Ref.
ServiceTypes
- ClusterIP: Service is reachableonly from within the cluster.
- NodePort: Service is reachable from outside the cluster.
- LoadBalancer: t.b.d.
- ExternalName: t.b.d.
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
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
minikube
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
