Kubernetes Commands
| Command | Description |
|---|---|
kubectl patch crd/<CRD_NAME> -p '{"metadata":{"finalizers":[]}}' --type=merge |
To delete the orphaned CRD (CustomResourceDefinition) |
| Click here | Force delete namespace that stuck in finalizer issue |
kubectl delete pod <pod_name> --now or kubectl delete pods <pod_name> --grace-period=0 --force |
To delete the POD immediately without waiting |
kubectl rollout status deployment/<deployment_name> |
Watches the deployment and logs all the status changes |
kubectl rollout undo deployment/<deployment_name> |
Rolls back the recent deployment |
kubectl get --raw /metrics \| grep apiserver_storage_objects |
How many things do I have in etcd |
kubectl get --raw /metrics \| grep etcd.*.sum |
Is etcd being slow |
oc patch pv/<pv_name> --type json -p $'- op: remove\n path: /spec/claimRef' |
To reclaim the PV after the pod is deleted * Give double space after the \n |
oc patch pvc <pvc_name> -p '{"spec":{"volumeName": <volume_name>}' |
To change the volume name in existing PVC |
kubectl patch function <function_name> -p '{"metadata":{"finalizers":[]}}' --type=merge |
If you have Kubeless function deployed and function not getting deleted |
kubectl get {kind}.{version}.{group} |
Query the resources using its GVK(R) |
kubectl explain {kind} --api-version={desired api version} |
To get the kubectl explain docs for an object at the desired apiVersion |