wiki.samerhijazi.net - User contributions [en]

IT-SDK-Git

2021-09-03T13:06:34Z

Fiducia: /* Taging */

=Resource=
* https://help.github.com/en/github/using-git
* https://www.atlassian.com/git/tutorials/setting-up-a-repository
* https://fedoraproject.org/wiki/Git_quick_reference
* https://www.git-tower.com/learn/git/ebook/en/command-line/advanced-topics/merge-conflicts
* https://hackernoon.com/understanding-git-index-4821a0765cf
* https://docs.gitlab.com/ee/topics/git/numerous_undo_possibilities_in_git/
* Git-Branching-Game: https://learngitbranching.js.org/
* https://www.toptal.com/software/trunk-based-development-git-flow
* Cheat-Sheet: https://github.github.com/training-kit/downloads/de/github-git-cheat-sheet/
* Cheat-Sheet: https://www.atlassian.com/git/tutorials/atlassian-git-cheatsheet
* https://www.gitignore.io
* JGit: https://www.vogella.com/tutorials/JGit/article.html
* JGit-Cookbook: https://github.com/centic9/jgit-cookbook/

=Setting=
==ssh==
<pre class="code">
type %userprofile%\.ssh\id_rsa.pub | clip
cat %userprofile%\.ssh\id_rsa.pub | clip
</pre>
<pre class="code">
ssh -T git@github.com
ssh -T git@bitbucket.org
git remote set-url origin git@github.com:username/your-repository.git
</pre>

==Config==
<pre class="code">
git config --list
git config --global --edit
...
git config --global http.proxy $PROXY_URL
git config --global https.proxy $PROXY_URL
...
git config --global user.name "Samer Hijazi"
git config --global user.email "samer.hijazi@samerhijazi.net"
...
git config --global core.autocrlf true # Working on Windows, Linux, macOS Maschines.
git config --global core.autocrlf false # Working just Windows Machine.
git config --global core.longpaths true
...
git config --global core.editor "'C:/Program Files/Notepad++/notepad++.exe' -multiInst -notabbar -nosession -noPlugin"
...
git config --global diff.tool bc
git config --global difftool.bc.path "C:/Program Files/Beyond Compare 4/bcomp.exe"
...
git config --global merge.tool bc
git config --global mergetool.bc.path "C:/Program Files/Beyond Compare 4/bcomp.exe"
...
git config --global alias.s status
git config --global alias.cp '!git commit -a -m "Update" && git push'
...
git config --global advice.addIgnoredFile false # Turen off advice for adding Ignored files
...
git commit --amend --reset-author
</pre>
<pre class="code">
# https://mattferderer.com/fix-git-self-signed-certificate-in-certificate-chain-on-windows
git config --global http.sslVerify false
</pre>

==Credential==
* default: no cache at all
* cache: keeps credentials in memory for a certain period of time.
* store: saves the credentials to a plain-text file on disk.
* Mac-Chain: in Mac caches credentials in the secure keychain "osxkeychain".
* Windows-Chain: in Windows caches credentials in the secure keychain.
<pre class="code">
git config --global credential.helper unset ...........................# remove stored password
git config --global credential.helper store ...........................# save entered password
git config --global credential.helper cache
git config --global credential.helper 'store --file ~/.my-credentials'
git config --global credential.helper manager
git config --global credential.helper wincred
git config --global --edit
...
git credential-manager version
</pre>

=Life Cycle=
* All-in-One
* Initial
* create files & folders & branches
* del files & folders & braches
* merge branches
* revert changes

==All-in-One==
<pre class="code">
git clone https://github.com/samerhijazi/automation.git -b branchname ./local-folder
git pull
git add README.md
git commit -m "First commit"
git push -u origin master
</pre>
==Initialisieren==
<pre class="code">
git init --bare # Initial Repo for remote
git init # Initial Repo for local
...
git remote add origin https://samerhijazi@gitlab.com/samerhijazi/public.git
</pre>
==Clone==
<pre class="code">
git clone https://github.com/samerhijazi/automation.git -b branchname ./local-folder
git clone ssh://ssh-w0000000@servername.com/www/htdocs/w0000000/repository/git/projectname.git
</pre>
==Checkout==
* HEAD reflects 'git checkout'
<pre class="code">
git checkout main # checkout main-Branch@HEAD
git checkout main^ # moves HEAD 1-commit back from main-Branch
git checkout main~4 # moves HEAD 4-commits back from main-Branch
git branch -f main HEAD~3 # moves (by force) the main-Branch 3-commits back from HEAD.
</pre>

==Branch==
* Checkout
<pre class="code">
git branch -a # list all branches
git branch -r # list all updated branches
...
git checkout <exiting-branch> # checkout exiting branch
git checkout -b <new-branch> # create a new branch from HEAD and then checkout <new-branch>
git checkout -b <new-branch> <existing-branch> # create a new branch from <existing-branch> and then checkout <new-branch>
git push --set-upstream origin <new-branch> # Push the current branch and set the remote as upstream

</pre>
* Rename
<pre class="code">
git branch -m <old-branch> <new-branch> # To rename a local branch
git push origin -u <new-branch> :<old-branch> # To rename a remote branch
</pre>
* Delete
<pre class="code">
git branch -d <branch_to_delete> # Delete a branch local
git push origin --delete <branch_to_delete> # Delete a branch remote
</pre>

==Merge==
<pre class="code">
git checkout <branch_merge_to> # change to branch where the merge will be done
git merge --no-ff <branch_merge_from> # merge <branch_merge_from> in <branch_merge_to>
git push
...
git merge --abort # returen to the state before starting the merge.
git reset --hard # roll back to the commit before the merge.
</pre>
==Taging==
<pre class="code">
git tag -a v2021.09.03 -m "Update Version" # Annotated Tags
git push origin --tags # Sharing Tags
git tag -d $(git tag -l) # Delete All local tags. (Optional Recommended)
git fetch # Fetch remote All tags. (Optional Recommended)
git push origin --delete $(git tag -l) # Delete All remote tags. Pushing once should be faster than multiple times
git tag -d $(git tag -l) # Delete All local tags.
</pre>

==Remove & Rename==
<pre class="code">
git checkout <branch-name>
git rm -r <file-to-remove> # remove file
git mv <filename-old> <filename-new> # rename file
git clean -fd # remove directories forced
git commit -m "My Massage"
git push origin <branch-name>
</pre>

==Reverse (Reset & Revert)==
<pre class="code">
git stash # Save all local changes und remove them from workspace.
git fetch # fetch from the default remote, origin
------------------------------------------------------------------------------------------
git reset HEAD~1 # Moves branch reference 1-commit back.
git reset * # Undo "git add *"
git reset --hard origin/master # Reset your current branch (master) to origin's master
------------------------------------------------------------------------------------------
git revert HEAD # Undo last commit and make ready for remote.
------------------------------------------------------------------------------------------
git clean -f -ni # Remove untracked files; n: dry-run; i: interacktive.
git clean -f # Remove untracked files.
git clean -f -d # Remove untracked files and directories.
git clean -f -x # Remove ignored and non-ignored files.
git clean -f -X # Remove ignored files only.
</pre>

==Remote==
<pre class="code">
git remote -v # View existing remotes
git remote rename origin destination # Change remote name from 'origin' to 'destination'
---
git remote prune origin --dry-run
git remote prune origin
</pre>
==Fetch & Pull & Push==
<pre class="code">
git fetch # Download new data (commits, files, and refs.) from a remote-repository into local-repository.
git fetch --prune # Remove remote branches that not longer have a counterpart.
---
git pull # Download new data (commits, files, and refs.) from a remote-repository into local-repository and integrate the new data in working-files.
git pull --rebase origin master # get changes from remote master. And commit it for local/user commit.
---
git push # Upload local-repository content to a remote-repository.
git push --force-with-lease # To avoid overwrite history from rebase, Lease entsure that history dokumented.
</pre>

=Git branching model=
* src: http://blog.plasticscm.com/2017/04/how-we-do-trunk-based-development.html
* src: https://cloud.google.com/solutions/devops/devops-tech-trunk-based-development
* src: https://medium.com/safetycultureengineering/trunks-are-not-just-for-trees-from-git-flow-to-trunk-based-development-949d580697ef
* src: https://trunkbaseddevelopment.com/
* src: https://nvie.com/posts/a-successful-git-branching-model/
* src: https://medium.com/@patrickporto/4-branching-workflows-for-git-30d0aaee7bf
* src: https://guides.github.com/introduction/flow/index.html
* src: https://www.youtube.com/watch?v=1SXpE08hvGs
* Hauptbraches: master & develop
* Arbeitbraches: feature, release, hotfixes
==Branch Feature==
<pre class="code">
git checkout -b myfeature develop
...
git checkout develop
git merge --no-ff myfeature
git branch -d myfeature
...
git push origin develop
</pre>
==Branch Release==
<pre class="code">
git checkout -b release-1.2 develop
git commit -a -m "Bumped version number to 1.2"
...
git checkout master
git merge --no-ff release-1.2
git tag -a 1.2
...
git checkout develop
git merge --no-ff release-1.2
git branch -d release-1.2
</pre>
==Branch HotFix==
<pre class="code">
git checkout -b hotfix-1.2.1 master
git commit -a -m "Bumped version number to 1.2.1"
...
git checkout master
git merge --no-ff hotfix-1.2.1
git tag -a 1.2.1
...
git checkout develop
git merge --no-ff hotfix-1.2.1
git branch -d hotfix-1.2.1
</pre>
==CICD==
<pre class="code">
git --no-pager show -s --format=\'%ae\' # Disaply email address last commit
git config user.name # Dispaly email address user
</pre>

IT-SDK-Git

2021-09-03T13:02:31Z

Fiducia: /* Taging */

=Resource=
* https://help.github.com/en/github/using-git
* https://www.atlassian.com/git/tutorials/setting-up-a-repository
* https://fedoraproject.org/wiki/Git_quick_reference
* https://www.git-tower.com/learn/git/ebook/en/command-line/advanced-topics/merge-conflicts
* https://hackernoon.com/understanding-git-index-4821a0765cf
* https://docs.gitlab.com/ee/topics/git/numerous_undo_possibilities_in_git/
* Git-Branching-Game: https://learngitbranching.js.org/
* https://www.toptal.com/software/trunk-based-development-git-flow
* Cheat-Sheet: https://github.github.com/training-kit/downloads/de/github-git-cheat-sheet/
* Cheat-Sheet: https://www.atlassian.com/git/tutorials/atlassian-git-cheatsheet
* https://www.gitignore.io
* JGit: https://www.vogella.com/tutorials/JGit/article.html
* JGit-Cookbook: https://github.com/centic9/jgit-cookbook/

=Setting=
==ssh==
<pre class="code">
type %userprofile%\.ssh\id_rsa.pub | clip
cat %userprofile%\.ssh\id_rsa.pub | clip
</pre>
<pre class="code">
ssh -T git@github.com
ssh -T git@bitbucket.org
git remote set-url origin git@github.com:username/your-repository.git
</pre>

==Config==
<pre class="code">
git config --list
git config --global --edit
...
git config --global http.proxy $PROXY_URL
git config --global https.proxy $PROXY_URL
...
git config --global user.name "Samer Hijazi"
git config --global user.email "samer.hijazi@samerhijazi.net"
...
git config --global core.autocrlf true # Working on Windows, Linux, macOS Maschines.
git config --global core.autocrlf false # Working just Windows Machine.
git config --global core.longpaths true
...
git config --global core.editor "'C:/Program Files/Notepad++/notepad++.exe' -multiInst -notabbar -nosession -noPlugin"
...
git config --global diff.tool bc
git config --global difftool.bc.path "C:/Program Files/Beyond Compare 4/bcomp.exe"
...
git config --global merge.tool bc
git config --global mergetool.bc.path "C:/Program Files/Beyond Compare 4/bcomp.exe"
...
git config --global alias.s status
git config --global alias.cp '!git commit -a -m "Update" && git push'
...
git config --global advice.addIgnoredFile false # Turen off advice for adding Ignored files
...
git commit --amend --reset-author
</pre>
<pre class="code">
# https://mattferderer.com/fix-git-self-signed-certificate-in-certificate-chain-on-windows
git config --global http.sslVerify false
</pre>

==Credential==
* default: no cache at all
* cache: keeps credentials in memory for a certain period of time.
* store: saves the credentials to a plain-text file on disk.
* Mac-Chain: in Mac caches credentials in the secure keychain "osxkeychain".
* Windows-Chain: in Windows caches credentials in the secure keychain.
<pre class="code">
git config --global credential.helper unset ...........................# remove stored password
git config --global credential.helper store ...........................# save entered password
git config --global credential.helper cache
git config --global credential.helper 'store --file ~/.my-credentials'
git config --global credential.helper manager
git config --global credential.helper wincred
git config --global --edit
...
git credential-manager version
</pre>

=Life Cycle=
* All-in-One
* Initial
* create files & folders & branches
* del files & folders & braches
* merge branches
* revert changes

==All-in-One==
<pre class="code">
git clone https://github.com/samerhijazi/automation.git -b branchname ./local-folder
git pull
git add README.md
git commit -m "First commit"
git push -u origin master
</pre>
==Initialisieren==
<pre class="code">
git init --bare # Initial Repo for remote
git init # Initial Repo for local
...
git remote add origin https://samerhijazi@gitlab.com/samerhijazi/public.git
</pre>
==Clone==
<pre class="code">
git clone https://github.com/samerhijazi/automation.git -b branchname ./local-folder
git clone ssh://ssh-w0000000@servername.com/www/htdocs/w0000000/repository/git/projectname.git
</pre>
==Checkout==
* HEAD reflects 'git checkout'
<pre class="code">
git checkout main # checkout main-Branch@HEAD
git checkout main^ # moves HEAD 1-commit back from main-Branch
git checkout main~4 # moves HEAD 4-commits back from main-Branch
git branch -f main HEAD~3 # moves (by force) the main-Branch 3-commits back from HEAD.
</pre>

==Branch==
* Checkout
<pre class="code">
git branch -a # list all branches
git branch -r # list all updated branches
...
git checkout <exiting-branch> # checkout exiting branch
git checkout -b <new-branch> # create a new branch from HEAD and then checkout <new-branch>
git checkout -b <new-branch> <existing-branch> # create a new branch from <existing-branch> and then checkout <new-branch>
git push --set-upstream origin <new-branch> # Push the current branch and set the remote as upstream

</pre>
* Rename
<pre class="code">
git branch -m <old-branch> <new-branch> # To rename a local branch
git push origin -u <new-branch> :<old-branch> # To rename a remote branch
</pre>
* Delete
<pre class="code">
git branch -d <branch_to_delete> # Delete a branch local
git push origin --delete <branch_to_delete> # Delete a branch remote
</pre>

==Merge==
<pre class="code">
git checkout <branch_merge_to> # change to branch where the merge will be done
git merge --no-ff <branch_merge_from> # merge <branch_merge_from> in <branch_merge_to>
git push
...
git merge --abort # returen to the state before starting the merge.
git reset --hard # roll back to the commit before the merge.
</pre>
==Taging==
<pre class="code">
git tag -a v2021.09.03 -m "Update Version" # Annotated Tags
$ git push origin --tags # Sharing Tags
git tag -d $(git tag -l) # Delete All local tags. (Optional Recommended)
git fetch # Fetch remote All tags. (Optional Recommended)
git push origin --delete $(git tag -l) # Delete All remote tags. Pushing once should be faster than multiple times
git tag -d $(git tag -l) # Delete All local tags.
</pre>

==Remove & Rename==
<pre class="code">
git checkout <branch-name>
git rm -r <file-to-remove> # remove file
git mv <filename-old> <filename-new> # rename file
git clean -fd # remove directories forced
git commit -m "My Massage"
git push origin <branch-name>
</pre>

==Reverse (Reset & Revert)==
<pre class="code">
git stash # Save all local changes und remove them from workspace.
git fetch # fetch from the default remote, origin
------------------------------------------------------------------------------------------
git reset HEAD~1 # Moves branch reference 1-commit back.
git reset * # Undo "git add *"
git reset --hard origin/master # Reset your current branch (master) to origin's master
------------------------------------------------------------------------------------------
git revert HEAD # Undo last commit and make ready for remote.
------------------------------------------------------------------------------------------
git clean -f -ni # Remove untracked files; n: dry-run; i: interacktive.
git clean -f # Remove untracked files.
git clean -f -d # Remove untracked files and directories.
git clean -f -x # Remove ignored and non-ignored files.
git clean -f -X # Remove ignored files only.
</pre>

==Remote==
<pre class="code">
git remote -v # View existing remotes
git remote rename origin destination # Change remote name from 'origin' to 'destination'
---
git remote prune origin --dry-run
git remote prune origin
</pre>
==Fetch & Pull & Push==
<pre class="code">
git fetch # Download new data (commits, files, and refs.) from a remote-repository into local-repository.
git fetch --prune # Remove remote branches that not longer have a counterpart.
---
git pull # Download new data (commits, files, and refs.) from a remote-repository into local-repository and integrate the new data in working-files.
git pull --rebase origin master # get changes from remote master. And commit it for local/user commit.
---
git push # Upload local-repository content to a remote-repository.
git push --force-with-lease # To avoid overwrite history from rebase, Lease entsure that history dokumented.
</pre>

=Git branching model=
* src: http://blog.plasticscm.com/2017/04/how-we-do-trunk-based-development.html
* src: https://cloud.google.com/solutions/devops/devops-tech-trunk-based-development
* src: https://medium.com/safetycultureengineering/trunks-are-not-just-for-trees-from-git-flow-to-trunk-based-development-949d580697ef
* src: https://trunkbaseddevelopment.com/
* src: https://nvie.com/posts/a-successful-git-branching-model/
* src: https://medium.com/@patrickporto/4-branching-workflows-for-git-30d0aaee7bf
* src: https://guides.github.com/introduction/flow/index.html
* src: https://www.youtube.com/watch?v=1SXpE08hvGs
* Hauptbraches: master & develop
* Arbeitbraches: feature, release, hotfixes
==Branch Feature==
<pre class="code">
git checkout -b myfeature develop
...
git checkout develop
git merge --no-ff myfeature
git branch -d myfeature
...
git push origin develop
</pre>
==Branch Release==
<pre class="code">
git checkout -b release-1.2 develop
git commit -a -m "Bumped version number to 1.2"
...
git checkout master
git merge --no-ff release-1.2
git tag -a 1.2
...
git checkout develop
git merge --no-ff release-1.2
git branch -d release-1.2
</pre>
==Branch HotFix==
<pre class="code">
git checkout -b hotfix-1.2.1 master
git commit -a -m "Bumped version number to 1.2.1"
...
git checkout master
git merge --no-ff hotfix-1.2.1
git tag -a 1.2.1
...
git checkout develop
git merge --no-ff hotfix-1.2.1
git branch -d hotfix-1.2.1
</pre>
==CICD==
<pre class="code">
git --no-pager show -s --format=\'%ae\' # Disaply email address last commit
git config user.name # Dispaly email address user
</pre>

IT-SDK-API

2021-08-31T08:55:32Z

Fiducia: /* Tools */

=Ref=
* https://jsonplaceholder.typicode.com/
* https://www.chaijs.com/api/bdd/
* https://learning.postman.com/
* https://postman-quick-reference-guide.readthedocs.io/en/latest/index.html
* https://postman-quick-reference-guide.readthedocs.io/en/latest/assertions.html#how-find-object-in-array-by-property-value
* https://www.youtube.com/playlist?list=PLM-7VG-sgbtAgGq_pef5y_ruIUBPpUgNJ

=Tools=
* wizdler@Chrome: https://chrome.google.com/webstore/detail/wizdler/oebpmncolmhiapingjaagmapififiakb
* wizdler@Firefox: https://addons.mozilla.org/en-US/firefox/addon/wizdler/

=Mix-Settings=
* Postman Local-Storage: %AppData%\Postman\IndexedDB

IT-SDK-Ansible

2021-08-24T07:34:57Z

Fiducia: /* Ref. */

=Ref.=
*https://www.youtube.com/watch?v=1id6ERvfozo
*https://docs.ansible.com/ansible/latest/collections/ansible/builtin/index.html
*https://www.redhat.com/en/services/training/do007-ansible-essentials-simplicity-automation-technical-overview

=Notes=
* Ansible: playbooks, roles, variables, basic modules
=Commands=
<pre class="code">
ansible $PATTERN -m $MODULE -a "$MODULE_OPTIONS" ## AD_HOC
...
ansible -m command -a "ls" all
...
ansible-playbook playbook.yml ## execute the playbook
ansible-playbook playbook.yml --connection=local
</pre>

=Inventory=
* Lists which hosts will receive commands from the control host.
* Location for the inventory file: /etc/ansible/hosts
<pre class="code">
ansible all --list-hosts
nano inventory
------------------------------
[webservers]
192.0.2.0
192.0.2.1
[databases]
192.0.2.3 ansible_user=root
------------------------------
</pre>

=Playbook=
<pre class="code">
- name: this playbook will install httpd ## Name of the Play
hosts: web ## In which Host shall the play executed.
vars: ## Definition von Variables
pkgname: httpd
tasks: ## Tasks in this play
- name: Install latest of Apache ## Name of the Task
become: ture ## Execute this Task as "sudo dnf install httpd"
become_user: weblogic ## Exceute this task as "sudo -u weblogic dnf install httpd"
dnf: ## Name of the Modul used (etc. command, apt, user, service )
name: {{ pkgname }} ## Parameter used form modul
state: latest ## Parameter used form modul
</pre>

=Playbook-Localhost=
<pre class="code">
ansible-playbook playbook.yml --connection=local
--------------------------
- hosts: 127.0.0.1
connection: local
-------------------------
- hosts: localhost
connection: local
</pre>

IT-SDK-Kubernetes-Basics

2021-08-13T10:18:51Z

Fiducia: /* Bedeutung */

=Ref.=
* https://kind.sigs.k8s.io/
* http://kubernetesbyexample.com/
* https://kubernetes.io/docs/reference/kubectl/cheatsheet/

=Infrastructure=
==Vagrant==
* create File "Vagrant"
<pre class="code">
# -*- mode: ruby -*-
# vi: set ft=ruby :
IMAGE_NAME = "ubuntu/focal64"

Vagrant.configure("2") do |config|
config.vm.provider "virtualbox" do |vb|
vb.gui = false
vb.cpus = 2
vb.memory = 4096
end
config.vm.define "k8s-master" do |master|
master.vm.box = IMAGE_NAME
master.vm.hostname = "k8s-master"
master.vm.network "public_network", bridge: "br0", mac: "0800272657FA", ip: "192.168.178.80"
end
config.vm.define "k8s-node01" do |node01|
node01.vm.box = IMAGE_NAME
node01.vm.hostname = "k8s-node01"
node01.vm.network "public_network", bridge: "br0", mac: "0800272657FB", ip: "192.168.178.81"
end
end
</pre>

==Ansible==
* Installation with '''Vagrant''': https://kubernetes.io/blog/2019/03/15/kubernetes-setup-using-ansible-and-vagrant/
* Create File "Playbook.yaml"
<pre class="code">
---
- hosts: all
become: true
tasks:
- name: Install packages that allow apt to be used over HTTPS
apt:
name: "{{ packages }}"
state: present
update_cache: yes
vars:
packages:
- apt-transport-https
- ca-certificates
- curl
- gnupg-agent
- software-properties-common

- name: Add an apt signing key for Docker
apt_key:
url: https://download.docker.com/linux/ubuntu/gpg
state: present

- name: Add apt repository for stable version
apt_repository:
repo: deb [arch=amd64] https://download.docker.com/linux/ubuntu xenial stable
state: present

- name: Install docker and its dependecies
apt:
name: "{{ packages }}"
state: present
update_cache: yes
vars:
packages:
- docker-ce
- docker-ce-cli
- containerd.io
notify:
- docker status

- name: Add vagrant user to docker group
user:
name: vagrant
group: docker

- name: Remove swapfile from /etc/fstab
mount:
name: "{{ item }}"
fstype: swap
state: absent
with_items:
- swap
- none

- name: Disable swap
command: swapoff -a
when: ansible_swaptotal_mb > 0

- name: Add an apt signing key for Kubernetes
apt_key:
url: https://packages.cloud.google.com/apt/doc/apt-key.gpg
state: present

- name: Adding apt repository for Kubernetes
apt_repository:
repo: deb https://apt.kubernetes.io/ kubernetes-xenial main
state: present
filename: kubernetes.list

- name: Install Kubernetes binaries
apt:
name: "{{ packages }}"
state: present
update_cache: yes
vars:
packages:
- kubelet
- kubeadm
- kubectl

- name: Configure node ip
lineinfile:
path: /etc/default/kubelet
line: KUBELET_EXTRA_ARGS=--node-ip={{ node_ip }}

- name: Restart kubelet
service:
name: kubelet
daemon_reload: yes
state: restarted

- name: Initialize the Kubernetes cluster using kubeadm
command: kubeadm init --apiserver-advertise-address="192.168.50.10" --apiserver-cert-extra-sans="192.168.50.10" --node-name k8s-master --pod-network-cidr=192.168.0.0/16

- name: Setup kubeconfig for vagrant user
command: "{{ item }}"
with_items:
- mkdir -p /home/vagrant/.kube
- cp -i /etc/kubernetes/admin.conf /home/vagrant/.kube/config
- chown vagrant:vagrant /home/vagrant/.kube/config

- name: Install calico pod network
become: false
command: kubectl create -f https://docs.projectcalico.org/v3.4/getting-started/kubernetes/installation/hosted/calico.yaml

- name: Generate join command
command: kubeadm token create --print-join-command
register: join_command

- name: Copy join command to local file
local_action: copy content="{{ join_command.stdout_lines[0] }}" dest="./join-command"

handlers:
- name: docker status
service: name=docker state=started
</pre>

=Installation=
==Cluster==
<pre class="code">
swapoff -a
sudo apt-get update
sudo apt-get install docker.io
...
sudo sh -c "echo 'deb http://apt.kubernetes.io/ kubernetes-xenial main' >> /etc/apt/sources.list.d/kubernetes.list"
sudo sh -c "curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -"
...
sudo apt-get update
sudo apt-get install kubeadm=1.20.1-00 kubelet=1.20.1-00 kubectl=1.20.1-00
sudo apt-mark hold kubelet kubeadm kubectl
...
sudo sh -c "echo '192.168.178.80 k8s-master' >> /etc/hosts"
nano kubeadm-config.yaml
---------------------------
apiVersion: kubeadm.k8s.io/v1beta2
kind: ClusterConfiguration
kubernetesVersion: 1.20.1
controlPlaneEndpoint: "k8s-master:6443"
networking:
podSubnet: 192.168.0.0/16
---------------------------
sudo kubeadm init --config=kubeadm-config.yaml --upload-certs | tee kubeadm-init.out
...
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
...
kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
kubectl get node
</pre>

==Worker==
<pre class="code">
sudo apt-get update
sudo apt-get install docker.io
...
sudo sh -c "echo 'deb http://apt.kubernetes.io/ kubernetes-xenial main' >> /etc/apt/sources.list.d/kubernetes.list"
sudo sh -c "curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -"
...
sudo apt-get update
sudo apt-get install kubeadm=1.20.1-00 kubelet=1.20.1-00 kubectl=1.20.1-00
sudo apt-mark hold kubelet kubeadm kubectl
...
sudo sh -c "echo '192.168.178.80 k8s-master' >> /etc/hosts"
sudo sh -c "echo '192.168.178.80 k8s-node01' >> /etc/hosts"
...
sudo kubeadm token list
sudo kubeadm token create
openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'
...
kubeadm join k8s-master:6443 \
--token bmv8x8.xpcw9pg0lzs98cey \
--discovery-token-ca-cert-hash sha256:7a7cb2068572629ab3461c9c2282e22281915487fb41789477cb5c01aefd3b98
</pre>

==Updating==
<pre class="code">
sudo apt-cache madison kubeadm
sudo kubeadm version
kubectl get node
...
sudo apt-mark unhold kubeadm
sudo apt-get install kubeadm=1.21.1-00
sudo apt-mark hold kubeadm
...
kubectl drain k8s-master --ignore-daemonsets # Drain node in preparation for maintenance
...
sudo kubeadm upgrade plan # check the existing cluster and then update the software.
sudo kubeadm upgrade apply v1.21.1
...
sudo apt-mark unhold kubelet kubectl
sudo apt-get install kubelet=1.21.1-00 kubectl=1.21.1-00
sudo apt-mark hold kubelet kubectl
...
sudo systemctl daemon-reload
sudo systemctl restart kubelet
...
kubectl uncordon k8s-master # Mark node as schedulable.
</pre>

=Settings=
<pre class="code">
kubectl describe node | grep -i taint
kubectl taint nodes --all node-role.kubernetes.io/master-
kubectl -n kube-system describe secret default
</pre>

=DryRun=
<pre class="code">
kubectl config use-context kubernetes-admin@kubernetes
...
kubectl create deployment nginx --image=nginx --replicas=2
kubectl expose deployment nginx --type=LoadBalancer
...
kubectl create job hello --image=busybox -- echo "Hello World"
kubectl create cronjob hello --image=busybox --schedule="*/1 * * * *" -- echo "Hello World"
...
kubectl run --image=nginx -o yaml --dry-run=client > pod-defination.yaml
kubectl create deployment --image=nginx --replicas=3 -o yaml --dry-run=client > deployment-defination.yaml
</pre>

=ServiceTypes=
*ref: https://kubernetes.io/docs/concepts/services-networking/service/
*'''ClusterIP''': Service is reachableonly from within the cluster.
*'''NodePort''': Service is reachable from outside the cluster.
*'''LoadBalancer''': Service is reachable from outside the cluster (Using a cloud provider's load balancer).
*'''ExternalName''': t.b.d.

=Probes=
* ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
==Bedeutung==
* '''Probe''': describes a health check to be performed against a '''container''' to determine whether it is alive or ready to receive traffic.
* '''Liveness''': to know when to restart a container.
* '''Readiness''': to know when a container is ready to start accepting traffic.
* '''Startup''': to know when a container application has started. If such a probe is configured, it disables liveness and readiness checks until it succeeds.

==Settings==

* '''initialDelaySeconds''': wait x seconds before performing the first probe.
* '''periodSeconds''': every x seconds to perform probe.
* '''timeoutSeconds''': wait x seconds after which the probe times out.
* '''successThreshold''': x times to considered successful after having failed (Defaults=1).
* '''failureThreshold''': x times to giving up after fails (Defaults=3). Giving up in case of liveness probe means restarting the container.

=kind=
* https://kind.sigs.k8s.io/docs/user/quick-start/#installation
<pre class="code">
curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.11.1/kind-linux-amd64
curl -Lo kind.exe https://kind.sigs.k8s.io/dl/v0.11.1/kind-windows-amd64
</pre>
<pre class="code">
kind create cluster
kind create cluster --name kind-2
kind get clusters
kind delete cluster
...
kubectl cluster-info --context kind-kind
</pre>

=minikube=
* https://minikube.sigs.k8s.io/docs/
<pre class="code">
minikube start
minikube dashboard
minikube stop #Halt the cluster:
minikube config set memory 16384 #Set memory limit
minikube addons list #Browse the catalog
minikube start -p aged --kubernetes-version=v1.16.1 #Create a second cluster
minikube delete --all #Delete all of the minikube
</pre>

IT-SDK-101

2021-08-06T12:24:03Z

Fiducia: /* Service Mesh */

https://www.jetbrains.com/idea/features/editions_comparison_matrix.html
=IDE=
* https://vscodium.com/
* https://code.visualstudio.com/docs/remote/containers
* "C:\Program Files\Oracle\SQL-Developer\sqldeveloper\bin\sqldeveloper64W.exe" --AddVMOption=-Duser.language=en

=Languages=
* Java
* Groovy
* Kotlin
* Scala
* Python and Jython
* Dart
* Rust (https://doc.rust-lang.org/book/title-page.html)
* HTML, XML, JSON, YAML
* XSL, XPath
* Markdown
* JavaScript, TypeScript
* CoffeeScript, ActionScript
* SQL
* CSS, Sass, SCSS, Less, Stylus
* Ruby and JRuby
* PHP
* Go

=Build Tools=
* Maven
* Gradle
* Ant
* sbt, Bloop, Fury
* npm
* Webpack
* Gulp, Grunt

=Frameworks=
* Android
* Swing
* JavaFX
* Spring (Spring MVC, Spring Boot, Spring Integration, Spring Security)
* Spring Cloud
* Java EE (JSF, JAX-RS, CDI, JPA, etc)
* Micronaut, Quarkus, Helidon
* Grails
* GWT
* Play
* Thymeleaf, Freemarker, Velocity
* AspectJ, JBoss Seam, OSGI
* Akka, SSP, Play2
* React, React Native
* Angular, AngularJS
* Node.js
* Vue.js
* Apache Flex, Adobe AIR
* Ruby on Rails
* Django, Flask, Pyramid
* Drupal, Wordpress, Laravel, Symfony
* Quarkus

=Service Mesh=
>> Service Mesh: is dedicated infrastructure layer for facilitating service-to-service communications between services or microservices, using a proxy.
* Istio
* Linkerd
* Consul
=Monitoring=
* Fluentd (Collect Data from Cluster and Transport them to Other Tools)
* Elasticsearch
* mongoDB
* kafka

=Mix-Tools=
* erf: https://openapi-generator.tech/

IT-SDK-DevOps

2021-08-06T11:20:52Z

Fiducia: /* Prometheus */

[[File:BG 01.jpg|thumb]]
=To Read=
* https://www.atlassian.com/devops/devops-tools
* https://www.atlassian.com/continuous-delivery
* https://www.atlassian.com/continuous-delivery/continuous-integration/trunk-based-development
* https://www.atlassian.com/continuous-delivery/software-testing/types-of-software-testing
* https://www.atlassian.com/git/tutorials/comparing-workflows/gitflow-workflow
* https://guides.github.com/introduction/flow/
* https://nvie.com/posts/a-successful-git-branching-model/

=Books=
* https://azure.microsoft.com/de-de/resources/effective-devops/
* https://trunkbaseddevelopment.com/
* https://paulhammant.com/2013/04/05/what-is-trunk-based-development/
* https://continuousdelivery.com/
* https://lenses.io/careers/devops/
* Continuous Deployment with Spinnaker: https://www.spinnaker.io/
=Prometheus=
* PromQL
* https://www.youtube.com/watch?v=h4Sl21AKiDg (How Prometheus Monitoring works | Prometheus Architecture explained)
* https://www.youtube.com/watch?v=QoDqxm7ybLc (Setup Prometheus Monitoring on Kubernetes using Helm and Prometheus Operator | Part 1)
* https://www.youtube.com/watch?v=mLPg49b33sA (Prometheus Monitoring - Steps to monitor third-party apps using Prometheus Exporter | Part 2)
=Elasticsearch=
* https://www.youtube.com/watch?v=I5c8Pfg2tys (Logging in Kubernetes with Elasticsearch, Fluentd and Kibana | Complete Course Overview)
* https://www.youtube.com/watch?v=5ofsNyHZwWE (How Fluentd simplifies collecting and consuming logs | Fluentd simply explained)

IT-SDK-DevOps

2021-08-06T11:17:43Z

Fiducia:

IT-SDK-101

2021-08-06T09:52:43Z

Fiducia: /* Mix-Tools */

https://www.jetbrains.com/idea/features/editions_comparison_matrix.html
=IDE=
* https://vscodium.com/
* https://code.visualstudio.com/docs/remote/containers
* "C:\Program Files\Oracle\SQL-Developer\sqldeveloper\bin\sqldeveloper64W.exe" --AddVMOption=-Duser.language=en

=Languages=
* Java
* Groovy
* Kotlin
* Scala
* Python and Jython
* Dart
* Rust (https://doc.rust-lang.org/book/title-page.html)
* HTML, XML, JSON, YAML
* XSL, XPath
* Markdown
* JavaScript, TypeScript
* CoffeeScript, ActionScript
* SQL
* CSS, Sass, SCSS, Less, Stylus
* Ruby and JRuby
* PHP
* Go

=Build Tools=
* Maven
* Gradle
* Ant
* sbt, Bloop, Fury
* npm
* Webpack
* Gulp, Grunt

=Frameworks=
* Android
* Swing
* JavaFX
* Spring (Spring MVC, Spring Boot, Spring Integration, Spring Security)
* Spring Cloud
* Java EE (JSF, JAX-RS, CDI, JPA, etc)
* Micronaut, Quarkus, Helidon
* Grails
* GWT
* Play
* Thymeleaf, Freemarker, Velocity
* AspectJ, JBoss Seam, OSGI
* Akka, SSP, Play2
* React, React Native
* Angular, AngularJS
* Node.js
* Vue.js
* Apache Flex, Adobe AIR
* Ruby on Rails
* Django, Flask, Pyramid
* Drupal, Wordpress, Laravel, Symfony
* Quarkus

=Service Mesh=
# Service Mesh: is dedicated infrastructure layer for facilitating service-to-service communications between services or microservices, using a proxy.
*Istio
* Linkerd
*Consul
=Mix-Tools=
* erf: https://openapi-generator.tech/

IT-SDK-101

2021-08-06T09:50:03Z

Fiducia: /* Frameworks */

Temp

2021-08-03T14:34:30Z

Fiducia:

* https://mirror.openshift.com/pub/openshift-v4/clients/helm/latest/
* http://buergschaftserklaerung.com/
* https://www.dynatrace.com/news/blog/a-guide-to-event-driven-sre-inspired-devops/
* cspd.gov.jo

Hewlett Packard (HP)
HP 241i
E242
E272
s340c
EIZO
EV2336
EV2402
EV2411
EV436
EV2455
EV2750
Dell
P3418
P3415
C3422WE
U2719D
Philips
346P1CRH
Icy Box IB-DK4050-CPD
LEN P15v

IT-SDK-Java

2021-07-29T09:08:41Z

Fiducia: /* Setting */

=Links=
* Books: https://www.manning.com/
* Tutorial: https://www.javatpoint.com/java-tutorial
* Tutorial: https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/object-oriented-programming
* Tutorial: https://www.tutorialspoint.com/design_pattern/index.htm
* Tutorial: https://howtodoinjava.com/
* Patterns: https://en.wikipedia.org/wiki/Facade_pattern
* Patterns: https://www.baeldung.com/java-core-structural-patterns
* https://www.jrebel.com/blog/what-is-jrebel
* Hibernate: http://hibernate.org/

=Setting=
* JAVA_HOME=C:\sdk\Java\jdk_1.8.0_65
* JDK_HOME=%JAVA_HOME%
* JRE_HOME=C:\sdk\Java\jre_1.8.0_65
* Windows: PATH=%JAVA_HOME%/bin
* Linux: PATH=$JAVA_HOME/bin:$PATH

=Maven=
* ref: https://maven.apache.org/guides/mini/guide-multiple-repositories.html
<pre class="code">
wget https://www-us.apache.org/dist/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz
sudo tar xzf apache-maven-3.6.3-bin.tar.gz
sudo ln -s apache-maven-3.6.3 maven
sudo vi /etc/profile.d/maven.sh
-------------------------------------
export MAVEN_HOME=/opt/maven
export PATH=${MAVEN_HOME}/bin:${PATH}
-------------------------------------
source /etc/profile.d/maven.sh
mvn -version
</pre>

=Code-Collections=
<pre class="code">
import java.util.concurrent.TimeUnit;
---------------------------------------------
try {
TimeUnit.SECONDS.sleep(secondsToSleep);
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
}
---------------------------------------------
</pre>
<pre class="code">
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import io.agroal.api.AgroalDataSource;

public class SettingDatabase{

AgroalDataSource dataSource;
String db = "jdbc:db2://localhost:5245/DATABASE:user=db2;password=db2;";
String sql = "SELECT * FROM users";

public void init_DriverManager()throws SQLException{
try{
Connection connection = DriverManager.getConnection(db); //Connection connection = AgroalDataSource.getConnection(db);
PreparedStatement ps = connection.prepareStatement(sql);
ResultSet rs = ps.executeQuery();
}
}
}
</pre>

=Architekture=
==Database==
* '''JDBC''' is a low level standard for interaction with databases. '''JPA''' is higher level standard for the same purpose.
* '''JDBC''' allows you to do more things with the Database directly. '''JPA''' allows you to use an object model in your application.
* Datasource & Pooling ('''JDBC''') >> '''Agroal'''
* Datasource & Pooling ('''Reactive''') >> '''Vert.x'''
* '''Agroal''' is a datasource connection pool implementation with integration with transaction, security and other systems.
* '''Agroal''' library allows the definition of '''java.sql.DataSource''' with connection pooling.
* '''JPA''' (Java Persistence API) & '''Hibernate ORM''' (Object-relational mapping). JPA is only a specification. Hibernate is an implementation of JPA.
--------------------------------------
* '''JDBC''': https://quarkus.io/guides/datasource
* '''Reactive''': https://quarkus.io/guides/reactive-sql-clients
* '''Oracle''': https://blogs.oracle.com/developers/configuring-the-oracle-jdbc-drivers-with-quarkus

==RESTFul==
* '''RESTEasy''' is an implementation of '''JAX-RS''' and it is used to implement '''RestFul-services'''.
* Microservices communicating either synchronously via '''REST''' or asynchronously using '''Kafka'''.
---------------
* https://quarkus.io/guides/rest-json
* https://quarkus.io/guides/rest-client
* https://quarkus.io/guides/resteasy-reactive
* https://lankydan.dev/building-a-rest-api-with-quarkus
* https://dzone.com/articles/building-a-rest-api-with-quarkus

=Sprin Boot=
* https://www.baeldung.com/spring-boot-start

IT-SDK-SRE

2021-07-26T22:46:10Z

Fiducia: /* SRE Toolchain */

=Ref=
* https://sre.google/books/
* https://www.dynatrace.com/news/tag/sre/
* https://video.dynatrace.com/watch/UDw5uqrt1xSigePvtceqAf?
* https://www.dynatrace.com/trial/resources/
* https://www.youtube.com/playlist?list=PLqt2rd0eew1arEMzMM_tCZzF0JwgANaFt
* https://www.dynatrace.com/support/help/how-to-use-dynatrace/

=Notes=
*SRE focuses on improving software system reliability across key categories including availability, performance, latency, efficiency, capacity, and incident response.
*service-level indicators (SLIs) and service-level objectives (SLOs)
*Uptime: "five nines" or 99.999%, over five minutes of downtime per year.
*Uptime: "four nines" or 99.99%, nearly an hour of downtime per year.
*Dynatrace is both an Application Performance Monitoring and application Management tool, it can be used as Cloud based SaaS offering or installed on-prem and more.
=SRE Toolchain=
* https://www.dynatrace.com/news/blog/sre-vs-devops/

=Containers for Microservices=
* Docker
* Kubernetes
* Swarm
* Apache Mesos
* Podman
=Source Control Tools=
* Git
=CI/CD Tools=
* Jenkins
* CircleCI
* GitLab
* GoCD
* Semaphore
* Concourse

=Data Storage Tools=
* MySQL
* PostgreSQL
* MonogoDB
* Apache Hadoop
* Apache Hive
* Amazon Aurora (MySQL and PostgreSQL-compatible)
* MariaDB (fork from MySQL)

=Configuration Management Tools=
* Ansible
* Chef
* Puppet
* Saltstack
=Monitoring and Observability Tools=
==Metrics Collection Tools==
* Prometheus
* Stackdriver (Google Cloud Operations)
* InfluxDB
* Sensu Go
==Log Aggregation Tools==
* Fluentd
* Sentry
* Logstash
==Distributed Tracing Tools==
* OpenTelemetry
* Jaeger
==Application Performance Monitoring Tools==
* Appdynamics
* New Relic
* Dynatrace
=Dashboarding Tools=
* Grafana
* Stashboard
* Redash
* Metabase
=Incident Management=
* Pagerduty
* Opsgenie
* Squadcast
=NEW-Work=
* AWS, Azure, concourse, Jenkins, Aurora DB, Dynatrace, New Relic, ElasticSearch, Kibana

=Notes=
* APM: application performance management
* ELK Stack: is the acronym for three open source projects: Elasticsearch, Logstash, and Kibana
* ELK Stack/Elastic & New Relic & Datadog & Dynatrace
* Prometheus, Graylog, StoreBox
* concourse-ci: https://concourse-ci.org/
* Terraform and Ansible
* Azure, Terraform, Ansible, concourse-ci, Elasticsearch/Kibana und Dynatrace.
* https://www.youtube.com/watch?v=X9r0sjBWdlA
* https://www.dynatrace.com/news/blog/openstack-monitoring-beyond-the-elastic-stack-part-2/
=Dynatrace=
* https://www.dynatrace.com/support/help/

IT-SDK-SRE

2021-07-26T08:34:24Z

Fiducia: /* Ref */

=Ref=
* https://sre.google/books/
* https://www.dynatrace.com/news/tag/sre/
* https://video.dynatrace.com/watch/UDw5uqrt1xSigePvtceqAf?
* https://www.dynatrace.com/trial/resources/
* https://www.youtube.com/playlist?list=PLqt2rd0eew1arEMzMM_tCZzF0JwgANaFt
* https://www.dynatrace.com/support/help/how-to-use-dynatrace/

=SRE Toolchain=
* https://www.dynatrace.com/news/blog/sre-vs-devops/
=Containers for Microservices=
* Docker
* Kubernetes
* Swarm
* Apache Mesos
* Podman
=Source Control Tools=
* Git
=CI/CD Tools=
* Jenkins
* CircleCI
* GitLab
* GoCD
* Semaphore
* Concourse

=Data Storage Tools=
* MySQL
* PostgreSQL
* MonogoDB
* Apache Hadoop
* Apache Hive
* Amazon Aurora (MySQL and PostgreSQL-compatible)
* MariaDB (fork from MySQL)

=Configuration Management Tools=
* Ansible
* Chef
* Puppet
* Saltstack
=Monitoring and Observability Tools=
==Metrics Collection Tools==
* Prometheus
* Stackdriver (Google Cloud Operations)
* InfluxDB
* Sensu Go
==Log Aggregation Tools==
* Fluentd
* Sentry
* Logstash
==Distributed Tracing Tools==
* OpenTelemetry
* Jaeger
==Application Performance Monitoring Tools==
* Appdynamics
* New Relic
* Dynatrace
=Dashboarding Tools=
* Grafana
* Stashboard
* Redash
* Metabase
=Incident Management=
* Pagerduty
* Opsgenie
* Squadcast
=NEW-Work=
* AWS, Azure, concourse, Jenkins, Aurora DB, Dynatrace, New Relic, ElasticSearch, Kibana

=Notes=
* APM: application performance management
* ELK Stack: is the acronym for three open source projects: Elasticsearch, Logstash, and Kibana
* ELK Stack/Elastic & New Relic & Datadog & Dynatrace
* Prometheus, Graylog, StoreBox
* concourse-ci: https://concourse-ci.org/
* Terraform and Ansible
* Azure, Terraform, Ansible, concourse-ci, Elasticsearch/Kibana und Dynatrace.
* https://www.youtube.com/watch?v=X9r0sjBWdlA
* https://www.dynatrace.com/news/blog/openstack-monitoring-beyond-the-elastic-stack-part-2/
=Dynatrace=
* https://www.dynatrace.com/support/help/

IT-SDK-SRE

2021-07-24T12:38:40Z

Fiducia: /* Ref */

=Ref=
* https://www.dynatrace.com/news/tag/sre/
* https://video.dynatrace.com/watch/UDw5uqrt1xSigePvtceqAf?
* https://www.dynatrace.com/trial/resources/
* https://www.youtube.com/playlist?list=PLqt2rd0eew1arEMzMM_tCZzF0JwgANaFt
* https://www.dynatrace.com/support/help/how-to-use-dynatrace/

=SRE Toolchain=
* https://www.dynatrace.com/news/blog/sre-vs-devops/
=Containers for Microservices=
* Docker
* Kubernetes
* Swarm
* Apache Mesos
* Podman
=Source Control Tools=
* Git
=CI/CD Tools=
* Jenkins
* CircleCI
* GitLab
* GoCD
* Semaphore
* Concourse

=Data Storage Tools=
* MySQL
* PostgreSQL
* MonogoDB
* Apache Hadoop
* Apache Hive
* Amazon Aurora (MySQL and PostgreSQL-compatible)
* MariaDB (fork from MySQL)

=Configuration Management Tools=
* Ansible
* Chef
* Puppet
* Saltstack
=Monitoring and Observability Tools=
==Metrics Collection Tools==
* Prometheus
* Stackdriver (Google Cloud Operations)
* InfluxDB
* Sensu Go
==Log Aggregation Tools==
* Fluentd
* Sentry
* Logstash
==Distributed Tracing Tools==
* OpenTelemetry
* Jaeger
==Application Performance Monitoring Tools==
* Appdynamics
* New Relic
* Dynatrace
=Dashboarding Tools=
* Grafana
* Stashboard
* Redash
* Metabase
=Incident Management=
* Pagerduty
* Opsgenie
* Squadcast
=NEW-Work=
* AWS, Azure, concourse, Jenkins, Aurora DB, Dynatrace, New Relic, ElasticSearch, Kibana

=Notes=
* APM: application performance management
* ELK Stack: is the acronym for three open source projects: Elasticsearch, Logstash, and Kibana
* ELK Stack/Elastic & New Relic & Datadog & Dynatrace
* Prometheus, Graylog, StoreBox
* concourse-ci: https://concourse-ci.org/
* Terraform and Ansible
* Azure, Terraform, Ansible, concourse-ci, Elasticsearch/Kibana und Dynatrace.
* https://www.youtube.com/watch?v=X9r0sjBWdlA
* https://www.dynatrace.com/news/blog/openstack-monitoring-beyond-the-elastic-stack-part-2/
=Dynatrace=
* https://www.dynatrace.com/support/help/

IT-SDK-SRE

2021-07-24T12:17:48Z

Fiducia: /* Ref */

=Ref=
* https://www.dynatrace.com/news/tag/sre/
* https://video.dynatrace.com/watch/UDw5uqrt1xSigePvtceqAf?

=SRE Toolchain=
* https://www.dynatrace.com/news/blog/sre-vs-devops/
=Containers for Microservices=
* Docker
* Kubernetes
* Swarm
* Apache Mesos
* Podman
=Source Control Tools=
* Git
=CI/CD Tools=
* Jenkins
* CircleCI
* GitLab
* GoCD
* Semaphore
* Concourse

=Data Storage Tools=
* MySQL
* PostgreSQL
* MonogoDB
* Apache Hadoop
* Apache Hive
* Amazon Aurora (MySQL and PostgreSQL-compatible)
* MariaDB (fork from MySQL)

=Configuration Management Tools=
* Ansible
* Chef
* Puppet
* Saltstack
=Monitoring and Observability Tools=
==Metrics Collection Tools==
* Prometheus
* Stackdriver (Google Cloud Operations)
* InfluxDB
* Sensu Go
==Log Aggregation Tools==
* Fluentd
* Sentry
* Logstash
==Distributed Tracing Tools==
* OpenTelemetry
* Jaeger
==Application Performance Monitoring Tools==
* Appdynamics
* New Relic
* Dynatrace
=Dashboarding Tools=
* Grafana
* Stashboard
* Redash
* Metabase
=Incident Management=
* Pagerduty
* Opsgenie
* Squadcast
=NEW-Work=
* AWS, Azure, concourse, Jenkins, Aurora DB, Dynatrace, New Relic, ElasticSearch, Kibana

=Notes=
* APM: application performance management
* ELK Stack: is the acronym for three open source projects: Elasticsearch, Logstash, and Kibana
* ELK Stack/Elastic & New Relic & Datadog & Dynatrace
* Prometheus, Graylog, StoreBox
* concourse-ci: https://concourse-ci.org/
* Terraform and Ansible
* Azure, Terraform, Ansible, concourse-ci, Elasticsearch/Kibana und Dynatrace.
* https://www.youtube.com/watch?v=X9r0sjBWdlA
* https://www.dynatrace.com/news/blog/openstack-monitoring-beyond-the-elastic-stack-part-2/
=Dynatrace=
* https://www.dynatrace.com/support/help/

IT-SDK-SRE

2021-07-24T12:15:49Z

Fiducia:

=Ref=
* https://www.dynatrace.com/news/tag/sre/
=SRE Toolchain=
* https://www.dynatrace.com/news/blog/sre-vs-devops/
=Containers for Microservices=
* Docker
* Kubernetes
* Swarm
* Apache Mesos
* Podman
=Source Control Tools=
* Git
=CI/CD Tools=
* Jenkins
* CircleCI
* GitLab
* GoCD
* Semaphore
* Concourse

=Data Storage Tools=
* MySQL
* PostgreSQL
* MonogoDB
* Apache Hadoop
* Apache Hive
* Amazon Aurora (MySQL and PostgreSQL-compatible)
* MariaDB (fork from MySQL)

=Configuration Management Tools=
* Ansible
* Chef
* Puppet
* Saltstack
=Monitoring and Observability Tools=
==Metrics Collection Tools==
* Prometheus
* Stackdriver (Google Cloud Operations)
* InfluxDB
* Sensu Go
==Log Aggregation Tools==
* Fluentd
* Sentry
* Logstash
==Distributed Tracing Tools==
* OpenTelemetry
* Jaeger
==Application Performance Monitoring Tools==
* Appdynamics
* New Relic
* Dynatrace
=Dashboarding Tools=
* Grafana
* Stashboard
* Redash
* Metabase
=Incident Management=
* Pagerduty
* Opsgenie
* Squadcast
=NEW-Work=
* AWS, Azure, concourse, Jenkins, Aurora DB, Dynatrace, New Relic, ElasticSearch, Kibana

=Notes=
* APM: application performance management
* ELK Stack: is the acronym for three open source projects: Elasticsearch, Logstash, and Kibana
* ELK Stack/Elastic & New Relic & Datadog & Dynatrace
* Prometheus, Graylog, StoreBox
* concourse-ci: https://concourse-ci.org/
* Terraform and Ansible
* Azure, Terraform, Ansible, concourse-ci, Elasticsearch/Kibana und Dynatrace.
* https://www.youtube.com/watch?v=X9r0sjBWdlA
* https://www.dynatrace.com/news/blog/openstack-monitoring-beyond-the-elastic-stack-part-2/
=Dynatrace=
* https://www.dynatrace.com/support/help/

IT-SDK-SRE

2021-07-22T17:11:32Z

Fiducia:

SRE Toolchain
* https://www.dynatrace.com/news/blog/sre-vs-devops/

=Containers for Microservices=
* Docker
* Kubernetes
* Swarm
* Apache Mesos
* Podman
=Source Control Tools=
* Git
=CI/CD Tools=
* Jenkins
* CircleCI
* GitLab
* GoCD
* Semaphore
* Concourse

=Data Storage Tools=
* MySQL
* PostgreSQL
* MonogoDB
* Apache Hadoop
* Apache Hive
* Amazon Aurora (MySQL and PostgreSQL-compatible)
* MariaDB (fork from MySQL)

=Configuration Management Tools=
* Ansible
* Chef
* Puppet
* Saltstack
=Monitoring and Observability Tools=
==Metrics Collection Tools==
* Prometheus
* Stackdriver (Google Cloud Operations)
* InfluxDB
* Sensu Go
==Log Aggregation Tools==
* Fluentd
* Sentry
* Logstash
==Distributed Tracing Tools==
* OpenTelemetry
* Jaeger
==Application Performance Monitoring Tools==
* Appdynamics
* New Relic
* Dynatrace
=Dashboarding Tools=
* Grafana
* Stashboard
* Redash
* Metabase
=Incident Management=
* Pagerduty
* Opsgenie
* Squadcast
=NEW-Work=
* AWS, Azure, concourse, Jenkins, Aurora DB, Dynatrace, New Relic, ElasticSearch, Kibana

=Notes=
* APM: application performance management
* ELK Stack: is the acronym for three open source projects: Elasticsearch, Logstash, and Kibana
* ELK Stack/Elastic & New Relic & Datadog & Dynatrace
* Prometheus, Graylog, StoreBox
* concourse-ci: https://concourse-ci.org/
* Terraform and Ansible
* Azure, Terraform, Ansible, concourse-ci, Elasticsearch/Kibana und Dynatrace.
* https://www.youtube.com/watch?v=X9r0sjBWdlA
* https://www.dynatrace.com/news/blog/openstack-monitoring-beyond-the-elastic-stack-part-2/
=Dynatrace=
* https://www.dynatrace.com/support/help/

Temp

2021-07-22T11:52:33Z

Fiducia:

* https://mirror.openshift.com/pub/openshift-v4/clients/helm/latest/
* http://buergschaftserklaerung.com/
* https://www.dynatrace.com/news/blog/a-guide-to-event-driven-sre-inspired-devops/

Hewlett Packard (HP)
HP 241i
E242
E272
s340c
EIZO
EV2336
EV2402
EV2411
EV436
EV2455
EV2750
Dell
P3418
P3415
C3422WE
U2719D
Philips
346P1CRH
Icy Box IB-DK4050-CPD
LEN P15v

Temp

2021-07-21T17:48:19Z

Fiducia:

* https://mirror.openshift.com/pub/openshift-v4/clients/helm/latest/
* http://buergschaftserklaerung.com/

Hewlett Packard (HP)
HP 241i
E242
E272
s340c
EIZO
EV2336
EV2402
EV2411
EV436
EV2455
EV2750
Dell
P3418
P3415
C3422WE
U2719D
Philips
346P1CRH
Icy Box IB-DK4050-CPD
LEN P15v

IT-SDK-Openshift

2021-07-20T07:47:46Z

Fiducia: /* Ref */

==Ref==
* Main-Source: https://docs.openshift.com/container-platform/3.11/welcome/index.html
* CI/CD 1: https://www.youtube.com/watch?v=65BnTLcDAJI
* CI/CD 2: https://www.youtube.com/watch?v=wSFyg6Etwx8
* OKD (OpenShift): https://www.youtube.com/watch?v=ZkFIozGY0IA
* https://hcs-company.com/blog/containers/a-short-comparison-of-openshift-and-cloud-foundry
* Das freie Angebot der Openshift https://learn.openshift.com/
* Das freie Angebot der Kube-Academy https://kube.academy/
* Das freie Angebot "Getting started"-Reihe auf https://container.training/
* https://cri-o.io/
* https://cookbook.openshift.org/
* https://www.okd.io/minishift/
* https://learn.openshift.com/
* https://kube.academy/

==Workshop==
* OpenShift-Starter-Guides: https://redhat-scholars.github.io/openshift-starter-guides/rhs-openshift-starter-guides/4.6/index.html
* http://dn.dev/openshift-workshop
* https://github.com/redhat-developer-demos/hybrid-cloud/
* https://github.com/openshift-roadshow/
* https://get-cluster-devcluster-stage.apps.member.crt-stage.com/

=Infrasturcure=
==MiniShift==
* https://docs.okd.io/3.11/minishift/command-ref/minishift_start.html
==CMD==
<pre class="code">
oc new-app <docker-image> --name <name>
oc new-app <image-stream> --name <name>
oc import-image <docker-image> --confirm

oc login -u dev -p dev
oc new-project myproject
oc status
oc new-app --search katalonstudio/katalon
oc new-app katalonstudio/katalon --name kat
oc expose service/katalon
oc get route/katalon
oc get imagestream -o name

oc get all -o name
oc get all -o name
oc describe route/katalon
oc describe imagestream/katalon
oc get all --selector app=katalon -o name
oc delete all --selector app=katalon
</pre>

=y=
*
<pre class="code">
oc new-build --name qshift --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
oc start-build --from-dir . qshift
oc new-app --image-stream airhacks/qshift --name qshift
</pre>

==Introducing Red Hat OpenShift 4==
* Part 1: https://www.redhat.com/en/events/webinar/introduction-kubernetes
** https://onlinexperiences.com/Launch/Event/ShowKey=66363
* Part 2: https://www.redhat.com/en/events/webinar/automated-operations-across-unified-hybrid-cloud
** https://onlinexperiences.com/Launch/Event/ShowKey=66365
* Part 3: https://www.redhat.com/en/events/webinar/building-better-kubernetes-applications-operators-and-openshift
** https://onlinexperiences.com/Launch/Event/ShowKey=66367
==Kostenlose Kurse==
*Openshift: https://www.redhat.com/en/services/training/do080-deploying-containerized-applications-technical-overview
*Openshift: https://www.redhat.com/en/services/training/do092-developing-cloud-native-applications-microservices-architectures
==Free eBooks==
*OpenShift DL: https://assets.openshift.com/hubfs/pdfs/DevOps_with_OpenShift.pdf
*OpenShift DL: https://assets.openshift.com/hubfs/pdfs/Deploying_to_OpenShift.pdf
*OpenShift DL: https://assets.openshift.com/hubfs/pdfs/OpenShift_for_Developers_Red_Hat.pdf
*OpenShift eBook: https://www.openshift.com/deploying-to-openshift/
*OpenShift eBook: https://www.openshift.com/devops-with-openshift/
*OpenShift eBook: https://www.openshift.com/for-developers/

==Resource External==
*OpenShift Github: https://github.com/Cloudwerkstattpublic/openshift-links
*OpenShift Blog: https://blog.openshift.com/
*OpenShift YouTube-Channel: https://www.youtube.com/channel/UCZKMj3YI0wP-kq4QYpaKdEA
*OpenShift Lernumgebung: https://learn.openshift.com/ (über das Gäste-WLAN ist jedoch möglich)
*Docker online Reference: https://docs.docker.com/engine/reference/builder/
*Docker best Practices: https://docs.docker.com/v17.09/engine/userguide/eng-image/dockerfile_best-practices

Temp

2021-07-19T15:04:20Z

Fiducia: Created page with "* https://mirror.openshift.com/pub/openshift-v4/clients/helm/latest/ * http://buergschaftserklaerung.com/"

* https://mirror.openshift.com/pub/openshift-v4/clients/helm/latest/
* http://buergschaftserklaerung.com/

IT-SDK-Kubernetes-Basics

2021-07-19T10:01:32Z

Fiducia: /* kind */

=Ref.=
* https://kind.sigs.k8s.io/
* http://kubernetesbyexample.com/
* https://kubernetes.io/docs/reference/kubectl/cheatsheet/

=Fast-Run=
<pre class="code">
kubectl run --image=nginx -o yaml --dry-run=client > pod-defination.yaml
kubectl create deployment --image=nginx --replicas=3 -o yaml --dry-run=client > deployment-defination.yaml
</pre>

=ServiceTypes=
*ref: https://kubernetes.io/docs/concepts/services-networking/service/
*'''ClusterIP''': Service is reachableonly from within the cluster.
*'''NodePort''': Service is reachable from outside the cluster.
*'''LoadBalancer''': Service is reachable from outside the cluster (Using a cloud provider's load balancer).
*'''ExternalName''': t.b.d.

=Probes=
* ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
==Bedeutung==
* '''Probe''': describes a health check to be performed against a container to determine whether it is alive or ready to receive traffic.
* '''Liveness''': to know when to restart a container.
* '''Readiness''': to know when a container is ready to start accepting traffic.
* '''Startup''': to know when a container application has started. If such a probe is configured, it disables liveness and readiness checks until it succeeds.
==Settings==

* '''initialDelaySeconds''': wait x seconds before performing the first probe.
* '''periodSeconds''': every x seconds to perform probe.
* '''timeoutSeconds''': wait x seconds after which the probe times out.
* '''successThreshold''': x times to considered successful after having failed (Defaults=1).
* '''failureThreshold''': x times to giving up after fails (Defaults=3). Giving up in case of liveness probe means restarting the container.

=kind=
* https://kind.sigs.k8s.io/docs/user/quick-start/#installation
<pre class="code">
curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.11.1/kind-linux-amd64
curl -Lo kind.exe https://kind.sigs.k8s.io/dl/v0.11.1/kind-windows-amd64
</pre>
<pre class="code">
kind create cluster
kind create cluster --name kind-2
kind get clusters
kind delete cluster
...
kubectl cluster-info --context kind-kind
</pre>

=minikube=
* https://minikube.sigs.k8s.io/docs/
<pre class="code">
minikube start
minikube dashboard
minikube stop #Halt the cluster:
minikube config set memory 16384 #Set memory limit
minikube addons list #Browse the catalog
minikube start -p aged --kubernetes-version=v1.16.1 #Create a second cluster
minikube delete --all #Delete all of the minikube
</pre>

IT-SDK-Kubernetes-Basics

2021-07-17T10:52:44Z

Fiducia: /* , and Probes */

=Ref.=
* https://kind.sigs.k8s.io/
* http://kubernetesbyexample.com/
* https://kubernetes.io/docs/reference/kubectl/cheatsheet/
=Probes=
* ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
==Bedeutung==
* '''Probe''': describes a health check to be performed against a container to determine whether it is alive or ready to receive traffic.
* '''Liveness''': to know when to restart a container.
* '''Readiness''': to know when a container is ready to start accepting traffic.
* '''Startup''': to know when a container application has started. If such a probe is configured, it disables liveness and readiness checks until it succeeds.
==Settings==

* '''initialDelaySeconds''': wait x seconds before performing the first probe.
* '''periodSeconds''': every x seconds to perform probe.
* '''timeoutSeconds''': wait x seconds after which the probe times out.
* '''successThreshold''': x times to considered successful after having failed (Defaults=1).
* '''failureThreshold''': x times to giving up after fails (Defaults=3). Giving up in case of liveness probe means restarting the container.

=Source=
<pre class="code">
kubectl run --image=nginx -o yaml --dry-run=client > pod-defination.yaml
kubectl create deployment --image=nginx --replicas=3 -o yaml --dry-run=client > deployment-defination.yaml
</pre>

=minikube=
* https://minikube.sigs.k8s.io/docs/
<pre class="code">
minikube start
minikube dashboard
minikube stop #Halt the cluster:
minikube config set memory 16384 #Set memory limit
minikube addons list #Browse the catalog
minikube start -p aged --kubernetes-version=v1.16.1 #Create a second cluster
minikube delete --all #Delete all of the minikube
</pre>

IT-SDK-Kubernetes-Basics

2021-07-17T10:51:56Z

Fiducia: /* Liveness, Readiness and Startup Probes */

=Ref.=
* https://kind.sigs.k8s.io/
* http://kubernetesbyexample.com/
* https://kubernetes.io/docs/reference/kubectl/cheatsheet/
=, and Probes=
==Bedeutung==
* '''Probe''': describes a health check to be performed against a container to determine whether it is alive or ready to receive traffic.
* '''Liveness''': to know when to restart a container.
* '''Readiness''': to know when a container is ready to start accepting traffic.
* '''Startup''': to know when a container application has started. If such a probe is configured, it disables liveness and readiness checks until it succeeds.
==Settings==

* '''initialDelaySeconds''': wait x seconds before performing the first probe.
* '''periodSeconds''': every x seconds to perform probe.
* '''timeoutSeconds''': wait x seconds after which the probe times out.
* '''successThreshold''': x times to considered successful after having failed (Defaults=1).
* '''failureThreshold''': x times to giving up after fails (Defaults=3). Giving up in case of liveness probe means restarting the container.

=Source=
<pre class="code">
kubectl run --image=nginx -o yaml --dry-run=client > pod-defination.yaml
kubectl create deployment --image=nginx --replicas=3 -o yaml --dry-run=client > deployment-defination.yaml
</pre>

=minikube=
* https://minikube.sigs.k8s.io/docs/
<pre class="code">
minikube start
minikube dashboard
minikube stop #Halt the cluster:
minikube config set memory 16384 #Set memory limit
minikube addons list #Browse the catalog
minikube start -p aged --kubernetes-version=v1.16.1 #Create a second cluster
minikube delete --all #Delete all of the minikube
</pre>

IT-SDK-Kubernetes-Basics

2021-07-17T10:45:59Z

Fiducia: /* Source */

=Ref.=
* https://kind.sigs.k8s.io/
* http://kubernetesbyexample.com/
* https://kubernetes.io/docs/reference/kubectl/cheatsheet/
=Liveness, Readiness and Startup Probes=
* Probe: describes a health check to be performed against a container to determine whether it is alive or ready to receive traffic.
* initialDelaySeconds: wait x seconds before performing the first probe.
* periodSeconds: every x seconds to perform probe.
* timeoutSeconds: wait x seconds after which the probe times out.
* successThreshold: x times to considered successful after having failed (Defaults=1).
* failureThreshold: x times to giving up after fails (Defaults=3). Giving up in case of liveness probe means restarting the container.
=Source=
<pre class="code">
kubectl run --image=nginx -o yaml --dry-run=client > pod-defination.yaml
kubectl create deployment --image=nginx --replicas=3 -o yaml --dry-run=client > deployment-defination.yaml
</pre>

=minikube=
* https://minikube.sigs.k8s.io/docs/
<pre class="code">
minikube start
minikube dashboard
minikube stop #Halt the cluster:
minikube config set memory 16384 #Set memory limit
minikube addons list #Browse the catalog
minikube start -p aged --kubernetes-version=v1.16.1 #Create a second cluster
minikube delete --all #Delete all of the minikube
</pre>

IT-SDK-Vagrant

2021-07-15T16:24:55Z

Fiducia: /* Vagrantfile */

=Source=
* https://www.vagrantup.com/docs/vagrantfile/machine_settings.html
* https://www.oracle.com/technical-resources/articles/it-infrastructure/admin-manage-vbox-cli.html
=Preambel=
* Host: Base-Maschine; Guest: VM
* Networking: Bridged adapter; Host-Only Network; NAT

=Boxes=
* Base: hashicorp/precise32
* Ubuntu 14.04 LTS: ubuntu/trusty64
* Ubuntu 16.04 LTS: ubuntu/xenial64
* Ubuntu 18.04 LTS: ubuntu/bionic64
* Ubuntu 20.04 LTS: ubuntu/focal64

=Installation=
==VirtualBox==
<pre class="code">
sudo dnf install @c-development @d-development @virtualization
or
sudo dnf install gcc binutils make glibc-devel patch libgomp glibc-headers kernel-headers kernel-devel-`uname -r` dkms
sudo curl http://download.virtualbox.org/virtualbox/rpm/fedora/virtualbox.repo -o /etc/yum.repos.d/virtualbox.repo
...
sudo dnf search virtualbox
sudo dnf install VirtualBox-6.1
...
sudo usermod -a -G vboxusers $USER
sudo /usr/lib/virtualbox/vboxdrv.sh setup
...
vboxmanage setproperty machinefolder ~/box-vms
vboxmanage list systemproperties | grep folder
</pre>

==KVM==
* https://github.com/vagrant-libvirt/vagrant-libvirt#installation
<pre class="code">
sudo dnf install -y gcc make qemu-kvm libvirt virt-install libvirt-devel libxml2-devel ruby-devel libguestfs-tools
export CONFIGURE_ARGS="with-libvirt-include=/usr/include/libvirt with-libvirt-lib=/usr/lib64"
vagrant plugin install vagrant-libvirt
</pre>
==Vagrant==
<pre class="code">
$ sudo dnf install https://releases.hashicorp.com/vagrant/2.2.9/vagrant_2.2.9_x86_64.rpm
$ sudo dnf install vagrant
$ export VAGRANT_HOME=/path/to/vagrant
$ vagrant plugin install vagrant-hostmanager
$ vagrant plugin install vagrant-cachier
$ vagrant plugin install vagrant-vbguest
$ vagrant plugin install vagrant-disksize
</pre>

=Work-Cycle=
<pre class="code">
$ vagrant init hashicorp/bionic64
$ vagrant box add hashicorp/bionic64
$ vagrant up --provider=virtualbox
$ vagrant ssh
$ vagrant reload
</pre>

=Vagrantfile=
* src: https://www.vagrantup.com/docs/vagrantfile/
<pre class="code">
# -*- mode: ruby -*-
# vi: set ft=ruby :
N = 2
IMAGE_NAME = "bento/ubuntu-16.04"
ENV['VAGRANT_DEFAULT_PROVIDER'] = 'virtualbox'
ENV['VAGRANT_DEFAULT_PROVIDER'] = 'docker'
ENV["LC_ALL"] = "en_US.UTF-8"

Vagrant.configure("2") do |config|
config.vm.box = "ubuntu/zesty64"
config.vm.hostname = “openstack”
config.disksize.size = '50GB'
config.vm.synced_folder ".", "/vagrant"
# --------------------------------------------------------------------
config.vm.provider "virtualbox" do |vb|
vb.gui = false
vb.name = “OpenStack”
vb.memory = 2048
vb.cpus = 1
end
# --------------------------------------------------------------------
config.vm.network "public_network", bridge: "br0"
config.vm.network "public_network", ip: "192.168.178.201", :mac => “0800278A8081”
config.vm.network "private_network", ip: "192.168.33.10", :mac => “0800278A8081”, bridge: "lan01"
config.vm.network "forwarded_port", guest: 8080, host: 8080
# --------------------------------------------------------------------
config.vm.provision "shell", path: "script.sh"
config.vm.provision "shell", path: "source script.sh"
config.vm.provision "shell", inline: "echo hello", run: “always”
config.vm.provision "shell", inline: "route add default gw 192.168.0.1", run: "always" # Manually override the default router configuration
config.vm.provision "shell", run: "always" do |s|
s.inline = "echo hello"
end
config.vm.provision "ansible" do |ansible|
ansible.playbook = "/location/of/master-playbook.yml"
ansible.extra_vars = {node_ip: "192.168.50.10",}
end
# --------------------------------------------------------------------
(1..N).each do |i|
config.vm.define "node-#{i}" do |node|
node.vm.hostname = "node-#{i}"
end
end
# --------------------------------------------------------------------
end
</pre>

=Update H.D.D.=
<pre class="code">
VBoxManage clonehd "box-disk1.vmdk" "clone-disk1.vdi" --format vdi
VBoxManage modifyhd "clone-disk1.vdi" --resize 102400

VBoxManage showvminfo MASCHIN_ID | grep ".vmdk"
VBoxManage storageattach MASCHIN_ID --storagectl "SATA Controller" --port 0 --device 0 --type hdd --medium clone-disk1.vdi
</pre>

IT-OS-Config-Fedora

2021-07-15T15:23:14Z

Fiducia: /* Layout */

= Introduction =
* Get-Fedora: https://docs.fedoraproject.org/en-US/fedora/f32/release-notes/welcome/Hardware_Overview/
* Server-World: https://www.server-world.info/en/
* Fedy: https://github.com/rpmfusion-infra/fedy/tree/master/plugins
* https://developer.fedoraproject.org/

=Tweaks=
<pre class="code">
sudo hostnamectl status
sudo hostnamectl set-hostname --static "box-blue"
</pre>
<pre class="code">
sudo nano /etc/dnf/dnf.conf
---------------------------------
fastestmirror=true
deltarpm=true
---------------------------------
</pre>
<pre class="code">
gsettings set org.gnome.nautilus.preferences always-use-location-entry true
gsettings set org.gnome.desktop.peripherals.mouse natural-scroll false
gsettings set org.gnome.desktop.peripherals.touchpad natural-scroll false
</pre>

=Software Installation=
==Initial Repos==
<pre class="code">
sudo dnf grouplist --ids
sudo dnf install fedora-release-common # InBox F32
sudo dnf install fedora-release-workstation # InBox F32
sudo dnf install fedora-workstation-repositories # InBox F32
sudo dnf install @c-development @d-development @virtualization
sudo dnf install dnf-plugins-core
...
sudo dnf install git wget curl
sudo dnf install dkms kernel-devel elfutils-libelf-devel zlib-devel perl
sudo dnf install bash-completion
</pre>

==Desktops==
<pre class="code">
sudo dnf install @workstation-product-environment
sudo dnf install @gnome-desktop
sudo dnf install @pantheon-desktop
sudo dnf install @cinnamon-desktop
sudo dnf install @mate-desktop
sudo dnf install @kde-desktop
sudo dnf install @xfce-desktop
sudo dnf install @lxde-desktop
sudo dnf install @deepin-desktop
...
sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
sudo dnf install https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
</pre>

==Media codecs==
<pre class="code">
sudo dnf install \
lame \
ffmpeg \
gstreamer1-libav \
gstreamer1-plugin-openh264 \
gstreamer1-plugins-base \
gstreamer1-plugins-bad-free \
gstreamer1-plugins-bad-free-extras \
gstreamer1-plugins-bad-free-fluidsynth \
gstreamer1-plugins-bad-free-wildmidi \
gstreamer1-plugins-bad-free-zbar \
gstreamer1-plugins-bad-freeworld \
gstreamer1-plugins-good-qt \
gstreamer1-plugins-good-gtk \
gstreamer1-plugins-good-extras \
gstreamer1-plugins-ugly \
rpmfusion-free-obsolete-packages
</pre>

==Mix-Software==
<pre class="code">
sudo dnf install clamav # Antivirus for detecting trojans, viruses, malware.
sudo dnf install sysstat htop glances # Performance & Monitoring
sudo dnf install unrar p7zip p7zip-plugins # Archive-Tools
sudo dnf install gnome-tweak-tool # Tweaks
sudo dnf install gnome-extensions-app
sudo dnf install dconf-editor
sudo dnf install alacarte appeditor # Application-Editor
sudo dnf install geary # Email-Client
sudo dnf install vlc youtube-dl
sudo dnf install mediawriter
sudo dnf install steam
sudo dnf install i-nex
sudo dnf install grub-customizer
</pre>
<pre class="code">
sudo dnf install tlp tlp-rdw # Reduce Battery Usage
sudo systemctl enable tlp # Enable
sudo tlp-stat -b # To view the Battery informations and status
</pre>
<pre class="code">
https://extensions.gnome.org/extension/307/dash-to-dock/
https://extensions.gnome.org/extension/1160/dash-to-panel/
https://extensions.gnome.org/extension/1228/arc-menu/
https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/?src=search
https://github.com/balena-io/etcher
https://github.com/oguzhaninan/Stacer
</pre>

=Pantheon Desktop=
* src: https://github.com/decathorpe
* src: https://decathorpe.com/fedora-elementary-stable-status.html
* src: https://eos-techs.com/
==Install Desktop==
<pre class="code">
sudo dnf group install "Pantheon Desktop"
sudo dnf install pantheon-session-settings-overrides
...
sudo dnf install lightdm elementary-greeter light-locker
sudo systemctl disable gdm.service
sudo systemctl enable lightdm.service
sudo systemctl set-default graphical.target
</pre>

==Install Tweaks==
<pre class="code">
sudo dnf groupinstall "C Development Tools and Libraries"
sudo dnf install cmake granite-devel unzip switchboard-devel GConf2-devel polkit-devel vala
wget https://github.com/elementary-tweaks/elementary-tweaks/archive/master.zip -O elementary-tweaks-master.zip
unzip elementary-tweaks-master.zip
cd elementary-tweaks-master
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/usr ../
make
sudo make install
</pre>

=Budgie Desktop=
<pre class="code">
sudo dnf copr enable alunux/budgie-desktop-git
sudo dnf install budgie-desktop
sudo dnf install sddm
sudo systemctl disable gdm; sudo systemctl enable sddm
sudo dnf remove gnome-shell*
</pre>

=Settings=
==MC==
<pre class="code">
nano ~/.config/mc/ini
# skin=modarin256
# /usr/share/mc/skins/
</pre>
=Layout=
== Fonts ==
<pre class="code">
sudo dnf install open-sans-fonts
sudo dnf install google-roboto-fonts
sudo dnf install google-roboto-mono-fonts
sudo dnf install google-noto-sans-fonts
sudo dnf install msttcore-fonts-installer
sudo dnf install lpf-mscore-fonts lpf-cleartype-fonts
sudo fc-cache -f -v
</pre>
<pre class="code">
wget https://download.jetbrains.com/fonts/JetBrainsMono-1.0.0.zip
unzip JetBrainsMono-1.0.0.zip
mkdir -p ~/.fonts
sudo cp *otf *otc ~/.fonts
sudo cp *otf *otc /usr/share/fonts/opentype/noto
sudo fc-cache -f -v
</pre>
<pre class="code">
Roboto Regular (9) Default/Interface/Desktop font
Roboto Regular (10) Document font
Roboto Mono Regular (9) Monospace font
Roboto Medium (10) Window Title font
---------------------------------------
Text scaling factor: 1.0
Hinting: Full
Antialiasing: RGBA
RGBA Order: RGB
</pre>

== HiDPI ==
* src: https://wiki.archlinux.org/index.php/HiDPI
* src: https://winaero.com/blog/find-change-screen-dpi-linux/
<pre class="code">
xdpyinfo | grep -B 2 resolution
xrandr | grep -w connected
</pre>

= Theme =
* Source: https://github.com/nana-4/materia-theme
* Source: https://github.com/themix-project/oomox
* Source: http://www.ubuntubuzz.com/2019/03/ubuntus-yaru-theme-on-fedora.html
==Style==
<pre class="code">
FG: #D3D7CF
BG: #4B5162
</pre>
* https://github.com/linuxmint/mint-themes/blob/master/src/Mint-Y/gtk-3.0/gtk.css
* https://www.preining.info/blog/2020/03/de-uglify-gtk3-tabs-of-terminals/
* nano ~/.config/gtk-3.0/gtk.css
<pre class="code">
.nemo-window .places-treeview {
background-color: rgba(219, 219, 219, 0.15);
}
notebook tab {
min-height: 0;
padding-top: 3px;
padding-bottom: 3px;
}
notebook tab button {
min-height: 0;
min-width: 0;
padding: 2px;
margin-top: 2px;
margin-bottom: 2px;
}
notebook button {
min-height: 0;
min-width: 0;
padding: 2px;
}
notebook header button {}
</pre>

== Icons ==

=VNC=
* src: https://docs.fedoraproject.org/en-US/fedora/rawhide/system-administrators-guide/infrastructure-services/TigerVNC/
* src: https://www.server-world.info/en/note?os=Fedora_30&p=desktop&f=6
* src: https://www.tecmint.com/install-vnc-server-on-rhel-8/
<pre class="code">
# dnf -y install tigervnc-server
# firewall-cmd --add-service=vnc-server --permanent
# firewall-cmd --reload
# vncpasswd
# systemctl daemon-reload
# systemctl start vncserver@:1
# systemctl enable vncserver@:1
</pre>

=System-Upgrade=
* src: https://docs.fedoraproject.org/en-US/quick-docs/dnf-system-upgrade/
<pre class="code">
sudo dnf upgrade --refresh # 1. Update software and back up the system
sudo dnf install dnf-plugin-system-upgrade # 2. Install the DNF plugin
sudo dnf system-upgrade download --refresh --releasever=32 # 3. Start the update with DNF
sudo dnf system-upgrade reboot # 4. Reboot and upgrade
</pre>

IT-OS-Config-Fedora

2021-07-15T11:55:14Z

Fiducia: /* Style */

= Introduction =
* Get-Fedora: https://docs.fedoraproject.org/en-US/fedora/f32/release-notes/welcome/Hardware_Overview/
* Server-World: https://www.server-world.info/en/
* Fedy: https://github.com/rpmfusion-infra/fedy/tree/master/plugins
* https://developer.fedoraproject.org/

=Tweaks=
<pre class="code">
sudo hostnamectl status
sudo hostnamectl set-hostname --static "box-blue"
</pre>
<pre class="code">
sudo nano /etc/dnf/dnf.conf
---------------------------------
fastestmirror=true
deltarpm=true
---------------------------------
</pre>
<pre class="code">
gsettings set org.gnome.nautilus.preferences always-use-location-entry true
gsettings set org.gnome.desktop.peripherals.mouse natural-scroll false
gsettings set org.gnome.desktop.peripherals.touchpad natural-scroll false
</pre>

=Software Installation=
==Initial Repos==
<pre class="code">
sudo dnf grouplist --ids
sudo dnf install fedora-release-common # InBox F32
sudo dnf install fedora-release-workstation # InBox F32
sudo dnf install fedora-workstation-repositories # InBox F32
sudo dnf install @c-development @d-development @virtualization
sudo dnf install dnf-plugins-core
...
sudo dnf install git wget curl
sudo dnf install dkms kernel-devel elfutils-libelf-devel zlib-devel perl
sudo dnf install bash-completion
</pre>

==Desktops==
<pre class="code">
sudo dnf install @workstation-product-environment
sudo dnf install @gnome-desktop
sudo dnf install @pantheon-desktop
sudo dnf install @cinnamon-desktop
sudo dnf install @mate-desktop
sudo dnf install @kde-desktop
sudo dnf install @xfce-desktop
sudo dnf install @lxde-desktop
sudo dnf install @deepin-desktop
...
sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
sudo dnf install https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
</pre>

==Media codecs==
<pre class="code">
sudo dnf install \
lame \
ffmpeg \
gstreamer1-libav \
gstreamer1-plugin-openh264 \
gstreamer1-plugins-base \
gstreamer1-plugins-bad-free \
gstreamer1-plugins-bad-free-extras \
gstreamer1-plugins-bad-free-fluidsynth \
gstreamer1-plugins-bad-free-wildmidi \
gstreamer1-plugins-bad-free-zbar \
gstreamer1-plugins-bad-freeworld \
gstreamer1-plugins-good-qt \
gstreamer1-plugins-good-gtk \
gstreamer1-plugins-good-extras \
gstreamer1-plugins-ugly \
rpmfusion-free-obsolete-packages
</pre>

==Mix-Software==
<pre class="code">
sudo dnf install clamav # Antivirus for detecting trojans, viruses, malware.
sudo dnf install sysstat htop glances # Performance & Monitoring
sudo dnf install unrar p7zip p7zip-plugins # Archive-Tools
sudo dnf install gnome-tweak-tool # Tweaks
sudo dnf install gnome-extensions-app
sudo dnf install dconf-editor
sudo dnf install alacarte appeditor # Application-Editor
sudo dnf install geary # Email-Client
sudo dnf install vlc youtube-dl
sudo dnf install mediawriter
sudo dnf install steam
sudo dnf install i-nex
sudo dnf install grub-customizer
</pre>
<pre class="code">
sudo dnf install tlp tlp-rdw # Reduce Battery Usage
sudo systemctl enable tlp # Enable
sudo tlp-stat -b # To view the Battery informations and status
</pre>
<pre class="code">
https://extensions.gnome.org/extension/307/dash-to-dock/
https://extensions.gnome.org/extension/1160/dash-to-panel/
https://extensions.gnome.org/extension/1228/arc-menu/
https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/?src=search
https://github.com/balena-io/etcher
https://github.com/oguzhaninan/Stacer
</pre>

=Pantheon Desktop=
* src: https://github.com/decathorpe
* src: https://decathorpe.com/fedora-elementary-stable-status.html
* src: https://eos-techs.com/
==Install Desktop==
<pre class="code">
sudo dnf group install "Pantheon Desktop"
sudo dnf install pantheon-session-settings-overrides
...
sudo dnf install lightdm elementary-greeter light-locker
sudo systemctl disable gdm.service
sudo systemctl enable lightdm.service
sudo systemctl set-default graphical.target
</pre>

==Install Tweaks==
<pre class="code">
sudo dnf groupinstall "C Development Tools and Libraries"
sudo dnf install cmake granite-devel unzip switchboard-devel GConf2-devel polkit-devel vala
wget https://github.com/elementary-tweaks/elementary-tweaks/archive/master.zip -O elementary-tweaks-master.zip
unzip elementary-tweaks-master.zip
cd elementary-tweaks-master
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/usr ../
make
sudo make install
</pre>

=Budgie Desktop=
<pre class="code">
sudo dnf copr enable alunux/budgie-desktop-git
sudo dnf install budgie-desktop
sudo dnf install sddm
sudo systemctl disable gdm; sudo systemctl enable sddm
sudo dnf remove gnome-shell*
</pre>

=Layout=
== Fonts ==
<pre class="code">
sudo dnf install open-sans-fonts
sudo dnf install google-roboto-fonts
sudo dnf install google-roboto-mono-fonts
sudo dnf install google-noto-sans-fonts
sudo dnf install msttcore-fonts-installer
sudo dnf install lpf-mscore-fonts lpf-cleartype-fonts
sudo fc-cache -f -v
</pre>
<pre class="code">
wget https://download.jetbrains.com/fonts/JetBrainsMono-1.0.0.zip
unzip JetBrainsMono-1.0.0.zip
mkdir -p ~/.fonts
sudo cp *otf *otc ~/.fonts
sudo cp *otf *otc /usr/share/fonts/opentype/noto
sudo fc-cache -f -v
</pre>
<pre class="code">
Roboto Regular (9) Default/Interface/Desktop font
Roboto Regular (10) Document font
Roboto Mono Regular (9) Monospace font
Roboto Medium (10) Window Title font
---------------------------------------
Text scaling factor: 1.0
Hinting: Full
Antialiasing: RGBA
RGBA Order: RGB
</pre>

== HiDPI ==
* src: https://wiki.archlinux.org/index.php/HiDPI
* src: https://winaero.com/blog/find-change-screen-dpi-linux/
<pre class="code">
xdpyinfo | grep -B 2 resolution
xrandr | grep -w connected
</pre>

= Theme =
* Source: https://github.com/nana-4/materia-theme
* Source: https://github.com/themix-project/oomox
* Source: http://www.ubuntubuzz.com/2019/03/ubuntus-yaru-theme-on-fedora.html
==Style==
<pre class="code">
FG: #D3D7CF
BG: #4B5162
</pre>
* https://github.com/linuxmint/mint-themes/blob/master/src/Mint-Y/gtk-3.0/gtk.css
* https://www.preining.info/blog/2020/03/de-uglify-gtk3-tabs-of-terminals/
* nano ~/.config/gtk-3.0/gtk.css
<pre class="code">
.nemo-window .places-treeview {
background-color: rgba(219, 219, 219, 0.15);
}
notebook tab {
min-height: 0;
padding-top: 3px;
padding-bottom: 3px;
}
notebook tab button {
min-height: 0;
min-width: 0;
padding: 2px;
margin-top: 2px;
margin-bottom: 2px;
}
notebook button {
min-height: 0;
min-width: 0;
padding: 2px;
}
notebook header button {}
</pre>

== Icons ==

=VNC=
* src: https://docs.fedoraproject.org/en-US/fedora/rawhide/system-administrators-guide/infrastructure-services/TigerVNC/
* src: https://www.server-world.info/en/note?os=Fedora_30&p=desktop&f=6
* src: https://www.tecmint.com/install-vnc-server-on-rhel-8/
<pre class="code">
# dnf -y install tigervnc-server
# firewall-cmd --add-service=vnc-server --permanent
# firewall-cmd --reload
# vncpasswd
# systemctl daemon-reload
# systemctl start vncserver@:1
# systemctl enable vncserver@:1
</pre>

=System-Upgrade=
* src: https://docs.fedoraproject.org/en-US/quick-docs/dnf-system-upgrade/
<pre class="code">
sudo dnf upgrade --refresh # 1. Update software and back up the system
sudo dnf install dnf-plugin-system-upgrade # 2. Install the DNF plugin
sudo dnf system-upgrade download --refresh --releasever=32 # 3. Start the update with DNF
sudo dnf system-upgrade reboot # 4. Reboot and upgrade
</pre>

IT-OS-Config-Fedora

2021-07-15T11:47:12Z

Fiducia: /* Style */

= Introduction =
* Get-Fedora: https://docs.fedoraproject.org/en-US/fedora/f32/release-notes/welcome/Hardware_Overview/
* Server-World: https://www.server-world.info/en/
* Fedy: https://github.com/rpmfusion-infra/fedy/tree/master/plugins
* https://developer.fedoraproject.org/

=Tweaks=
<pre class="code">
sudo hostnamectl status
sudo hostnamectl set-hostname --static "box-blue"
</pre>
<pre class="code">
sudo nano /etc/dnf/dnf.conf
---------------------------------
fastestmirror=true
deltarpm=true
---------------------------------
</pre>
<pre class="code">
gsettings set org.gnome.nautilus.preferences always-use-location-entry true
gsettings set org.gnome.desktop.peripherals.mouse natural-scroll false
gsettings set org.gnome.desktop.peripherals.touchpad natural-scroll false
</pre>

=Software Installation=
==Initial Repos==
<pre class="code">
sudo dnf grouplist --ids
sudo dnf install fedora-release-common # InBox F32
sudo dnf install fedora-release-workstation # InBox F32
sudo dnf install fedora-workstation-repositories # InBox F32
sudo dnf install @c-development @d-development @virtualization
sudo dnf install dnf-plugins-core
...
sudo dnf install git wget curl
sudo dnf install dkms kernel-devel elfutils-libelf-devel zlib-devel perl
sudo dnf install bash-completion
</pre>

==Desktops==
<pre class="code">
sudo dnf install @workstation-product-environment
sudo dnf install @gnome-desktop
sudo dnf install @pantheon-desktop
sudo dnf install @cinnamon-desktop
sudo dnf install @mate-desktop
sudo dnf install @kde-desktop
sudo dnf install @xfce-desktop
sudo dnf install @lxde-desktop
sudo dnf install @deepin-desktop
...
sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
sudo dnf install https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
</pre>

==Media codecs==
<pre class="code">
sudo dnf install \
lame \
ffmpeg \
gstreamer1-libav \
gstreamer1-plugin-openh264 \
gstreamer1-plugins-base \
gstreamer1-plugins-bad-free \
gstreamer1-plugins-bad-free-extras \
gstreamer1-plugins-bad-free-fluidsynth \
gstreamer1-plugins-bad-free-wildmidi \
gstreamer1-plugins-bad-free-zbar \
gstreamer1-plugins-bad-freeworld \
gstreamer1-plugins-good-qt \
gstreamer1-plugins-good-gtk \
gstreamer1-plugins-good-extras \
gstreamer1-plugins-ugly \
rpmfusion-free-obsolete-packages
</pre>

==Mix-Software==
<pre class="code">
sudo dnf install clamav # Antivirus for detecting trojans, viruses, malware.
sudo dnf install sysstat htop glances # Performance & Monitoring
sudo dnf install unrar p7zip p7zip-plugins # Archive-Tools
sudo dnf install gnome-tweak-tool # Tweaks
sudo dnf install gnome-extensions-app
sudo dnf install dconf-editor
sudo dnf install alacarte appeditor # Application-Editor
sudo dnf install geary # Email-Client
sudo dnf install vlc youtube-dl
sudo dnf install mediawriter
sudo dnf install steam
sudo dnf install i-nex
sudo dnf install grub-customizer
</pre>
<pre class="code">
sudo dnf install tlp tlp-rdw # Reduce Battery Usage
sudo systemctl enable tlp # Enable
sudo tlp-stat -b # To view the Battery informations and status
</pre>
<pre class="code">
https://extensions.gnome.org/extension/307/dash-to-dock/
https://extensions.gnome.org/extension/1160/dash-to-panel/
https://extensions.gnome.org/extension/1228/arc-menu/
https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/?src=search
https://github.com/balena-io/etcher
https://github.com/oguzhaninan/Stacer
</pre>

=Pantheon Desktop=
* src: https://github.com/decathorpe
* src: https://decathorpe.com/fedora-elementary-stable-status.html
* src: https://eos-techs.com/
==Install Desktop==
<pre class="code">
sudo dnf group install "Pantheon Desktop"
sudo dnf install pantheon-session-settings-overrides
...
sudo dnf install lightdm elementary-greeter light-locker
sudo systemctl disable gdm.service
sudo systemctl enable lightdm.service
sudo systemctl set-default graphical.target
</pre>

==Install Tweaks==
<pre class="code">
sudo dnf groupinstall "C Development Tools and Libraries"
sudo dnf install cmake granite-devel unzip switchboard-devel GConf2-devel polkit-devel vala
wget https://github.com/elementary-tweaks/elementary-tweaks/archive/master.zip -O elementary-tweaks-master.zip
unzip elementary-tweaks-master.zip
cd elementary-tweaks-master
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/usr ../
make
sudo make install
</pre>

=Budgie Desktop=
<pre class="code">
sudo dnf copr enable alunux/budgie-desktop-git
sudo dnf install budgie-desktop
sudo dnf install sddm
sudo systemctl disable gdm; sudo systemctl enable sddm
sudo dnf remove gnome-shell*
</pre>

=Layout=
== Fonts ==
<pre class="code">
sudo dnf install open-sans-fonts
sudo dnf install google-roboto-fonts
sudo dnf install google-roboto-mono-fonts
sudo dnf install google-noto-sans-fonts
sudo dnf install msttcore-fonts-installer
sudo dnf install lpf-mscore-fonts lpf-cleartype-fonts
sudo fc-cache -f -v
</pre>
<pre class="code">
wget https://download.jetbrains.com/fonts/JetBrainsMono-1.0.0.zip
unzip JetBrainsMono-1.0.0.zip
mkdir -p ~/.fonts
sudo cp *otf *otc ~/.fonts
sudo cp *otf *otc /usr/share/fonts/opentype/noto
sudo fc-cache -f -v
</pre>
<pre class="code">
Roboto Regular (9) Default/Interface/Desktop font
Roboto Regular (10) Document font
Roboto Mono Regular (9) Monospace font
Roboto Medium (10) Window Title font
---------------------------------------
Text scaling factor: 1.0
Hinting: Full
Antialiasing: RGBA
RGBA Order: RGB
</pre>

== HiDPI ==
* src: https://wiki.archlinux.org/index.php/HiDPI
* src: https://winaero.com/blog/find-change-screen-dpi-linux/
<pre class="code">
xdpyinfo | grep -B 2 resolution
xrandr | grep -w connected
</pre>

= Theme =
* Source: https://github.com/nana-4/materia-theme
* Source: https://github.com/themix-project/oomox
* Source: http://www.ubuntubuzz.com/2019/03/ubuntus-yaru-theme-on-fedora.html
==Style==
<pre class="code">
FG: #D3D7CF
BG: #4B5162
</pre>
<pre class="code">
https://github.com/linuxmint/mint-themes/blob/master/src/Mint-Y/gtk-3.0/gtk.css
.nemo-window .places-treeview {
background-color: rgba(219, 219, 219, 0.15);
}
...
notebook tab {
min-height: 0;
padding-top: 3px;
padding-bottom: 3px;
}
notebook tab button {
min-height: 0;
min-width: 0;
padding: 2px;
margin-top: 2px;
margin-bottom: 2px;
}
notebook button {
min-height: 0;
min-width: 0;
padding: 2px;
}
notebook header button {}
</pre>

== Icons ==

=VNC=
* src: https://docs.fedoraproject.org/en-US/fedora/rawhide/system-administrators-guide/infrastructure-services/TigerVNC/
* src: https://www.server-world.info/en/note?os=Fedora_30&p=desktop&f=6
* src: https://www.tecmint.com/install-vnc-server-on-rhel-8/
<pre class="code">
# dnf -y install tigervnc-server
# firewall-cmd --add-service=vnc-server --permanent
# firewall-cmd --reload
# vncpasswd
# systemctl daemon-reload
# systemctl start vncserver@:1
# systemctl enable vncserver@:1
</pre>

=System-Upgrade=
* src: https://docs.fedoraproject.org/en-US/quick-docs/dnf-system-upgrade/
<pre class="code">
sudo dnf upgrade --refresh # 1. Update software and back up the system
sudo dnf install dnf-plugin-system-upgrade # 2. Install the DNF plugin
sudo dnf system-upgrade download --refresh --releasever=32 # 3. Start the update with DNF
sudo dnf system-upgrade reboot # 4. Reboot and upgrade
</pre>

IT-OS-Config-Fedora

2021-07-15T07:11:10Z

Fiducia: /* Desktops */

= Introduction =
* Get-Fedora: https://docs.fedoraproject.org/en-US/fedora/f32/release-notes/welcome/Hardware_Overview/
* Server-World: https://www.server-world.info/en/
* Fedy: https://github.com/rpmfusion-infra/fedy/tree/master/plugins
* https://developer.fedoraproject.org/

=Tweaks=
<pre class="code">
sudo hostnamectl status
sudo hostnamectl set-hostname --static "box-blue"
</pre>
<pre class="code">
sudo nano /etc/dnf/dnf.conf
---------------------------------
fastestmirror=true
deltarpm=true
---------------------------------
</pre>
<pre class="code">
gsettings set org.gnome.nautilus.preferences always-use-location-entry true
gsettings set org.gnome.desktop.peripherals.mouse natural-scroll false
gsettings set org.gnome.desktop.peripherals.touchpad natural-scroll false
</pre>

=Software Installation=
==Initial Repos==
<pre class="code">
sudo dnf grouplist --ids
sudo dnf install fedora-release-common # InBox F32
sudo dnf install fedora-release-workstation # InBox F32
sudo dnf install fedora-workstation-repositories # InBox F32
sudo dnf install @c-development @d-development @virtualization
sudo dnf install dnf-plugins-core
...
sudo dnf install git wget curl
sudo dnf install dkms kernel-devel elfutils-libelf-devel zlib-devel perl
sudo dnf install bash-completion
</pre>

==Desktops==
<pre class="code">
sudo dnf install @workstation-product-environment
sudo dnf install @gnome-desktop
sudo dnf install @pantheon-desktop
sudo dnf install @cinnamon-desktop
sudo dnf install @mate-desktop
sudo dnf install @kde-desktop
sudo dnf install @xfce-desktop
sudo dnf install @lxde-desktop
sudo dnf install @deepin-desktop
...
sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
sudo dnf install https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
</pre>

==Media codecs==
<pre class="code">
sudo dnf install \
lame \
ffmpeg \
gstreamer1-libav \
gstreamer1-plugin-openh264 \
gstreamer1-plugins-base \
gstreamer1-plugins-bad-free \
gstreamer1-plugins-bad-free-extras \
gstreamer1-plugins-bad-free-fluidsynth \
gstreamer1-plugins-bad-free-wildmidi \
gstreamer1-plugins-bad-free-zbar \
gstreamer1-plugins-bad-freeworld \
gstreamer1-plugins-good-qt \
gstreamer1-plugins-good-gtk \
gstreamer1-plugins-good-extras \
gstreamer1-plugins-ugly \
rpmfusion-free-obsolete-packages
</pre>

==Mix-Software==
<pre class="code">
sudo dnf install clamav # Antivirus for detecting trojans, viruses, malware.
sudo dnf install sysstat htop glances # Performance & Monitoring
sudo dnf install unrar p7zip p7zip-plugins # Archive-Tools
sudo dnf install gnome-tweak-tool # Tweaks
sudo dnf install gnome-extensions-app
sudo dnf install dconf-editor
sudo dnf install alacarte appeditor # Application-Editor
sudo dnf install geary # Email-Client
sudo dnf install vlc youtube-dl
sudo dnf install mediawriter
sudo dnf install steam
sudo dnf install i-nex
sudo dnf install grub-customizer
</pre>
<pre class="code">
sudo dnf install tlp tlp-rdw # Reduce Battery Usage
sudo systemctl enable tlp # Enable
sudo tlp-stat -b # To view the Battery informations and status
</pre>
<pre class="code">
https://extensions.gnome.org/extension/307/dash-to-dock/
https://extensions.gnome.org/extension/1160/dash-to-panel/
https://extensions.gnome.org/extension/1228/arc-menu/
https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/?src=search
https://github.com/balena-io/etcher
https://github.com/oguzhaninan/Stacer
</pre>

=Pantheon Desktop=
* src: https://github.com/decathorpe
* src: https://decathorpe.com/fedora-elementary-stable-status.html
* src: https://eos-techs.com/
==Install Desktop==
<pre class="code">
sudo dnf group install "Pantheon Desktop"
sudo dnf install pantheon-session-settings-overrides
...
sudo dnf install lightdm elementary-greeter light-locker
sudo systemctl disable gdm.service
sudo systemctl enable lightdm.service
sudo systemctl set-default graphical.target
</pre>

==Install Tweaks==
<pre class="code">
sudo dnf groupinstall "C Development Tools and Libraries"
sudo dnf install cmake granite-devel unzip switchboard-devel GConf2-devel polkit-devel vala
wget https://github.com/elementary-tweaks/elementary-tweaks/archive/master.zip -O elementary-tweaks-master.zip
unzip elementary-tweaks-master.zip
cd elementary-tweaks-master
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/usr ../
make
sudo make install
</pre>

=Budgie Desktop=
<pre class="code">
sudo dnf copr enable alunux/budgie-desktop-git
sudo dnf install budgie-desktop
sudo dnf install sddm
sudo systemctl disable gdm; sudo systemctl enable sddm
sudo dnf remove gnome-shell*
</pre>

=Layout=
== Fonts ==
<pre class="code">
sudo dnf install open-sans-fonts
sudo dnf install google-roboto-fonts
sudo dnf install google-roboto-mono-fonts
sudo dnf install google-noto-sans-fonts
sudo dnf install msttcore-fonts-installer
sudo dnf install lpf-mscore-fonts lpf-cleartype-fonts
sudo fc-cache -f -v
</pre>
<pre class="code">
wget https://download.jetbrains.com/fonts/JetBrainsMono-1.0.0.zip
unzip JetBrainsMono-1.0.0.zip
mkdir -p ~/.fonts
sudo cp *otf *otc ~/.fonts
sudo cp *otf *otc /usr/share/fonts/opentype/noto
sudo fc-cache -f -v
</pre>
<pre class="code">
Roboto Regular (9) Default/Interface/Desktop font
Roboto Regular (10) Document font
Roboto Mono Regular (9) Monospace font
Roboto Medium (10) Window Title font
---------------------------------------
Text scaling factor: 1.0
Hinting: Full
Antialiasing: RGBA
RGBA Order: RGB
</pre>

== HiDPI ==
* src: https://wiki.archlinux.org/index.php/HiDPI
* src: https://winaero.com/blog/find-change-screen-dpi-linux/
<pre class="code">
xdpyinfo | grep -B 2 resolution
xrandr | grep -w connected
</pre>

= Theme =
* Source: https://github.com/nana-4/materia-theme
* Source: https://github.com/themix-project/oomox
* Source: http://www.ubuntubuzz.com/2019/03/ubuntus-yaru-theme-on-fedora.html
==Style==
<pre class="code">
FG: #D3D7CF
BG: #4B5162
</pre>
<pre class="code">
https://github.com/linuxmint/mint-themes/blob/master/src/Mint-Y/gtk-3.0/gtk.css
.nemo-window .places-treeview {
background-color: rgba(219, 219, 219, 0.15);
}
...
</pre>

== Icons ==

=VNC=
* src: https://docs.fedoraproject.org/en-US/fedora/rawhide/system-administrators-guide/infrastructure-services/TigerVNC/
* src: https://www.server-world.info/en/note?os=Fedora_30&p=desktop&f=6
* src: https://www.tecmint.com/install-vnc-server-on-rhel-8/
<pre class="code">
# dnf -y install tigervnc-server
# firewall-cmd --add-service=vnc-server --permanent
# firewall-cmd --reload
# vncpasswd
# systemctl daemon-reload
# systemctl start vncserver@:1
# systemctl enable vncserver@:1
</pre>

=System-Upgrade=
* src: https://docs.fedoraproject.org/en-US/quick-docs/dnf-system-upgrade/
<pre class="code">
sudo dnf upgrade --refresh # 1. Update software and back up the system
sudo dnf install dnf-plugin-system-upgrade # 2. Install the DNF plugin
sudo dnf system-upgrade download --refresh --releasever=32 # 3. Start the update with DNF
sudo dnf system-upgrade reboot # 4. Reboot and upgrade
</pre>

IT-SDK-Quarkus

2021-07-12T16:09:04Z

Fiducia: /* Startup */

=Quarkus=
==OpenShift==
* https://www.youtube.com/watch?v=QxJQMb35RWU
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/maven-tooling
* https://quarkus.io/guides/deploying-to-kubernetes
* https://quarkus.io/guides/deploying-to-openshift
<pre class="code">
oc new-project $NAME_SPACE
oc project $NAME_SPACE
oc delete $NAME_SPACE
...
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --to="$NAME_BUILD"
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --docker-image $NAME_DOCKER:TAG
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
...
oc start-build $NAME_BUILD --from-dir . --follow --wait
oc new-app --name=$NAME_BUILD --image-stream=$NAME_SPACE/$NAME_BUILD:latest
oc expose svc/$NAME_BUILD
...
oc get is
oc get svc
oc get routes
</pre>

==ref: Roadmap==
* https://lankydan.dev/building-a-rest-api-with-quarkus
* https://github.com/quarkusio/quarkus-quickstarts
* https://redhat-developer-demos.github.io/quarkus-tutorial/quarkus-tutorial/index.html
* https://quarkiverse.github.io/quarkiverse-docs/quarkus-cxf/dev/server.html
* -------------------------------------------------------
* https://quarkus.io/guides/datasource
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/getting-started-reactive
* https://quarkus.io/guides/rest-json
* https://quarkus.io/guides/rest-client
* https://quarkus.io/guides/reactive-sql-clients
* https://quarkus.io/guides/hibernate-orm
* -------------------------------------------------------
* https://quarkus.io/guides/config
* https://quarkus.io/guides/config-reference
* https://quarkus.io/guides/all-config
* https://quarkus.io/guides/maven-tooling
* https://microprofile.io/project/eclipse/microprofile-config
* https://smallrye.io/docs/smallrye-config/index.html
* -------------------------------------------------------
* https://quarkus.io/guides/flyway
* https://quarkus.io/guides/microprofile-graphql
* https://quarkus.io/guides/kubernetes
* https://quarkus.io/quarkus-workshops/super-heroes
* ----------------------------------------------------

==ref: Colletions==
* https://github.com/quarkusio/quarkus/blob/master/integration-tests/flyway/src/main/java/io/quarkus/it/flyway/FlywayFunctionalityResource.java
* https://dzone.com/articles/building-a-rest-api-with-quarkus
* https://www.programcreek.com/java-api-examples/?code=quarkusio%2Fquarkus-quickstarts%2Fquarkus-quickstarts-master
* https://blogs.oracle.com/developers/configuring-the-oracle-jdbc-drivers-with-quarkus
* https://antoniogoncalves.org/2019/06/07/configuring-a-quarkus-application/
* https://dzone.com/articles/build-a-java-rest-api-with-quarkus
* https://dzone.com/articles/quick-guide-to-microservices-with-quarkus-on-opens
* http://www.mastertheboss.com/soa-cloud/quarkus/getting-started-with-quarkus
* https://www.mailing.dzone.com/click.html?x=a62e&lc=Uhy&mc=h&s=hbIX&u=f&z=oIlBEZc&
* https://jaxenter.de/serverless/quarkus-full-stack-framework-87817
<pre class="code">
docker pull maven:3.6-jdk-11-slim
</pre>

==Startup==
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:2.0.1.Final:create"
mvn "io.quarkus:quarkus-maven-plugin:1.11.7.Final:create"
</pre>
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create" \
-DprojectGroupId="net.condolco" \
-DprojectArtifactId="quarkus-openshift" \
-DclassName="net.condolco.SayHello" \
-Dpath="/hello" \
-Dextensions="resteasy,openshift"
</pre>
<pre class="code">
mvn clean
mvn compile
mvn package
...
mvn quarkus:dev
mvn quarkus:list-extensions
mvn quarkus:add-extension -Dextensions="openshift"
</pre>
<pre class="code">
## mode: jvm
mvn clean package -DskipTests
java -jar target/tutorial-app-1.0-SNAPSHOT-runner.jar
...
## mode: native
mvn clean package -DskipTests -Pnative
./target/tutorial-app-1.0-SNAPSHOT-runner
...
## mode: native contianer
mvn clean package -DskipTests -Pnative -Dquarkus.native.container-build=true
docker build -f src/main/docker/Dockerfile.native -t example/tutorial-app:1.0-SNAPSHOT .
docker run -it --rm -p 8080:8080 example/tutorial-app:1.0-SNAPSHOT
</pre>

IT-SDK-Quarkus

2021-07-12T16:01:33Z

Fiducia: /* Startup */

=Quarkus=
==OpenShift==
* https://www.youtube.com/watch?v=QxJQMb35RWU
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/maven-tooling
* https://quarkus.io/guides/deploying-to-kubernetes
* https://quarkus.io/guides/deploying-to-openshift
<pre class="code">
oc new-project $NAME_SPACE
oc project $NAME_SPACE
oc delete $NAME_SPACE
...
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --to="$NAME_BUILD"
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --docker-image $NAME_DOCKER:TAG
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
...
oc start-build $NAME_BUILD --from-dir . --follow --wait
oc new-app --name=$NAME_BUILD --image-stream=$NAME_SPACE/$NAME_BUILD:latest
oc expose svc/$NAME_BUILD
...
oc get is
oc get svc
oc get routes
</pre>

==ref: Roadmap==
* https://lankydan.dev/building-a-rest-api-with-quarkus
* https://github.com/quarkusio/quarkus-quickstarts
* https://redhat-developer-demos.github.io/quarkus-tutorial/quarkus-tutorial/index.html
* https://quarkiverse.github.io/quarkiverse-docs/quarkus-cxf/dev/server.html
* -------------------------------------------------------
* https://quarkus.io/guides/datasource
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/getting-started-reactive
* https://quarkus.io/guides/rest-json
* https://quarkus.io/guides/rest-client
* https://quarkus.io/guides/reactive-sql-clients
* https://quarkus.io/guides/hibernate-orm
* -------------------------------------------------------
* https://quarkus.io/guides/config
* https://quarkus.io/guides/config-reference
* https://quarkus.io/guides/all-config
* https://quarkus.io/guides/maven-tooling
* https://microprofile.io/project/eclipse/microprofile-config
* https://smallrye.io/docs/smallrye-config/index.html
* -------------------------------------------------------
* https://quarkus.io/guides/flyway
* https://quarkus.io/guides/microprofile-graphql
* https://quarkus.io/guides/kubernetes
* https://quarkus.io/quarkus-workshops/super-heroes
* ----------------------------------------------------

==ref: Colletions==
* https://github.com/quarkusio/quarkus/blob/master/integration-tests/flyway/src/main/java/io/quarkus/it/flyway/FlywayFunctionalityResource.java
* https://dzone.com/articles/building-a-rest-api-with-quarkus
* https://www.programcreek.com/java-api-examples/?code=quarkusio%2Fquarkus-quickstarts%2Fquarkus-quickstarts-master
* https://blogs.oracle.com/developers/configuring-the-oracle-jdbc-drivers-with-quarkus
* https://antoniogoncalves.org/2019/06/07/configuring-a-quarkus-application/
* https://dzone.com/articles/build-a-java-rest-api-with-quarkus
* https://dzone.com/articles/quick-guide-to-microservices-with-quarkus-on-opens
* http://www.mastertheboss.com/soa-cloud/quarkus/getting-started-with-quarkus
* https://www.mailing.dzone.com/click.html?x=a62e&lc=Uhy&mc=h&s=hbIX&u=f&z=oIlBEZc&
* https://jaxenter.de/serverless/quarkus-full-stack-framework-87817
<pre class="code">
docker pull maven:3.6-jdk-11-slim
</pre>

==Startup==
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:2.0.1.Final:create"
mvn "io.quarkus:quarkus-maven-plugin:1.11.7.Final:create"
</pre>
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create" \
-DprojectGroupId="net.condolco" \
-DprojectArtifactId="quarkus-openshift" \
-DclassName="net.condolco.SayHello" \
-Dpath="/hello" \
-Dextensions="resteasy,openshift"
</pre>
<pre class="code">
mvn clean
mvn compile
mvn package
...
mvn compile quarkus:dev
mvn quarkus:list-extensions
mvn quarkus:add-extension -Dextensions="hibernate-validator"
mvn quarkus:add-extension -Dextensions="hibernate-*"
</pre>
<pre class="code">
## mode: jvm
mvn clean package -DskipTests
java -jar target/tutorial-app-1.0-SNAPSHOT-runner.jar
</pre>
<pre class="code">
## mode: native
mvn clean package -DskipTests -Pnative
./target/tutorial-app-1.0-SNAPSHOT-runner
</pre>
<pre class="code">
## mode: native contianer
mvn package -DskipTests -Pnative -Dquarkus.native.container-build=true
docker build -f src/main/docker/Dockerfile.native -t example/tutorial-app:1.0-SNAPSHOT .
docker run -it --rm -p 8080:8080 example/tutorial-app:1.0-SNAPSHOT
</pre>

IT-SDK-Quarkus

2021-07-12T15:59:20Z

Fiducia: /* OpenShift */

=Quarkus=
==OpenShift==
* https://www.youtube.com/watch?v=QxJQMb35RWU
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/maven-tooling
* https://quarkus.io/guides/deploying-to-kubernetes
* https://quarkus.io/guides/deploying-to-openshift
<pre class="code">
oc new-project $NAME_SPACE
oc project $NAME_SPACE
oc delete $NAME_SPACE
...
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --to="$NAME_BUILD"
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --docker-image $NAME_DOCKER:TAG
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
...
oc start-build $NAME_BUILD --from-dir . --follow --wait
oc new-app --name=$NAME_BUILD --image-stream=$NAME_SPACE/$NAME_BUILD:latest
oc expose svc/$NAME_BUILD
...
oc get is
oc get svc
oc get routes
</pre>

==ref: Roadmap==
* https://lankydan.dev/building-a-rest-api-with-quarkus
* https://github.com/quarkusio/quarkus-quickstarts
* https://redhat-developer-demos.github.io/quarkus-tutorial/quarkus-tutorial/index.html
* https://quarkiverse.github.io/quarkiverse-docs/quarkus-cxf/dev/server.html
* -------------------------------------------------------
* https://quarkus.io/guides/datasource
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/getting-started-reactive
* https://quarkus.io/guides/rest-json
* https://quarkus.io/guides/rest-client
* https://quarkus.io/guides/reactive-sql-clients
* https://quarkus.io/guides/hibernate-orm
* -------------------------------------------------------
* https://quarkus.io/guides/config
* https://quarkus.io/guides/config-reference
* https://quarkus.io/guides/all-config
* https://quarkus.io/guides/maven-tooling
* https://microprofile.io/project/eclipse/microprofile-config
* https://smallrye.io/docs/smallrye-config/index.html
* -------------------------------------------------------
* https://quarkus.io/guides/flyway
* https://quarkus.io/guides/microprofile-graphql
* https://quarkus.io/guides/kubernetes
* https://quarkus.io/quarkus-workshops/super-heroes
* ----------------------------------------------------

==ref: Colletions==
* https://github.com/quarkusio/quarkus/blob/master/integration-tests/flyway/src/main/java/io/quarkus/it/flyway/FlywayFunctionalityResource.java
* https://dzone.com/articles/building-a-rest-api-with-quarkus
* https://www.programcreek.com/java-api-examples/?code=quarkusio%2Fquarkus-quickstarts%2Fquarkus-quickstarts-master
* https://blogs.oracle.com/developers/configuring-the-oracle-jdbc-drivers-with-quarkus
* https://antoniogoncalves.org/2019/06/07/configuring-a-quarkus-application/
* https://dzone.com/articles/build-a-java-rest-api-with-quarkus
* https://dzone.com/articles/quick-guide-to-microservices-with-quarkus-on-opens
* http://www.mastertheboss.com/soa-cloud/quarkus/getting-started-with-quarkus
* https://www.mailing.dzone.com/click.html?x=a62e&lc=Uhy&mc=h&s=hbIX&u=f&z=oIlBEZc&
* https://jaxenter.de/serverless/quarkus-full-stack-framework-87817
<pre class="code">
docker pull maven:3.6-jdk-11-slim
</pre>

==Startup==
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:2.0.1.Final:create"
mvn "io.quarkus:quarkus-maven-plugin:1.11.7.Final:create"
</pre>
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create" \
-DprojectGroupId="net.condolco" \
-DprojectArtifactId="quarkus-openshift" \
-DclassName="net.condolco.SayHello" \
-Dpath="/hello" \
-Dextensions="resteasy,openshift"
</pre>
<pre class="code">
mvn package # create the project
mvn compile quarkus:dev
mvn quarkus:list-extensions
mvn quarkus:add-extension -Dextensions="hibernate-validator"
mvn quarkus:add-extension -Dextensions="hibernate-*"
</pre>
<pre class="code">
## mode: jvm
mvn clean package -DskipTests
java -jar target/tutorial-app-1.0-SNAPSHOT-runner.jar
</pre>
<pre class="code">
## mode: native
mvn clean package -DskipTests -Pnative
./target/tutorial-app-1.0-SNAPSHOT-runner
</pre>
<pre class="code">
## mode: native contianer
mvn package -DskipTests -Pnative -Dquarkus.native.container-build=true
docker build -f src/main/docker/Dockerfile.native -t example/tutorial-app:1.0-SNAPSHOT .
docker run -it --rm -p 8080:8080 example/tutorial-app:1.0-SNAPSHOT
</pre>

IT-SDK-Quarkus

2021-07-12T14:45:38Z

Fiducia: /* OpenShift */

=Quarkus=
==OpenShift==
* https://www.youtube.com/watch?v=QxJQMb35RWU
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/maven-tooling
* https://quarkus.io/guides/deploying-to-kubernetes
* https://quarkus.io/guides/deploying-to-openshift
<pre class="code">
oc new-project $NAME_SPACE
oc project $NAME_SPACE
oc delete $NAME_SPACE
...
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --to="$NAME_BUILD"
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --docker-image $NAME_DOCKER:TAG
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
...
oc start-build $NAME_BUILD --from-dir . --follow --wait
...
oc new-app --name=$NAME_BUILD --image-stream=$NAME_SPACE/$NAME_BUILD:latest
...
oc expose svc/$NAME_BUILD
oc get is
oc get svc
oc get routes
</pre>
<pre class="code">
oc new-build --name qshift --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
oc start-build --from-dir . qshift
oc new-app --image-stream airhacks/qshift --name qshift
</pre>

==ref: Roadmap==
* https://lankydan.dev/building-a-rest-api-with-quarkus
* https://github.com/quarkusio/quarkus-quickstarts
* https://redhat-developer-demos.github.io/quarkus-tutorial/quarkus-tutorial/index.html
* https://quarkiverse.github.io/quarkiverse-docs/quarkus-cxf/dev/server.html
* -------------------------------------------------------
* https://quarkus.io/guides/datasource
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/getting-started-reactive
* https://quarkus.io/guides/rest-json
* https://quarkus.io/guides/rest-client
* https://quarkus.io/guides/reactive-sql-clients
* https://quarkus.io/guides/hibernate-orm
* -------------------------------------------------------
* https://quarkus.io/guides/config
* https://quarkus.io/guides/config-reference
* https://quarkus.io/guides/all-config
* https://quarkus.io/guides/maven-tooling
* https://microprofile.io/project/eclipse/microprofile-config
* https://smallrye.io/docs/smallrye-config/index.html
* -------------------------------------------------------
* https://quarkus.io/guides/flyway
* https://quarkus.io/guides/microprofile-graphql
* https://quarkus.io/guides/kubernetes
* https://quarkus.io/quarkus-workshops/super-heroes
* ----------------------------------------------------

==ref: Colletions==
* https://github.com/quarkusio/quarkus/blob/master/integration-tests/flyway/src/main/java/io/quarkus/it/flyway/FlywayFunctionalityResource.java
* https://dzone.com/articles/building-a-rest-api-with-quarkus
* https://www.programcreek.com/java-api-examples/?code=quarkusio%2Fquarkus-quickstarts%2Fquarkus-quickstarts-master
* https://blogs.oracle.com/developers/configuring-the-oracle-jdbc-drivers-with-quarkus
* https://antoniogoncalves.org/2019/06/07/configuring-a-quarkus-application/
* https://dzone.com/articles/build-a-java-rest-api-with-quarkus
* https://dzone.com/articles/quick-guide-to-microservices-with-quarkus-on-opens
* http://www.mastertheboss.com/soa-cloud/quarkus/getting-started-with-quarkus
* https://www.mailing.dzone.com/click.html?x=a62e&lc=Uhy&mc=h&s=hbIX&u=f&z=oIlBEZc&
* https://jaxenter.de/serverless/quarkus-full-stack-framework-87817
<pre class="code">
docker pull maven:3.6-jdk-11-slim
</pre>

==Startup==
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:2.0.1.Final:create"
mvn "io.quarkus:quarkus-maven-plugin:1.11.7.Final:create"
</pre>
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create" \
-DprojectGroupId="net.condolco" \
-DprojectArtifactId="quarkus-openshift" \
-DclassName="net.condolco.SayHello" \
-Dpath="/hello" \
-Dextensions="resteasy,openshift"
</pre>
<pre class="code">
mvn package # create the project
mvn compile quarkus:dev
mvn quarkus:list-extensions
mvn quarkus:add-extension -Dextensions="hibernate-validator"
mvn quarkus:add-extension -Dextensions="hibernate-*"
</pre>
<pre class="code">
## mode: jvm
mvn clean package -DskipTests
java -jar target/tutorial-app-1.0-SNAPSHOT-runner.jar
</pre>
<pre class="code">
## mode: native
mvn clean package -DskipTests -Pnative
./target/tutorial-app-1.0-SNAPSHOT-runner
</pre>
<pre class="code">
## mode: native contianer
mvn package -DskipTests -Pnative -Dquarkus.native.container-build=true
docker build -f src/main/docker/Dockerfile.native -t example/tutorial-app:1.0-SNAPSHOT .
docker run -it --rm -p 8080:8080 example/tutorial-app:1.0-SNAPSHOT
</pre>

IT-SDK-Quarkus

2021-07-12T12:31:11Z

Fiducia: /* Startup */

=Quarkus=
==OpenShift==
* https://www.youtube.com/watch?v=QxJQMb35RWU
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/maven-tooling
* https://quarkus.io/guides/deploying-to-kubernetes
* https://quarkus.io/guides/deploying-to-openshift
<pre class="code">
oc new-project $NAME_SPACE
oc project $NAME_SPACE
oc delete $NAME_SPACE
...
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --docker-image $NAME_DOCKER:TAG
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
...
oc start-build $NAME_BUILD --from-dir . --follow --wait
...
oc new-app --name=$NAME_BUILD --image-stream=$NAME_SPACE/$NAME_BUILD:latest
...
oc expose svc/$NAME_BUILD
oc get is
oc get svc
oc get routes
</pre>
<pre class="code">
oc new-build --name qshift --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
oc start-build --from-dir . qshift
oc new-app --image-stream airhacks/qshift --name qshift
</pre>

==ref: Roadmap==
* https://lankydan.dev/building-a-rest-api-with-quarkus
* https://github.com/quarkusio/quarkus-quickstarts
* https://redhat-developer-demos.github.io/quarkus-tutorial/quarkus-tutorial/index.html
* https://quarkiverse.github.io/quarkiverse-docs/quarkus-cxf/dev/server.html
* -------------------------------------------------------
* https://quarkus.io/guides/datasource
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/getting-started-reactive
* https://quarkus.io/guides/rest-json
* https://quarkus.io/guides/rest-client
* https://quarkus.io/guides/reactive-sql-clients
* https://quarkus.io/guides/hibernate-orm
* -------------------------------------------------------
* https://quarkus.io/guides/config
* https://quarkus.io/guides/config-reference
* https://quarkus.io/guides/all-config
* https://quarkus.io/guides/maven-tooling
* https://microprofile.io/project/eclipse/microprofile-config
* https://smallrye.io/docs/smallrye-config/index.html
* -------------------------------------------------------
* https://quarkus.io/guides/flyway
* https://quarkus.io/guides/microprofile-graphql
* https://quarkus.io/guides/kubernetes
* https://quarkus.io/quarkus-workshops/super-heroes
* ----------------------------------------------------

==ref: Colletions==
* https://github.com/quarkusio/quarkus/blob/master/integration-tests/flyway/src/main/java/io/quarkus/it/flyway/FlywayFunctionalityResource.java
* https://dzone.com/articles/building-a-rest-api-with-quarkus
* https://www.programcreek.com/java-api-examples/?code=quarkusio%2Fquarkus-quickstarts%2Fquarkus-quickstarts-master
* https://blogs.oracle.com/developers/configuring-the-oracle-jdbc-drivers-with-quarkus
* https://antoniogoncalves.org/2019/06/07/configuring-a-quarkus-application/
* https://dzone.com/articles/build-a-java-rest-api-with-quarkus
* https://dzone.com/articles/quick-guide-to-microservices-with-quarkus-on-opens
* http://www.mastertheboss.com/soa-cloud/quarkus/getting-started-with-quarkus
* https://www.mailing.dzone.com/click.html?x=a62e&lc=Uhy&mc=h&s=hbIX&u=f&z=oIlBEZc&
* https://jaxenter.de/serverless/quarkus-full-stack-framework-87817
<pre class="code">
docker pull maven:3.6-jdk-11-slim
</pre>

==Startup==
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:2.0.1.Final:create"
mvn "io.quarkus:quarkus-maven-plugin:1.11.7.Final:create"
</pre>
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create" \
-DprojectGroupId="net.condolco" \
-DprojectArtifactId="quarkus-openshift" \
-DclassName="net.condolco.SayHello" \
-Dpath="/hello" \
-Dextensions="resteasy,openshift"
</pre>
<pre class="code">
mvn package # create the project
mvn compile quarkus:dev
mvn quarkus:list-extensions
mvn quarkus:add-extension -Dextensions="hibernate-validator"
mvn quarkus:add-extension -Dextensions="hibernate-*"
</pre>
<pre class="code">
## mode: jvm
mvn clean package -DskipTests
java -jar target/tutorial-app-1.0-SNAPSHOT-runner.jar
</pre>
<pre class="code">
## mode: native
mvn clean package -DskipTests -Pnative
./target/tutorial-app-1.0-SNAPSHOT-runner
</pre>
<pre class="code">
## mode: native contianer
mvn package -DskipTests -Pnative -Dquarkus.native.container-build=true
docker build -f src/main/docker/Dockerfile.native -t example/tutorial-app:1.0-SNAPSHOT .
docker run -it --rm -p 8080:8080 example/tutorial-app:1.0-SNAPSHOT
</pre>

IT-SDK-Quarkus

2021-07-12T12:28:53Z

Fiducia: /* Startup */

=Quarkus=
==OpenShift==
* https://www.youtube.com/watch?v=QxJQMb35RWU
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/maven-tooling
* https://quarkus.io/guides/deploying-to-kubernetes
* https://quarkus.io/guides/deploying-to-openshift
<pre class="code">
oc new-project $NAME_SPACE
oc project $NAME_SPACE
oc delete $NAME_SPACE
...
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --docker-image $NAME_DOCKER:TAG
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
...
oc start-build $NAME_BUILD --from-dir . --follow --wait
...
oc new-app --name=$NAME_BUILD --image-stream=$NAME_SPACE/$NAME_BUILD:latest
...
oc expose svc/$NAME_BUILD
oc get is
oc get svc
oc get routes
</pre>
<pre class="code">
oc new-build --name qshift --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
oc start-build --from-dir . qshift
oc new-app --image-stream airhacks/qshift --name qshift
</pre>

==ref: Roadmap==
* https://lankydan.dev/building-a-rest-api-with-quarkus
* https://github.com/quarkusio/quarkus-quickstarts
* https://redhat-developer-demos.github.io/quarkus-tutorial/quarkus-tutorial/index.html
* https://quarkiverse.github.io/quarkiverse-docs/quarkus-cxf/dev/server.html
* -------------------------------------------------------
* https://quarkus.io/guides/datasource
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/getting-started-reactive
* https://quarkus.io/guides/rest-json
* https://quarkus.io/guides/rest-client
* https://quarkus.io/guides/reactive-sql-clients
* https://quarkus.io/guides/hibernate-orm
* -------------------------------------------------------
* https://quarkus.io/guides/config
* https://quarkus.io/guides/config-reference
* https://quarkus.io/guides/all-config
* https://quarkus.io/guides/maven-tooling
* https://microprofile.io/project/eclipse/microprofile-config
* https://smallrye.io/docs/smallrye-config/index.html
* -------------------------------------------------------
* https://quarkus.io/guides/flyway
* https://quarkus.io/guides/microprofile-graphql
* https://quarkus.io/guides/kubernetes
* https://quarkus.io/quarkus-workshops/super-heroes
* ----------------------------------------------------

==ref: Colletions==
* https://github.com/quarkusio/quarkus/blob/master/integration-tests/flyway/src/main/java/io/quarkus/it/flyway/FlywayFunctionalityResource.java
* https://dzone.com/articles/building-a-rest-api-with-quarkus
* https://www.programcreek.com/java-api-examples/?code=quarkusio%2Fquarkus-quickstarts%2Fquarkus-quickstarts-master
* https://blogs.oracle.com/developers/configuring-the-oracle-jdbc-drivers-with-quarkus
* https://antoniogoncalves.org/2019/06/07/configuring-a-quarkus-application/
* https://dzone.com/articles/build-a-java-rest-api-with-quarkus
* https://dzone.com/articles/quick-guide-to-microservices-with-quarkus-on-opens
* http://www.mastertheboss.com/soa-cloud/quarkus/getting-started-with-quarkus
* https://www.mailing.dzone.com/click.html?x=a62e&lc=Uhy&mc=h&s=hbIX&u=f&z=oIlBEZc&
* https://jaxenter.de/serverless/quarkus-full-stack-framework-87817
<pre class="code">
docker pull maven:3.6-jdk-11-slim
</pre>

==Startup==
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create"
mvn "io.quarkus:quarkus-maven-plugin:1.11.7.Final:create"
</pre>
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create" \
-DprojectGroupId="net.condolco" \
-DprojectArtifactId="quarkus-openshift" \
-DclassName="net.condolco.SayHello" \
-Dpath="/hello" \
-Dextensions="resteasy,openshift"
</pre>
<pre class="code">
mvn package # create the project
mvn compile quarkus:dev
mvn quarkus:list-extensions
mvn quarkus:add-extension -Dextensions="hibernate-validator"
mvn quarkus:add-extension -Dextensions="hibernate-*"
</pre>
<pre class="code">
## mode: jvm
mvn clean package -DskipTests
java -jar target/tutorial-app-1.0-SNAPSHOT-runner.jar
</pre>
<pre class="code">
## mode: native
mvn clean package -DskipTests -Pnative
./target/tutorial-app-1.0-SNAPSHOT-runner
</pre>
<pre class="code">
## mode: native contianer
mvn package -DskipTests -Pnative -Dquarkus.native.container-build=true
docker build -f src/main/docker/Dockerfile.native -t example/tutorial-app:1.0-SNAPSHOT .
docker run -it --rm -p 8080:8080 example/tutorial-app:1.0-SNAPSHOT
</pre>

IT-OS-Admin-Linux

2021-07-08T09:25:16Z

Fiducia: /* KVM */

=Source=
* Commands: https://ss64.com/bash/
* Commands: https://www.codecademy.com/learn/learn-the-command-line
* Commands: https://www.javatpoint.com/linux-tutorial
* Configurations: https://www.server-world.info/en/note?os=Fedora_32
* Docs: https://docs.fedoraproject.org/en-US/docs/
* RHEL-Trainig: https://www.redhat.com/en/services/training/rh024-red-hat-linux-technical-overview
* HowTo: https://www.howtoforge.com/
* Software-Flat: https://flathub.org/
* Software-Snap: https://snapcraft.io/
* News: https://vitux.com/
* https://www.shellscript.sh/functions.html

=Folders & Files=
==Folders==
<pre class="code">
/boot >>Contains boot loader related files.
/bin >>Contains binary executables.
/sbin >>Contains administrator binary executables, just like /bin.
/lib >>Contains 32bit libraries essential for binaries in /bin and /sbin
/lib64 >>Contains 32bit libraries essential for binaries in /bin and /sbin
---
/dev >>Contains device files.
/etc >>Contains configuration files required by all programs.
/opt >>Contains add-on applications from individual vendors.
/usr >>Contains binaries, libraries and source for second level programs.
---
/root >>Home directory for the root user.
/home >>Home directories for all users to store their personal files.
---
/mnt >>Temporary mount directory where sysadmins can mount filesystems.
/media >>Temporary mount directory for removable devices.
---
/proc >>Contains information about system process.
/run >>Run-time variable data
/srv >>Contains server specific services related data.
/sys >>Contains information about the devices connected to the computer.
/var >>Contains files that are expected to grow.
/tmp >>Contains temporary files created by system and users.
</pre>

==Files==
<pre class="code">
/etc/profile (~/.bash_profile or ~/.profile) # Configuration of environment for login shell
/etc/bashrc (~/.bashrc) # Configuration of environment for non-login shell
/etc/environment # Configuration of environment
/etc/hosts # Configuration for hosts
-----------------------------------------------------------------------------------------------------
/etc/fstab # Configuration of Disks
/etc/mtab # Configuration of Mount Devices
/etc/hostname # Where Hostname is saved
/etc/init.d/ # Skripts that will be executed at system start up
/etc/apt/sources.list.d # Ubuntu Reposotiery-Folder
/etc/yum.repos.d/ # Fedora Reposotiery-Folder
/etc/sysconfig/network-scripts/ifcfg-eth0 # Network-cfg
/etc/fonts/conf.d
/etc/fonts/fonts.conf # Font-Configurations
/etc/fonts/local.conf # Font-Configurations
-----------------------------------------------------------------------------------------------------
/usr/share/fonts/ # Users Fonts
/usr/share/themes/ # Users Themes
-----------------------------------------------------------------------------------------------------
~/.fonts.conf.d #
~/.fonts.conf #
-----------------------------------------------------------------------------------------------------
~/.bash_profile #
~/.bashrc # Shell-Config
~/.bash_login #
~/.themes/ # Location of Themes
~/.icons/ # Location of Icons
</pre>

==Top CMD==
<pre class="code">
whoiam # Current user
man # Help
pwd # Present working Directory
ls # List File/Directory
cd # Change Directory
cp # Copy
mv # Move
rm # Remove
mkdir # Create Directory
-----------------------------------------------------------------------------------------------------
cal # Calender
date # Current Date & Time
-----------------------------------------------------------------------------------------------------
df # Report disk space usage
du # Report file space usage
lsblk # List block devices
fdisk # manipulate disk partition table
-----------------------------------------------------------------------------------------------------
cat
less
tail
find
diff
-----------------------------------------------------------------------------------------------------
vi
nano
toch # Create File
grep # print lines matching a pattern
awk # print column matching a pattern
sed # Substitute, replace test
-----------------------------------------------------------------------------------------------------
free # RAM allocation
lscpu # CPU Info
top
ps
history
shutdown
reboot
-----------------------------------------------------------------------------------------------------
<command> & # Start command in Background
exit # exit process
kill # kill -9 $PID;
crontab # crontab -e; crontab -l
-----------------------------------------------------------------------------------------------------
if <command>; then <command> fi
for x in {1..10}; do <command>; done
while:; do <command>; done
until false; do <command>; done
-----------------------------------------------------------------------------------------------------
ctrl+a; ctrl+e; ctrl+d; ctrl+c; ctrl+z; ctrl+r
ctrl+alt+f1 # New tty Session
ctrl+alt+t # New Termina
</pre>

=Commands=
==Basics==
<pre class="code">
$ find . -name testfile.txt # Find a file called testfile.txt in current and sub-directories
$ mv $SOURCE $TARGET # move folder
$ rm -rf $Folder_Name # remove directories force & recursively
</pre>
<pre class="code">
$ ln -s $SOURCE $LINK # create symbolic link
$ ls -l $LINK # list symbolic link
$ unlink $LINK # unlinke symbolic link
</pre>
<pre class="code">
$ toch file.txt # create new empty file.exe
$ echo "Hallo World" # Print out 'Hallo World'
$ echo "Hallo World" > file.txt # To overwrite the content of file.txt
$ echo "Hallo World" >> file.txt # To append to the end of file.txt
$ source file.txt
</pre>
<pre class="code">
$ cat file.txt # Print out the content of file.exe
$ cat source.txt > file.txt # To overwrite the content of file.txt
$ cat source.txt >> file.txt # To append to the end of file.txt
</pre>
<pre class="code">
$ ls /usr/javalib/*.jar # All the .jar files in current directory.
$ ls /usr/javalib/**.jar # All the .jar files in current directory and subdirectories.
</pre>
<pre class="code">
$ sudo tar -C /usr/local -xzf go1.14.4.linux-amd64.tar.gz
$ sudo unzip JetBrainsMono-1.0.0.zip
$ echo "export PATH=$PATH:/usr/local/go/bin" >> /etc/profile
$ source /etc/profile
</pre>

==chmod & chown & chgrp==
<pre class="code">
# USERS >> u:Owner, g:Group, o:Others, a:Everyone:[ugo]
# OPERATION >> +:Add, -:Remove, =:Only
# PERMISSIONS >> r:Read, w:Write, x:Execute
</pre>
<pre class="code">
$ chmod $USERS $OPERATION $PERMISSIONS $FILE_NAME
$ chmod uga+rwx -R $FILE_NAME
$ chmod u=rwx,g=rwx,o=rwx $FILE_NAME
$ chmod -R 0777 ./* # Everyone can do anything
</pre>
<pre class="code">
$ chown $OWNER_NAME $FILE_NAME
$ chgrp $GROUP_NAME $FILE_NAME
</pre>

==System==
<pre class="code">
hostnamectl set-hostname new-name
</pre>
==CronJob==
<pre class="code">
* * * * * auszuführender Befehl
┬ ┬ ┬ ┬ ┬
│ │ │ │ │
│ │ │ │ └──── Wochentag (0-7, Sonntag ist 0 oder 7)
│ │ │ └────── Monat (1-12)
│ │ └──────── Tag (1-31)
│ └────────── Stunde (0-23)
└──────────── Minute (0-59)
</pre>

=CMD-HowTo=
<pre class="code">
# Rename all file names from uppercase to lowercase
for i in $( ls | grep [A-Z] ); do mv -i $i `echo $i | tr 'A-Z' 'a-z'`; done
</pre>
=Shell=
<pre class="code">
-d file # True if file is a directory.
-e file # True if file exists.
-f file # True if file exists and is a regular file.
-L file # True if file is a symbolic link.
-r file # True if file is a file readable by you.
-w file # True if file is a file writable by you.
-x file # True if file is a file executable by you.
file1 -nt file2 # True if file1 is newer than (according to modification time) file2
file1 -ot file2 # True if file1 is older than file2
-z string # True if string is empty.
-n string # True if string is not empty.
string1 = string2 # True if string1 equals string2.
string1 != string2 # True if string1 does not equal string2.

Don't leave a blank variable, unset it if it was empty
read -sr OS_PASSWORD_INPUT
export OS_PASSWORD=$OS_PASSWORD_INPUT
export OS_PROJECT_NAME="demo"
unset OS_USER_DOMAIN_NAME
</pre>
<pre class="code">
timestamp=$(date +%Y%m%d%H%M%S)
nano ~/.bashrc # Auto start the agent
-----------------------------------------
if [[ "$(ps -u $USER | grep ssh-agent | wc -l)" -lt "1" ]]; then
ssh-agent -s >~/.ssh/ssh-agent
. ~/.ssh/ssh-agent >/dev/null
ssh-add ~/.ssh/id_rsa
else
. ~/.ssh/ssh-agent >/dev/null
fi
-----------------------------------------
</pre>

=User=
<pre class="code">
sudo adduser –G [GROUP-ID] [USER-ID] # Add a new Group & User
sudo deluser [USER-ID] # Delete User
sudo remove [USER-ID] # Remove User
...
echo "USER-ID ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
usermod -aG sudo [USER-ID] # Add User to Sudo-Group
sudo visudo # Add “USER-ID ALL=(ALL:ALL) ALL”
id
...
su [USER-ID] # Change User in current Folder
su - [USER-ID] # Change User in User Home-Folder
sudo bash # Login as root
sudo -i # Login as root
sudo -i –u [USER-ID] # Login in account user
passwd [USER-ID] # Change User Password
gpasswd -a user-ID group-ID #
</pre>
=Locale & Keymap & Time=
<pre class="code">
/etc/environment
/etc/locale.conf
~/.config/locale.conf
...
localectl
localectl list-locales
localectl set-locale LANG=en_US.UTF-8
...
localectl
localectl list-keymaps
localectl set-keymap de
...
timedatectl
timedatectl list-timezones
timedatectl set-timezone Europe/Berlin
</pre>
=SSH=
==Settings==
<pre class="code">
$ sudo dnf install openssh-client
$ sudo dnf install openssh-server
$ sudo systemctl restart sshd.service
$ sudo systemctl enable sshd.service
</pre>
* Key-Typs: RSA algorithm and DSA algorithm.
<pre class="code">
$ ~/.ssh/id_rsa.pvt # The file contains the RSA private key.
$ ~/.ssh/id_rsa.pub # The file contains the RSA public key.
$ ~/.ssh/authorized_keys # The file contains the keys that can be used for logging into system.
...
$ chmod go-w ~/
$ chmod 700 ~/.ssh
$ chmod 600 ~/.ssh/authorized_keys
</pre>
<pre class="code">
sudo nano /etc/ssh/ssh_config
sudo nano /etc/ssh/sshd_config
------------------------------
RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile %h/.ssh/authorized_keys
PasswordAuthentication no # Yes: Can login with Password; No: Can’t login with Password
------------------------------
/etc/init.d/ssh restart
</pre>

==Generate Key==
<pre class="code">
$ ssh-keygen -t rsa -f ~/.ssh/id_rsa -C "username@mail.com" # Generate prv and pub Key
$ cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys
$ chmod -R 600 ~/.ssh/id_rsa
$ ssh -i ~/.ssh/id_rsa username@server.com # Login server with prv-key
...
$ ssh-copy-id –i $PATH_PUBLIC_KEY $USERNAME@IP_ADDRESS # Copy Pub-Key to server
$ cat ~/.ssh/id_rsa.pub | ssh user@hostname "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys"
$ ssh user@hostname "echo `cat ~/.ssh/id_rsa.pub` >> ~/.ssh/authorized_keys"
</pre>

==ssh-agent & ssh-add==
* src: https://blog.tinned-software.net/manage-ssh-keys-with-the-ssh-agent/
<pre class="code">
$ vim ~/.ssh/config # Add key automatically to a running agent
-----------------------------------
AddKeysToAgent yes
## Home nas server ##
Host nas01
HostName 192.168.1.100
User root
IdentityFile ~/.ssh/nas01.key
Host github.com
IdentityFile ~/.ssh/github.key
-----------------------------------
</pre>
<pre class="code">
$ eval $(ssh-agent -s) # Start the agent
$ ssh-add ~/.ssh/id_rsa # Add the defualt key
$ ssh-add -l # List keys
$ ssh-add -d /home/user/.ssh/id_rsa # Remove key
$ ssh-add -D # Remove all Keys
$ eval $(ssh-agent -s -k) # Kill the agent
$ ssh -T git@github.com
$ ssh -T git@bitbucket.org
</pre>

=Network=
==KVM (Kernel-Based Virtual Machine)==
* https://computingforgeeks.com/how-to-install-kvm-on-fedora/
* https://linuxconfig.org/how-to-use-bridged-networking-with-libvirt-and-kvm
* https://libvirt.org/sources/virshcmdref/html/chap-Virsh_Command_Reference-Commands.html

<pre class="code">
sudo dnf install @virtualization
sudo dnf install bridge-utils libvirt virt-install qemu-kvm
sudo systemctl status libvirtd
sudo systemctl start libvirtd
sudo systemctl enable libvirtd
sudo virt-host-validate
...
sudo curl -L https://github.com/dhiltgen/docker-machine-kvm/releases/download/v0.10.0/docker-machine-driver-kvm-centos7 -o /usr/local/bin/docker-machine-driver-kvm
sudo chmod +x /usr/local/bin/docker-machine-driver-kvm
...
sudo virsh net-list --all
sudo virsh net-info $NAME_NETWORK
sudo virsh net-dumpxml $NAME_NETWORK
sudo virsh net-destroy $NAME_NETWORK
sudo virsh net-undefine $NAME_NETWORK
...
sudo virsh net-define $NAME_FILE.xml
sudo virsh net-start $NAME_NETWORK
sudo virsh net-autostart $NAME_NETWORK
...
sudo virsh list --all
sudo virsh edit $NAME_VM
...
sudo brctl show br0
</pre>

==Create Bridge==
<pre class="code">
nmcli con add type bridge autoconnect yes con-name br0 ifname br0 ipv4.method auto
nmcli con del enp2s0
nmcli con add type bridge-slave autoconnect yes con-name enp2s0 ifname enp2s0 master br0
</pre>

==Mix==
<pre class="code">
arp -a
nmap -sP 192.168.1.0/24
sudo mount -t cifs -o username=user,password=pin //172.29.32.184/sharename /media/Data/
</pre>

=Firewall=
==Service==
* cmd: status, start, stop, restart, reload, enable, disable
<pre class="code">
$ sudo systemctl status firewalld
$ sudo systemctl status NetworkManager
$ sudo systemctl status network
...
sudo firewall-cmd --reload
</pre>

==Zone==
<pre class="code">
sudo firewall-cmd --get-zones
sudo firewall-cmd --get-active-zones
sudo firewall-cmd --get-default-zone
sudo firewall-cmd --get-services
sudo firewall-cmd --list-all
sudo firewall-cmd --list-ports
</pre>
==Zone-home==
<pre class="code">
sudo firewall-cmd --zone=home --list-all
sudo firewall-cmd --zone=home --list-ports
sudo firewall-cmd --zone=home --list-services
</pre>

==Zone: Configuration==
<pre class="code">
sudo firewall-cmd --set-default-zone=home
sudo firewall-cmd --zone=home --change-interface=eth0
sudo firewall-cmd --zone=home --add-service=http
sudo firewall-cmd --zone=home --add-port=80/tcp --permanent
</pre>

==New Zone "boxblue"==
<pre class="code">
sudo firewall-cmd --permanent --new-zone=boxblue
sudo firewall-cmd --permanent --zone=boxblue --add-service=ssh
sudo firewall-cmd --permanent --zone=boxblue --add-service=http
sudo firewall-cmd --permanent --zone=boxblue --add-service=https
sudo firewall-cmd --permanent --zone=boxblue --add-service=samba
sudo firewall-cmd --permanent --zone=boxblue --add-port=80/tcp
sudo firewall-cmd --permanent --zone=boxblue --add-port=22/tcp
sudo firewall-cmd --permanent --zone=boxblue --change-interface=wlp0s19f2u1
sudo firewall-cmd --permanent --set-default-zone=boxblue
</pre>

=Vim=
Source: https://vim.rtorr.com/
<pre class="code">
Esc Exit the current mode.
i Enter "Insert mode" for inserting text.
v Enter "Visual mode" for character.
V Enter "Visual mode" for line.
: Enter "Command mode".
...
h Move Left
j Move Down
k Move Up
l Move Right
...
ggVG Select hole text
...
u Undo the last operation.
d Delete or Cut selected item.
y Copy line.
p Paste storage buffer after the cursor.
...
:q Quit Vim.
:q! Quit Vim without saving the changes.
:w Save the file
:wq Save the file and quit Vim.
:w $FILE_NAME Save the file with the filename "yx".
</pre>

=Package Manager=
* sudo dpkg -i filename.deb
* sudo rpm -i filename.rpm

==Ubuntu==
* Location: /etc/apt/sources.list
==fedora==
* Location: /etc/yum.repos.d/
* DNF: Dandified YUM
<pre class="code">
sudo rpm –i filename.rpm
...
dnf --version
dnf history
...
sudo ls /etc/yum.repos.d/
sudo dnf repolist
sudo dnf repolist all
sudo dnf config-manager --add-repo <repo-url>
sudo dnf config-manager --set-enabled <repo-id>
sudo dnf config-manager --set-disabled <repo-id>
sudo dnf --enablerepo=<repo-id>
sudo dnf --disablerepo=<repo-id>
sudo dnf copr [enable|disable|remove|list|search] <parameters>
...
sudo dnf list
sudo dnf list installed
sudo dnf list available
sudo dnf check-update
sudo dnf list updates
...
sudo dnf update
sudo dnf upgrade
sudo dnf update vim
sudo dnf search vim
sudo dnf download vim
sudo dnf install vim
sudo dnf reinstall vim
sudo dnf remove vim
sudo dnf erase vim
...
sudo dnf grouplist
sudo dnf grouplist -v
sudo dnf group info 'Development Tools'
sudo dnf groupinstall 'Development Tools'
sudo dnf groupupdate 'Development Tools'
sudo dnf groupremove 'Development Tools'
...
sudo dnf autoremove
sudo dnf clean all
</pre>

=Samba=
* src: https://www.server-world.info/en/note?os=Fedora_31&p=samba&f=1
<pre class="code">
$ /etc/samba/smb.conf
$ systemctl enable --now smb
$ firewall-cmd --add-service=samba --permanent
$ firewall-cmd --reload
</pre>

=Screen=
<pre class="code">
screen -S <name> # start screen new
screen -ls # list screen runing
screen -r <name> # reattach to a session name
..
Ctrl+a c # create window
Ctrl+a n # next window
Ctrl+a p # previous window
Ctrl+a k # kill window
Ctrl+a d # detach window
</pre>

=Desktop Environments=
==Links==
* src: https://www.ukui.org/index.html
* src: https://www.ubuntukylin.com/index.php?lang=en
==Display Server (Xorg/Wayland)==
<pre class="code">
loginctl # get session number from command output
loginctl show-session 2 -p Type
...
vi /etc/gdm/custom.conf
vi /etc/gdm3/custom.conf
-----------------------
WaylandEnable=false # To disable Wayland
DefaultSession=gnome-xorg.desktop # To enable Xorg
-----------------------
</pre>

==Sessions==
<pre class="code">
ls -l /usr/share/xsessions/ # Lists installed desktop enviruments
echo $XDG_CURRENT_DESKTOP
</pre>
==Display Manager: lightdm==
* Install Display-Manager
* Install Greeter
* Setting Greeter
<pre class="code">
sudo dnf install lightdm # Display-Manager
sudo dnf install elementary-greeter slick-greeter slick-greeter-cinnamon slick-greeter-mate # Greeter-Typs
sudo dnf install lightdm-settings # For Settings
...
ls /usr/share/lightdm/lightdm.conf.d/ # System-Settings
ls /etc/lightdm/lightdm.conf.d/ # User-Settings
lightdm --show-config
...
[Seat:*]
greeter-session=slick-greeter
user-session=cinnamon
</pre>

IT-OS-Admin-Linux

2021-07-08T09:20:07Z

Fiducia: /* KVM */

=Source=
* Commands: https://ss64.com/bash/
* Commands: https://www.codecademy.com/learn/learn-the-command-line
* Commands: https://www.javatpoint.com/linux-tutorial
* Configurations: https://www.server-world.info/en/note?os=Fedora_32
* Docs: https://docs.fedoraproject.org/en-US/docs/
* RHEL-Trainig: https://www.redhat.com/en/services/training/rh024-red-hat-linux-technical-overview
* HowTo: https://www.howtoforge.com/
* Software-Flat: https://flathub.org/
* Software-Snap: https://snapcraft.io/
* News: https://vitux.com/
* https://www.shellscript.sh/functions.html

=Folders & Files=
==Folders==
<pre class="code">
/boot >>Contains boot loader related files.
/bin >>Contains binary executables.
/sbin >>Contains administrator binary executables, just like /bin.
/lib >>Contains 32bit libraries essential for binaries in /bin and /sbin
/lib64 >>Contains 32bit libraries essential for binaries in /bin and /sbin
---
/dev >>Contains device files.
/etc >>Contains configuration files required by all programs.
/opt >>Contains add-on applications from individual vendors.
/usr >>Contains binaries, libraries and source for second level programs.
---
/root >>Home directory for the root user.
/home >>Home directories for all users to store their personal files.
---
/mnt >>Temporary mount directory where sysadmins can mount filesystems.
/media >>Temporary mount directory for removable devices.
---
/proc >>Contains information about system process.
/run >>Run-time variable data
/srv >>Contains server specific services related data.
/sys >>Contains information about the devices connected to the computer.
/var >>Contains files that are expected to grow.
/tmp >>Contains temporary files created by system and users.
</pre>

==Files==
<pre class="code">
/etc/profile (~/.bash_profile or ~/.profile) # Configuration of environment for login shell
/etc/bashrc (~/.bashrc) # Configuration of environment for non-login shell
/etc/environment # Configuration of environment
/etc/hosts # Configuration for hosts
-----------------------------------------------------------------------------------------------------
/etc/fstab # Configuration of Disks
/etc/mtab # Configuration of Mount Devices
/etc/hostname # Where Hostname is saved
/etc/init.d/ # Skripts that will be executed at system start up
/etc/apt/sources.list.d # Ubuntu Reposotiery-Folder
/etc/yum.repos.d/ # Fedora Reposotiery-Folder
/etc/sysconfig/network-scripts/ifcfg-eth0 # Network-cfg
/etc/fonts/conf.d
/etc/fonts/fonts.conf # Font-Configurations
/etc/fonts/local.conf # Font-Configurations
-----------------------------------------------------------------------------------------------------
/usr/share/fonts/ # Users Fonts
/usr/share/themes/ # Users Themes
-----------------------------------------------------------------------------------------------------
~/.fonts.conf.d #
~/.fonts.conf #
-----------------------------------------------------------------------------------------------------
~/.bash_profile #
~/.bashrc # Shell-Config
~/.bash_login #
~/.themes/ # Location of Themes
~/.icons/ # Location of Icons
</pre>

==Top CMD==
<pre class="code">
whoiam # Current user
man # Help
pwd # Present working Directory
ls # List File/Directory
cd # Change Directory
cp # Copy
mv # Move
rm # Remove
mkdir # Create Directory
-----------------------------------------------------------------------------------------------------
cal # Calender
date # Current Date & Time
-----------------------------------------------------------------------------------------------------
df # Report disk space usage
du # Report file space usage
lsblk # List block devices
fdisk # manipulate disk partition table
-----------------------------------------------------------------------------------------------------
cat
less
tail
find
diff
-----------------------------------------------------------------------------------------------------
vi
nano
toch # Create File
grep # print lines matching a pattern
awk # print column matching a pattern
sed # Substitute, replace test
-----------------------------------------------------------------------------------------------------
free # RAM allocation
lscpu # CPU Info
top
ps
history
shutdown
reboot
-----------------------------------------------------------------------------------------------------
<command> & # Start command in Background
exit # exit process
kill # kill -9 $PID;
crontab # crontab -e; crontab -l
-----------------------------------------------------------------------------------------------------
if <command>; then <command> fi
for x in {1..10}; do <command>; done
while:; do <command>; done
until false; do <command>; done
-----------------------------------------------------------------------------------------------------
ctrl+a; ctrl+e; ctrl+d; ctrl+c; ctrl+z; ctrl+r
ctrl+alt+f1 # New tty Session
ctrl+alt+t # New Termina
</pre>

=Commands=
==Basics==
<pre class="code">
$ find . -name testfile.txt # Find a file called testfile.txt in current and sub-directories
$ mv $SOURCE $TARGET # move folder
$ rm -rf $Folder_Name # remove directories force & recursively
</pre>
<pre class="code">
$ ln -s $SOURCE $LINK # create symbolic link
$ ls -l $LINK # list symbolic link
$ unlink $LINK # unlinke symbolic link
</pre>
<pre class="code">
$ toch file.txt # create new empty file.exe
$ echo "Hallo World" # Print out 'Hallo World'
$ echo "Hallo World" > file.txt # To overwrite the content of file.txt
$ echo "Hallo World" >> file.txt # To append to the end of file.txt
$ source file.txt
</pre>
<pre class="code">
$ cat file.txt # Print out the content of file.exe
$ cat source.txt > file.txt # To overwrite the content of file.txt
$ cat source.txt >> file.txt # To append to the end of file.txt
</pre>
<pre class="code">
$ ls /usr/javalib/*.jar # All the .jar files in current directory.
$ ls /usr/javalib/**.jar # All the .jar files in current directory and subdirectories.
</pre>
<pre class="code">
$ sudo tar -C /usr/local -xzf go1.14.4.linux-amd64.tar.gz
$ sudo unzip JetBrainsMono-1.0.0.zip
$ echo "export PATH=$PATH:/usr/local/go/bin" >> /etc/profile
$ source /etc/profile
</pre>

==chmod & chown & chgrp==
<pre class="code">
# USERS >> u:Owner, g:Group, o:Others, a:Everyone:[ugo]
# OPERATION >> +:Add, -:Remove, =:Only
# PERMISSIONS >> r:Read, w:Write, x:Execute
</pre>
<pre class="code">
$ chmod $USERS $OPERATION $PERMISSIONS $FILE_NAME
$ chmod uga+rwx -R $FILE_NAME
$ chmod u=rwx,g=rwx,o=rwx $FILE_NAME
$ chmod -R 0777 ./* # Everyone can do anything
</pre>
<pre class="code">
$ chown $OWNER_NAME $FILE_NAME
$ chgrp $GROUP_NAME $FILE_NAME
</pre>

==System==
<pre class="code">
hostnamectl set-hostname new-name
</pre>
==CronJob==
<pre class="code">
* * * * * auszuführender Befehl
┬ ┬ ┬ ┬ ┬
│ │ │ │ │
│ │ │ │ └──── Wochentag (0-7, Sonntag ist 0 oder 7)
│ │ │ └────── Monat (1-12)
│ │ └──────── Tag (1-31)
│ └────────── Stunde (0-23)
└──────────── Minute (0-59)
</pre>

=CMD-HowTo=
<pre class="code">
# Rename all file names from uppercase to lowercase
for i in $( ls | grep [A-Z] ); do mv -i $i `echo $i | tr 'A-Z' 'a-z'`; done
</pre>
=Shell=
<pre class="code">
-d file # True if file is a directory.
-e file # True if file exists.
-f file # True if file exists and is a regular file.
-L file # True if file is a symbolic link.
-r file # True if file is a file readable by you.
-w file # True if file is a file writable by you.
-x file # True if file is a file executable by you.
file1 -nt file2 # True if file1 is newer than (according to modification time) file2
file1 -ot file2 # True if file1 is older than file2
-z string # True if string is empty.
-n string # True if string is not empty.
string1 = string2 # True if string1 equals string2.
string1 != string2 # True if string1 does not equal string2.

Don't leave a blank variable, unset it if it was empty
read -sr OS_PASSWORD_INPUT
export OS_PASSWORD=$OS_PASSWORD_INPUT
export OS_PROJECT_NAME="demo"
unset OS_USER_DOMAIN_NAME
</pre>
<pre class="code">
timestamp=$(date +%Y%m%d%H%M%S)
nano ~/.bashrc # Auto start the agent
-----------------------------------------
if [[ "$(ps -u $USER | grep ssh-agent | wc -l)" -lt "1" ]]; then
ssh-agent -s >~/.ssh/ssh-agent
. ~/.ssh/ssh-agent >/dev/null
ssh-add ~/.ssh/id_rsa
else
. ~/.ssh/ssh-agent >/dev/null
fi
-----------------------------------------
</pre>

=User=
<pre class="code">
sudo adduser –G [GROUP-ID] [USER-ID] # Add a new Group & User
sudo deluser [USER-ID] # Delete User
sudo remove [USER-ID] # Remove User
...
echo "USER-ID ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
usermod -aG sudo [USER-ID] # Add User to Sudo-Group
sudo visudo # Add “USER-ID ALL=(ALL:ALL) ALL”
id
...
su [USER-ID] # Change User in current Folder
su - [USER-ID] # Change User in User Home-Folder
sudo bash # Login as root
sudo -i # Login as root
sudo -i –u [USER-ID] # Login in account user
passwd [USER-ID] # Change User Password
gpasswd -a user-ID group-ID #
</pre>
=Locale & Keymap & Time=
<pre class="code">
/etc/environment
/etc/locale.conf
~/.config/locale.conf
...
localectl
localectl list-locales
localectl set-locale LANG=en_US.UTF-8
...
localectl
localectl list-keymaps
localectl set-keymap de
...
timedatectl
timedatectl list-timezones
timedatectl set-timezone Europe/Berlin
</pre>
=SSH=
==Settings==
<pre class="code">
$ sudo dnf install openssh-client
$ sudo dnf install openssh-server
$ sudo systemctl restart sshd.service
$ sudo systemctl enable sshd.service
</pre>
* Key-Typs: RSA algorithm and DSA algorithm.
<pre class="code">
$ ~/.ssh/id_rsa.pvt # The file contains the RSA private key.
$ ~/.ssh/id_rsa.pub # The file contains the RSA public key.
$ ~/.ssh/authorized_keys # The file contains the keys that can be used for logging into system.
...
$ chmod go-w ~/
$ chmod 700 ~/.ssh
$ chmod 600 ~/.ssh/authorized_keys
</pre>
<pre class="code">
sudo nano /etc/ssh/ssh_config
sudo nano /etc/ssh/sshd_config
------------------------------
RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile %h/.ssh/authorized_keys
PasswordAuthentication no # Yes: Can login with Password; No: Can’t login with Password
------------------------------
/etc/init.d/ssh restart
</pre>

==Generate Key==
<pre class="code">
$ ssh-keygen -t rsa -f ~/.ssh/id_rsa -C "username@mail.com" # Generate prv and pub Key
$ cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys
$ chmod -R 600 ~/.ssh/id_rsa
$ ssh -i ~/.ssh/id_rsa username@server.com # Login server with prv-key
...
$ ssh-copy-id –i $PATH_PUBLIC_KEY $USERNAME@IP_ADDRESS # Copy Pub-Key to server
$ cat ~/.ssh/id_rsa.pub | ssh user@hostname "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys"
$ ssh user@hostname "echo `cat ~/.ssh/id_rsa.pub` >> ~/.ssh/authorized_keys"
</pre>

==ssh-agent & ssh-add==
* src: https://blog.tinned-software.net/manage-ssh-keys-with-the-ssh-agent/
<pre class="code">
$ vim ~/.ssh/config # Add key automatically to a running agent
-----------------------------------
AddKeysToAgent yes
## Home nas server ##
Host nas01
HostName 192.168.1.100
User root
IdentityFile ~/.ssh/nas01.key
Host github.com
IdentityFile ~/.ssh/github.key
-----------------------------------
</pre>
<pre class="code">
$ eval $(ssh-agent -s) # Start the agent
$ ssh-add ~/.ssh/id_rsa # Add the defualt key
$ ssh-add -l # List keys
$ ssh-add -d /home/user/.ssh/id_rsa # Remove key
$ ssh-add -D # Remove all Keys
$ eval $(ssh-agent -s -k) # Kill the agent
$ ssh -T git@github.com
$ ssh -T git@bitbucket.org
</pre>

=Network=
==KVM==
* https://computingforgeeks.com/how-to-install-kvm-on-fedora/
* https://linuxconfig.org/how-to-use-bridged-networking-with-libvirt-and-kvm
* https://libvirt.org/sources/virshcmdref/html/chap-Virsh_Command_Reference-Commands.html
<pre class="code">
sudo dnf install @virtualization
sudo dnf -y install bridge-utils libvirt virt-install qemu-kvm
sudo systemctl status libvirtd
sudo systemctl start libvirtd
sudo systemctl enable libvirtd
sudo virt-host-validate
...
sudo curl -L https://github.com/dhiltgen/docker-machine-kvm/releases/download/v0.10.0/docker-machine-driver-kvm-centos7 -o /usr/local/bin/docker-machine-driver-kvm
sudo chmod +x /usr/local/bin/docker-machine-driver-kvm
...
sudo virsh net-list --all
sudo virsh net-info $NAME_NETWORK
sudo virsh net-dumpxml $NAME_NETWORK
sudo virsh net-destroy $NAME_NETWORK
sudo virsh net-undefine $NAME_NETWORK
...
sudo virsh net-define $NAME_FILE.xml
sudo virsh net-start $NAME_NETWORK
sudo virsh net-autostart $NAME_NETWORK
...
sudo virsh list --all
sudo virsh edit $NAME_VM
...
sudo brctl show br0
</pre>

==Create Bridge==
<pre class="code">
nmcli con add type bridge autoconnect yes con-name br0 ifname br0 ipv4.method auto
nmcli con del enp2s0
nmcli con add type bridge-slave autoconnect yes con-name enp2s0 ifname enp2s0 master br0
</pre>

==Mix==
<pre class="code">
arp -a
nmap -sP 192.168.1.0/24
sudo mount -t cifs -o username=user,password=pin //172.29.32.184/sharename /media/Data/
</pre>

=Firewall=
==Service==
* cmd: status, start, stop, restart, reload, enable, disable
<pre class="code">
$ sudo systemctl status firewalld
$ sudo systemctl status NetworkManager
$ sudo systemctl status network
...
sudo firewall-cmd --reload
</pre>

==Zone==
<pre class="code">
sudo firewall-cmd --get-zones
sudo firewall-cmd --get-active-zones
sudo firewall-cmd --get-default-zone
sudo firewall-cmd --get-services
sudo firewall-cmd --list-all
sudo firewall-cmd --list-ports
</pre>
==Zone-home==
<pre class="code">
sudo firewall-cmd --zone=home --list-all
sudo firewall-cmd --zone=home --list-ports
sudo firewall-cmd --zone=home --list-services
</pre>

==Zone: Configuration==
<pre class="code">
sudo firewall-cmd --set-default-zone=home
sudo firewall-cmd --zone=home --change-interface=eth0
sudo firewall-cmd --zone=home --add-service=http
sudo firewall-cmd --zone=home --add-port=80/tcp --permanent
</pre>

==New Zone "boxblue"==
<pre class="code">
sudo firewall-cmd --permanent --new-zone=boxblue
sudo firewall-cmd --permanent --zone=boxblue --add-service=ssh
sudo firewall-cmd --permanent --zone=boxblue --add-service=http
sudo firewall-cmd --permanent --zone=boxblue --add-service=https
sudo firewall-cmd --permanent --zone=boxblue --add-service=samba
sudo firewall-cmd --permanent --zone=boxblue --add-port=80/tcp
sudo firewall-cmd --permanent --zone=boxblue --add-port=22/tcp
sudo firewall-cmd --permanent --zone=boxblue --change-interface=wlp0s19f2u1
sudo firewall-cmd --permanent --set-default-zone=boxblue
</pre>

=Vim=
Source: https://vim.rtorr.com/
<pre class="code">
Esc Exit the current mode.
i Enter "Insert mode" for inserting text.
v Enter "Visual mode" for character.
V Enter "Visual mode" for line.
: Enter "Command mode".
...
h Move Left
j Move Down
k Move Up
l Move Right
...
ggVG Select hole text
...
u Undo the last operation.
d Delete or Cut selected item.
y Copy line.
p Paste storage buffer after the cursor.
...
:q Quit Vim.
:q! Quit Vim without saving the changes.
:w Save the file
:wq Save the file and quit Vim.
:w $FILE_NAME Save the file with the filename "yx".
</pre>

=Package Manager=
* sudo dpkg -i filename.deb
* sudo rpm -i filename.rpm

==Ubuntu==
* Location: /etc/apt/sources.list
==fedora==
* Location: /etc/yum.repos.d/
* DNF: Dandified YUM
<pre class="code">
sudo rpm –i filename.rpm
...
dnf --version
dnf history
...
sudo ls /etc/yum.repos.d/
sudo dnf repolist
sudo dnf repolist all
sudo dnf config-manager --add-repo <repo-url>
sudo dnf config-manager --set-enabled <repo-id>
sudo dnf config-manager --set-disabled <repo-id>
sudo dnf --enablerepo=<repo-id>
sudo dnf --disablerepo=<repo-id>
sudo dnf copr [enable|disable|remove|list|search] <parameters>
...
sudo dnf list
sudo dnf list installed
sudo dnf list available
sudo dnf check-update
sudo dnf list updates
...
sudo dnf update
sudo dnf upgrade
sudo dnf update vim
sudo dnf search vim
sudo dnf download vim
sudo dnf install vim
sudo dnf reinstall vim
sudo dnf remove vim
sudo dnf erase vim
...
sudo dnf grouplist
sudo dnf grouplist -v
sudo dnf group info 'Development Tools'
sudo dnf groupinstall 'Development Tools'
sudo dnf groupupdate 'Development Tools'
sudo dnf groupremove 'Development Tools'
...
sudo dnf autoremove
sudo dnf clean all
</pre>

=Samba=
* src: https://www.server-world.info/en/note?os=Fedora_31&p=samba&f=1
<pre class="code">
$ /etc/samba/smb.conf
$ systemctl enable --now smb
$ firewall-cmd --add-service=samba --permanent
$ firewall-cmd --reload
</pre>

=Screen=
<pre class="code">
screen -S <name> # start screen new
screen -ls # list screen runing
screen -r <name> # reattach to a session name
..
Ctrl+a c # create window
Ctrl+a n # next window
Ctrl+a p # previous window
Ctrl+a k # kill window
Ctrl+a d # detach window
</pre>

=Desktop Environments=
==Links==
* src: https://www.ukui.org/index.html
* src: https://www.ubuntukylin.com/index.php?lang=en
==Display Server (Xorg/Wayland)==
<pre class="code">
loginctl # get session number from command output
loginctl show-session 2 -p Type
...
vi /etc/gdm/custom.conf
vi /etc/gdm3/custom.conf
-----------------------
WaylandEnable=false # To disable Wayland
DefaultSession=gnome-xorg.desktop # To enable Xorg
-----------------------
</pre>

==Sessions==
<pre class="code">
ls -l /usr/share/xsessions/ # Lists installed desktop enviruments
echo $XDG_CURRENT_DESKTOP
</pre>
==Display Manager: lightdm==
* Install Display-Manager
* Install Greeter
* Setting Greeter
<pre class="code">
sudo dnf install lightdm # Display-Manager
sudo dnf install elementary-greeter slick-greeter slick-greeter-cinnamon slick-greeter-mate # Greeter-Typs
sudo dnf install lightdm-settings # For Settings
...
ls /usr/share/lightdm/lightdm.conf.d/ # System-Settings
ls /etc/lightdm/lightdm.conf.d/ # User-Settings
lightdm --show-config
...
[Seat:*]
greeter-session=slick-greeter
user-session=cinnamon
</pre>

IT-SDK-API

2021-07-06T13:27:11Z

Fiducia: /* Ref */

IT-SDK-Quarkus

2021-07-06T08:41:39Z

Fiducia: /* Startup */

=Quarkus=
==OpenShift==
* https://www.youtube.com/watch?v=QxJQMb35RWU
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/maven-tooling
* https://quarkus.io/guides/deploying-to-kubernetes
* https://quarkus.io/guides/deploying-to-openshift
<pre class="code">
oc new-project $NAME_SPACE
oc project $NAME_SPACE
oc delete $NAME_SPACE
...
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --docker-image $NAME_DOCKER:TAG
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
...
oc start-build $NAME_BUILD --from-dir . --follow --wait
...
oc new-app --name=$NAME_BUILD --image-stream=$NAME_SPACE/$NAME_BUILD:latest
...
oc expose svc/$NAME_BUILD
oc get is
oc get svc
oc get routes
</pre>
<pre class="code">
oc new-build --name qshift --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
oc start-build --from-dir . qshift
oc new-app --image-stream airhacks/qshift --name qshift
</pre>

==ref: Roadmap==
* https://lankydan.dev/building-a-rest-api-with-quarkus
* https://github.com/quarkusio/quarkus-quickstarts
* https://redhat-developer-demos.github.io/quarkus-tutorial/quarkus-tutorial/index.html
* https://quarkiverse.github.io/quarkiverse-docs/quarkus-cxf/dev/server.html
* -------------------------------------------------------
* https://quarkus.io/guides/datasource
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/getting-started-reactive
* https://quarkus.io/guides/rest-json
* https://quarkus.io/guides/rest-client
* https://quarkus.io/guides/reactive-sql-clients
* https://quarkus.io/guides/hibernate-orm
* -------------------------------------------------------
* https://quarkus.io/guides/config
* https://quarkus.io/guides/config-reference
* https://quarkus.io/guides/all-config
* https://quarkus.io/guides/maven-tooling
* https://microprofile.io/project/eclipse/microprofile-config
* https://smallrye.io/docs/smallrye-config/index.html
* -------------------------------------------------------
* https://quarkus.io/guides/flyway
* https://quarkus.io/guides/microprofile-graphql
* https://quarkus.io/guides/kubernetes
* https://quarkus.io/quarkus-workshops/super-heroes
* ----------------------------------------------------

==ref: Colletions==
* https://github.com/quarkusio/quarkus/blob/master/integration-tests/flyway/src/main/java/io/quarkus/it/flyway/FlywayFunctionalityResource.java
* https://dzone.com/articles/building-a-rest-api-with-quarkus
* https://www.programcreek.com/java-api-examples/?code=quarkusio%2Fquarkus-quickstarts%2Fquarkus-quickstarts-master
* https://blogs.oracle.com/developers/configuring-the-oracle-jdbc-drivers-with-quarkus
* https://antoniogoncalves.org/2019/06/07/configuring-a-quarkus-application/
* https://dzone.com/articles/build-a-java-rest-api-with-quarkus
* https://dzone.com/articles/quick-guide-to-microservices-with-quarkus-on-opens
* http://www.mastertheboss.com/soa-cloud/quarkus/getting-started-with-quarkus
* https://www.mailing.dzone.com/click.html?x=a62e&lc=Uhy&mc=h&s=hbIX&u=f&z=oIlBEZc&
* https://jaxenter.de/serverless/quarkus-full-stack-framework-87817
<pre class="code">
docker pull maven:3.6-jdk-11-slim
</pre>

==Startup==
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create"
------------------------------------------------------------
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create" \
-DprojectGroupId="net.condolco" \
-DprojectArtifactId="quarkus-openshift" \
-DclassName="net.condolco.SayHello" \
-Dpath="/hello" \
-Dextensions="resteasy,openshift"
</pre>
<pre class="code">
mvn package # create the project
mvn compile quarkus:dev
mvn quarkus:list-extensions
mvn quarkus:add-extension -Dextensions="hibernate-validator"
mvn quarkus:add-extension -Dextensions="hibernate-*"
</pre>
<pre class="code">
## mode: jvm
mvn clean package -DskipTests
java -jar target/tutorial-app-1.0-SNAPSHOT-runner.jar
</pre>
<pre class="code">
## mode: native
mvn clean package -DskipTests -Pnative
./target/tutorial-app-1.0-SNAPSHOT-runner
</pre>
<pre class="code">
## mode: native contianer
mvn package -DskipTests -Pnative -Dquarkus.native.container-build=true
docker build -f src/main/docker/Dockerfile.native -t example/tutorial-app:1.0-SNAPSHOT .
docker run -it --rm -p 8080:8080 example/tutorial-app:1.0-SNAPSHOT
</pre>

IT-SDK-Quarkus

2021-07-05T22:08:52Z

Fiducia: /* OpenShift */

=Quarkus=
==OpenShift==
* https://www.youtube.com/watch?v=QxJQMb35RWU
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/maven-tooling
* https://quarkus.io/guides/deploying-to-kubernetes
* https://quarkus.io/guides/deploying-to-openshift
<pre class="code">
oc new-project $NAME_SPACE
oc project $NAME_SPACE
oc delete $NAME_SPACE
...
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --binary --docker-image $NAME_DOCKER:TAG
oc new-build --name $NAME_BUILD --namespace $NAME_SPACE --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
...
oc start-build $NAME_BUILD --from-dir . --follow --wait
...
oc new-app --name=$NAME_BUILD --image-stream=$NAME_SPACE/$NAME_BUILD:latest
...
oc expose svc/$NAME_BUILD
oc get is
oc get svc
oc get routes
</pre>
<pre class="code">
oc new-build --name qshift --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
oc start-build --from-dir . qshift
oc new-app --image-stream airhacks/qshift --name qshift
</pre>

==ref: Roadmap==
* https://lankydan.dev/building-a-rest-api-with-quarkus
* https://github.com/quarkusio/quarkus-quickstarts
* https://redhat-developer-demos.github.io/quarkus-tutorial/quarkus-tutorial/index.html
* https://quarkiverse.github.io/quarkiverse-docs/quarkus-cxf/dev/server.html
* -------------------------------------------------------
* https://quarkus.io/guides/datasource
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/getting-started-reactive
* https://quarkus.io/guides/rest-json
* https://quarkus.io/guides/rest-client
* https://quarkus.io/guides/reactive-sql-clients
* https://quarkus.io/guides/hibernate-orm
* -------------------------------------------------------
* https://quarkus.io/guides/config
* https://quarkus.io/guides/config-reference
* https://quarkus.io/guides/all-config
* https://quarkus.io/guides/maven-tooling
* https://microprofile.io/project/eclipse/microprofile-config
* https://smallrye.io/docs/smallrye-config/index.html
* -------------------------------------------------------
* https://quarkus.io/guides/flyway
* https://quarkus.io/guides/microprofile-graphql
* https://quarkus.io/guides/kubernetes
* https://quarkus.io/quarkus-workshops/super-heroes
* ----------------------------------------------------

==ref: Colletions==
* https://github.com/quarkusio/quarkus/blob/master/integration-tests/flyway/src/main/java/io/quarkus/it/flyway/FlywayFunctionalityResource.java
* https://dzone.com/articles/building-a-rest-api-with-quarkus
* https://www.programcreek.com/java-api-examples/?code=quarkusio%2Fquarkus-quickstarts%2Fquarkus-quickstarts-master
* https://blogs.oracle.com/developers/configuring-the-oracle-jdbc-drivers-with-quarkus
* https://antoniogoncalves.org/2019/06/07/configuring-a-quarkus-application/
* https://dzone.com/articles/build-a-java-rest-api-with-quarkus
* https://dzone.com/articles/quick-guide-to-microservices-with-quarkus-on-opens
* http://www.mastertheboss.com/soa-cloud/quarkus/getting-started-with-quarkus
* https://www.mailing.dzone.com/click.html?x=a62e&lc=Uhy&mc=h&s=hbIX&u=f&z=oIlBEZc&
* https://jaxenter.de/serverless/quarkus-full-stack-framework-87817
<pre class="code">
docker pull maven:3.6-jdk-11-slim
</pre>

==Startup==
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create"
------------------------------------------------------------
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create" \
-DprojectGroupId="net.condolco" \
-DprojectArtifactId="quarkus-app-00" \
-DclassName="init.SayHello" \
-Dpath="/hello" \
-Dextensions="resteasy,resteasy-jackson"
</pre>
<pre class="code">
mvn package # create the project
mvn compile quarkus:dev
mvn quarkus:list-extensions
mvn quarkus:add-extension -Dextensions="hibernate-validator"
mvn quarkus:add-extension -Dextensions="hibernate-*"
</pre>
<pre class="code">
## mode: jvm
mvn clean package -DskipTests
java -jar target/tutorial-app-1.0-SNAPSHOT-runner.jar
</pre>
<pre class="code">
## mode: native
mvn clean package -DskipTests -Pnative
./target/tutorial-app-1.0-SNAPSHOT-runner
</pre>
<pre class="code">
## mode: native contianer
mvn package -DskipTests -Pnative -Dquarkus.native.container-build=true
docker build -f src/main/docker/Dockerfile.native -t example/tutorial-app:1.0-SNAPSHOT .
docker run -it --rm -p 8080:8080 example/tutorial-app:1.0-SNAPSHOT
</pre>

IT-SDK-GitOps

2021-07-05T10:26:38Z

Fiducia: /* Tools */

=Notes=
* GitOps is same as GitHub-Pages und Jekyll.
=Ref.=
* https://www.dev-insider.de/was-ist-gitops-a-915663/
* https://www.dev-insider.de/wie-funktioniert-gitops-in-der-praxis-a-928759/
* https://www.dev-insider.de/gitops-tools-in-der-uebersicht-a-943715/

=Tools=
* Argo: https://github.com/argoproj/argo-cd
* Flux: https://github.com/fluxcd/flux
* https://www.runatlantis.io/
* https://github.com/autoapply/autoapply
* https://flagger.app/
* https://github.com/pusher/faros
* https://github.com/hasura/gitkube
* https://www.kubestack.com/
* https://werf.io/
=Tutorials=
* https://www.openshift.com/blog/continuous-delivery-with-helm-and-argo-cd

IT-SDK-GitOps

2021-07-05T10:19:34Z

Fiducia: /* Tools */

IT-SDK-GitOps

2021-07-05T10:18:54Z

Fiducia: Created page with "=Notes= * GitOps is same as GitHub-Pages und Jekyll. =Ref.= * https://www.dev-insider.de/was-ist-gitops-a-915663/ * https://www.dev-insider.de/wie-funktioniert-gitops-in-der-p..."

=Notes=
* GitOps is same as GitHub-Pages und Jekyll.
=Ref.=
* https://www.dev-insider.de/was-ist-gitops-a-915663/
* https://www.dev-insider.de/wie-funktioniert-gitops-in-der-praxis-a-928759/
* https://www.dev-insider.de/gitops-tools-in-der-uebersicht-a-943715/

=Tools=
* https://github.com/argoproj/argo-cd
* https://github.com/fluxcd/flux
* https://www.runatlantis.io/
* https://github.com/autoapply/autoapply
* https://flagger.app/
* https://github.com/pusher/faros
* https://github.com/hasura/gitkube
* https://www.kubestack.com/
* https://werf.io/

IT-SDK-Openshift

2021-07-05T09:36:47Z

Fiducia: /* Ref */

==Ref==
* Main-Source: https://docs.openshift.com/container-platform/3.11/welcome/index.html
* CI/CD 1: https://www.youtube.com/watch?v=65BnTLcDAJI
* CI/CD 2: https://www.youtube.com/watch?v=wSFyg6Etwx8
* OKD (OpenShift): https://www.youtube.com/watch?v=ZkFIozGY0IA
* https://hcs-company.com/blog/containers/a-short-comparison-of-openshift-and-cloud-foundry
* Das freie Angebot der Openshift https://learn.openshift.com/
* Das freie Angebot der Kube-Academy https://kube.academy/
* Das freie Angebot "Getting started"-Reihe auf https://container.training/
* https://cri-o.io/
* https://cookbook.openshift.org/
* https://www.okd.io/minishift/

==WOrkshop==
* OpenShift-Starter-Guides: https://redhat-scholars.github.io/openshift-starter-guides/rhs-openshift-starter-guides/4.6/index.html
* dn.dev/openshift-workshop
* https://github.com/redhat-developer-demos/hybrid-cloud/
* https://github.com/openshift-roadshow/
* https://get-cluster-devcluster-stage.apps.member.crt-stage.com/

==CMD==
<pre class="code">
oc new-app <docker-image> --name <name>
oc new-app <image-stream> --name <name>
oc import-image <docker-image> --confirm

oc login -u dev -p dev
oc new-project myproject
oc status
oc new-app --search katalonstudio/katalon
oc new-app katalonstudio/katalon --name kat
oc expose service/katalon
oc get route/katalon
oc get imagestream -o name

oc get all -o name
oc get all -o name
oc describe route/katalon
oc describe imagestream/katalon
oc get all --selector app=katalon -o name
oc delete all --selector app=katalon
</pre>
=y=
*
<pre class="code">
oc new-build --name qshift --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
oc start-build --from-dir . qshift
oc new-app --image-stream airhacks/qshift --name qshift
</pre>

==Introducing Red Hat OpenShift 4==
* Part 1: https://www.redhat.com/en/events/webinar/introduction-kubernetes
** https://onlinexperiences.com/Launch/Event/ShowKey=66363
* Part 2: https://www.redhat.com/en/events/webinar/automated-operations-across-unified-hybrid-cloud
** https://onlinexperiences.com/Launch/Event/ShowKey=66365
* Part 3: https://www.redhat.com/en/events/webinar/building-better-kubernetes-applications-operators-and-openshift
** https://onlinexperiences.com/Launch/Event/ShowKey=66367
==Kostenlose Kurse==
*Openshift: https://www.redhat.com/en/services/training/do080-deploying-containerized-applications-technical-overview
*Openshift: https://www.redhat.com/en/services/training/do092-developing-cloud-native-applications-microservices-architectures
==Free eBooks==
*OpenShift DL: https://assets.openshift.com/hubfs/pdfs/DevOps_with_OpenShift.pdf
*OpenShift DL: https://assets.openshift.com/hubfs/pdfs/Deploying_to_OpenShift.pdf
*OpenShift DL: https://assets.openshift.com/hubfs/pdfs/OpenShift_for_Developers_Red_Hat.pdf
*OpenShift eBook: https://www.openshift.com/deploying-to-openshift/
*OpenShift eBook: https://www.openshift.com/devops-with-openshift/
*OpenShift eBook: https://www.openshift.com/for-developers/

==Resource External==
*OpenShift Github: https://github.com/Cloudwerkstattpublic/openshift-links
*OpenShift Blog: https://blog.openshift.com/
*OpenShift YouTube-Channel: https://www.youtube.com/channel/UCZKMj3YI0wP-kq4QYpaKdEA
*OpenShift Lernumgebung: https://learn.openshift.com/ (über das Gäste-WLAN ist jedoch möglich)
*Docker online Reference: https://docs.docker.com/engine/reference/builder/
*Docker best Practices: https://docs.docker.com/v17.09/engine/userguide/eng-image/dockerfile_best-practices

IT-SDK-Quarkus

2021-06-29T11:22:59Z

Fiducia: /* ref: Roadmap */

=Quarkus=
==OpenShift==
* https://www.youtube.com/watch?v=QxJQMb35RWU
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/maven-tooling
* https://quarkus.io/guides/deploying-to-kubernetes
* https://quarkus.io/guides/deploying-to-openshift
<pre class="code">
oc new-build --name qshift --strategy docker --code . --dockerfile - < src/main/docker/Dockerfile.jvm
oc start-build --from-dir . qshift
oc new-app --image-stream airhacks/qshift --name qshift
</pre>

==ref: Roadmap==
* https://lankydan.dev/building-a-rest-api-with-quarkus
* https://github.com/quarkusio/quarkus-quickstarts
* https://redhat-developer-demos.github.io/quarkus-tutorial/quarkus-tutorial/index.html
* https://quarkiverse.github.io/quarkiverse-docs/quarkus-cxf/dev/server.html
* -------------------------------------------------------
* https://quarkus.io/guides/datasource
* https://quarkus.io/guides/getting-started
* https://quarkus.io/guides/getting-started-reactive
* https://quarkus.io/guides/rest-json
* https://quarkus.io/guides/rest-client
* https://quarkus.io/guides/reactive-sql-clients
* https://quarkus.io/guides/hibernate-orm
* -------------------------------------------------------
* https://quarkus.io/guides/config
* https://quarkus.io/guides/config-reference
* https://quarkus.io/guides/all-config
* https://quarkus.io/guides/maven-tooling
* https://microprofile.io/project/eclipse/microprofile-config
* https://smallrye.io/docs/smallrye-config/index.html
* -------------------------------------------------------
* https://quarkus.io/guides/flyway
* https://quarkus.io/guides/microprofile-graphql
* https://quarkus.io/guides/kubernetes
* https://quarkus.io/quarkus-workshops/super-heroes
* ----------------------------------------------------

==ref: Colletions==
* https://github.com/quarkusio/quarkus/blob/master/integration-tests/flyway/src/main/java/io/quarkus/it/flyway/FlywayFunctionalityResource.java
* https://dzone.com/articles/building-a-rest-api-with-quarkus
* https://www.programcreek.com/java-api-examples/?code=quarkusio%2Fquarkus-quickstarts%2Fquarkus-quickstarts-master
* https://blogs.oracle.com/developers/configuring-the-oracle-jdbc-drivers-with-quarkus
* https://antoniogoncalves.org/2019/06/07/configuring-a-quarkus-application/
* https://dzone.com/articles/build-a-java-rest-api-with-quarkus
* https://dzone.com/articles/quick-guide-to-microservices-with-quarkus-on-opens
* http://www.mastertheboss.com/soa-cloud/quarkus/getting-started-with-quarkus
* https://www.mailing.dzone.com/click.html?x=a62e&lc=Uhy&mc=h&s=hbIX&u=f&z=oIlBEZc&
* https://jaxenter.de/serverless/quarkus-full-stack-framework-87817
<pre class="code">
docker pull maven:3.6-jdk-11-slim
</pre>

==Startup==
<pre class="code">
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create"
------------------------------------------------------------
mvn "io.quarkus:quarkus-maven-plugin:1.12.2.Final:create" \
-DprojectGroupId="net.condolco" \
-DprojectArtifactId="quarkus-app-00" \
-DclassName="init.SayHello" \
-Dpath="/hello" \
-Dextensions="resteasy,resteasy-jackson"
</pre>
<pre class="code">
mvn package # create the project
mvn compile quarkus:dev
mvn quarkus:list-extensions
mvn quarkus:add-extension -Dextensions="hibernate-validator"
mvn quarkus:add-extension -Dextensions="hibernate-*"
</pre>
<pre class="code">
## mode: jvm
mvn clean package -DskipTests
java -jar target/tutorial-app-1.0-SNAPSHOT-runner.jar
</pre>
<pre class="code">
## mode: native
mvn clean package -DskipTests -Pnative
./target/tutorial-app-1.0-SNAPSHOT-runner
</pre>
<pre class="code">
## mode: native contianer
mvn package -DskipTests -Pnative -Dquarkus.native.container-build=true
docker build -f src/main/docker/Dockerfile.native -t example/tutorial-app:1.0-SNAPSHOT .
docker run -it --rm -p 8080:8080 example/tutorial-app:1.0-SNAPSHOT
</pre>

IT-SDK-SRE

2021-06-25T11:40:31Z

Fiducia: /* Notes */

SRE Toolchain
=Containers for Microservices=
* Docker
* Kubernetes
* Swarm
* Apache Mesos
* Podman
=Source Control Tools=
* Git
=CI/CD Tools=
* Jenkins
* CircleCI
* GitLab
* GoCD
* Semaphore
* Concourse

=Data Storage Tools=
* MySQL
* PostgreSQL
* MonogoDB
* Apache Hadoop
* Apache Hive
* Amazon Aurora (MySQL and PostgreSQL-compatible)
* MariaDB (fork from MySQL)

=Configuration Management Tools=
* Ansible
* Chef
* Puppet
* Saltstack
=Monitoring and Observability Tools=
==Metrics Collection Tools==
* Prometheus
* Stackdriver (Google Cloud Operations)
* InfluxDB
* Sensu Go
==Log Aggregation Tools==
* Fluentd
* Sentry
* Logstash
==Distributed Tracing Tools==
* OpenTelemetry
* Jaeger
==Application Performance Monitoring Tools==
* Appdynamics
* New Relic
* Dynatrace
=Dashboarding Tools=
* Grafana
* Stashboard
* Redash
* Metabase
=Incident Management=
* Pagerduty
* Opsgenie
* Squadcast
=NEW-Work=
* AWS, Azure, concourse, Jenkins, Aurora DB, Dynatrace, New Relic, ElasticSearch, Kibana

=Notes=
* APM: application performance management
* ELK Stack: is the acronym for three open source projects: Elasticsearch, Logstash, and Kibana
* ELK Stack/Elastic & New Relic & Datadog & Dynatrace
* Prometheus, Graylog, StoreBox
* concourse-ci: https://concourse-ci.org/
* Terraform and Ansible
* Azure, Terraform, Ansible, concourse-ci, Elasticsearch/Kibana und Dynatrace.
* https://www.youtube.com/watch?v=X9r0sjBWdlA
* https://www.dynatrace.com/news/blog/openstack-monitoring-beyond-the-elastic-stack-part-2/
=Dynatrace=
* https://www.dynatrace.com/support/help/

IT-SDK-Jenkins

2021-06-21T13:11:42Z

Fiducia: /* Jenkinsfile/Pipeline */

=Source=
* src: https://jenkins.io/doc/book/pipeline/syntax/
* src: https://jenkins.io/doc/book/pipeline/jenkinsfile/#using-environment-variables
* src: https://e.printstacktrace.blog/jenkins-pipeline-environment-variables-the-definitive-guide/
* src: https://www.jenkins.io/doc/book/pipeline/jenkinsfile/#using-environment-variables
* ${YOUR_JENKINS_URL}/pipeline-syntax/globals#env

=Docker=
See Docker-Section

=Coding=
<pre class="code">
def username = 'Jenkins'
echo 'Hello Mr. ${username}'
echo "I said, Hello Mr. ${username}"
...
Hello Mr. ${username}
I said, Hello Mr. Jenkins
</pre>

<pre class="code">
environment {
APP = "${env.APP}-${env.BRANCH_NAME}"
}
steps {
sh 'echo "Name=${APP}"'
echo "Running ${APP} on ${env.APP}"
}
</pre>
=Jenkinsfile/Pipeline=
* src: https://jenkins.io/doc/book/pipeline/syntax/
* src: https://www.jenkins.io/doc/book/pipeline/jenkinsfile/#using-environment-variables
<pre class="code">
pipeline {
agent {
label 'nodejs10'
}
environment {
APP = 'application'
VERSION = 't.b.d.'
AWS_ACCESS_KEY_ID = credentials('jenkins-aws-secret-key-id')
}
parameters {
choice(choices: ['greeting' , 'silence'],description: '',name: 'REQUESTED_ACTION')
string(name: 'DEPLOY_ENV', defaultValue: 'staging', description: '')
choice(name: 'CHOICE', choices: ['One', 'Two', 'Three'], description: 'Pick something')
}
options {
buildDiscarder(logRotator(numToKeepStr: '15'))
}
stages {
stage('Environment') {
when {
expression { params.REQUESTED_ACTION == 'greeting' }
}
steps {
echo "Applacation: ${APP} or ${env.APP}"
sh 'echo "Lib-Version: ${LIB_VERSION}"'
echo "##################################"
setVersion()
echo "##################################"
script {
env.VERSION = "init"
echo "Version: ${env.VERSION}"
env.VERSION = "newValue"
echo "Version: ${env.VERSION}"
}
sh 'export AWESOME_FILE=$AWESOME_BUILD/the_file'
sh 'echo $AWESOME_FILE' // But it won't show up here!
// However, in a single sh command it will work.
sh '''
export AWESOME_FILE=$AWESOME_BUILD/the_file
echo $AWESOME_FILE
'''
withEnv(["BUILD_NUMBER=1"]) {
echo "BUILD_NUMBER = ${env.BUILD_NUMBER}" // prints "BUILD_NUMBER = 1"
}
}
}
stage('Build-Angular') {
steps {
//build job: 'test', parameters:[string(name: 'LIB_VERSION', value: "${LIB_VERSION}")], wait: false
}
}
}
}
def setVersion() {
LIB_VERSION = 'Samer'
echo "Lib-Version: ${LIB_VERSION}"
}
</pre>

IT-SDK-Jenkins

2021-06-21T13:09:02Z

Fiducia: /* Source */

=Source=
* src: https://jenkins.io/doc/book/pipeline/syntax/
* src: https://jenkins.io/doc/book/pipeline/jenkinsfile/#using-environment-variables
* src: https://e.printstacktrace.blog/jenkins-pipeline-environment-variables-the-definitive-guide/
* src: https://www.jenkins.io/doc/book/pipeline/jenkinsfile/#using-environment-variables
* ${YOUR_JENKINS_URL}/pipeline-syntax/globals#env

=Docker=
See Docker-Section

=Coding=
<pre class="code">
def username = 'Jenkins'
echo 'Hello Mr. ${username}'
echo "I said, Hello Mr. ${username}"
...
Hello Mr. ${username}
I said, Hello Mr. Jenkins
</pre>

<pre class="code">
environment {
APP = "${env.APP}-${env.BRANCH_NAME}"
}
steps {
sh 'echo "Name=${APP}"'
echo "Running ${APP} on ${env.APP}"
}
</pre>
=Jenkinsfile/Pipeline=
* src: https://jenkins.io/doc/book/pipeline/syntax/
<pre class="code">
pipeline {
agent {
label 'nodejs10'
}
environment {
APP = 'application'
VERSION = 't.b.d.'
}
parameters {
choice(choices: ['greeting' , 'silence'],description: '',name: 'REQUESTED_ACTION')
string(name: 'DEPLOY_ENV', defaultValue: 'staging', description: '')
choice(name: 'CHOICE', choices: ['One', 'Two', 'Three'], description: 'Pick something')
}
options {
buildDiscarder(logRotator(numToKeepStr: '15'))
}
stages {
stage('Environment') {
when {
expression { params.REQUESTED_ACTION == 'greeting' }
}
steps {
echo "Applacation: ${APP} or ${env.APP}"
sh 'echo "Lib-Version: ${LIB_VERSION}"'
echo "##################################"
setVersion()
echo "##################################"
script {
env.VERSION = "init"
echo "Version: ${env.VERSION}"
env.VERSION = "newValue"
echo "Version: ${env.VERSION}"
}
sh 'export AWESOME_FILE=$AWESOME_BUILD/the_file'
sh 'echo $AWESOME_FILE' // But it won't show up here!
// However, in a single sh command it will work.
sh '''
export AWESOME_FILE=$AWESOME_BUILD/the_file
echo $AWESOME_FILE
'''
withEnv(["BUILD_NUMBER=1"]) {
echo "BUILD_NUMBER = ${env.BUILD_NUMBER}" // prints "BUILD_NUMBER = 1"
}
}
}
stage('Build-Angular') {
steps {
//build job: 'test', parameters:[string(name: 'LIB_VERSION', value: "${LIB_VERSION}")], wait: false
}
}
}
}
def setVersion() {
LIB_VERSION = 'Samer'
echo "Lib-Version: ${LIB_VERSION}"
}
</pre>