k8s-cheatsheet

Work with cluster and resources using kubectl

Here i suggest different scenario with resources in cluster(cloud-managed, bare-metal and local such as minikube) Before starting work with cluster you can see on this article

Get all pods with same release

Usually metadata consists field labels and one of popular labels is release

$>kubectl get po -o=jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.metadata.labels.release}{"\n"}{end}'

The expression selecting name of each pod and release from .metadata.labels

Get all pods with same release

$>kubectl get po -l release=<my-release>

Show all pods deployed on same node

$>kubectl get po --field-selector spec.nodeName=<node-name>

The expression selecting all pods deployed on node with name <node_name>

For determination all nodes in cluster you can run

$>kubectl get nodes

Often you can get error Error from server (Forbidden): nodes is forbidden: because user in kubeconfig doesn't have permissions on some commands

Show all pods with Failed phase

kubectl get po --field-selector status.phase=Failed --all-namespaces