k8s Cheat Sheet

Contexts

k config get-contexts                       # List all contexts
k config current-context                    # Show current context

Auth

k auth whoami
k auth can-i get pods -as [new_user/group/sa]      # rback testing

Pods

k exec -it pod_name -c container_name -n namespace -- bash   # Exec into a container shell
k logs pod_name -c container_name -n namespace                # View logs for container
k logs --previous pod_name -c container_name -n namespace     # View logs from previous crash
k logs pod_name --all-containers -n namespace                 # View logs from all containers
k top po pod_name --containers -n namespace                   # Show CPU & memory usage per container
k delete po pod_name -n namespace                             # Delete pod

Secrets

kubectl get secret datadog-agent -n namespace -o jsonpath='{.data.api-key}' | base64 -d

Deployments

k rollout restart deploy deploy_name -n namespace   # Restart a deployment

HPA & Events

k describe hpa hpa_name -n namespace                # Describe HPA details
k get ev --field-selector involvedObject.name=obj_name -n namespace   # Get events for specific object

Extras

k get pods -A --no-headers | wc -l        # no headers row
watch "kubectl get pods -A | grep something "    # live watch