Kubernetes Cheat Sheet
Run curl test temporarily
kubectl run --rm mytest --image=yauritux/busybox-curl -itRun wget test temporarily
kubectl run --rm mytest --image=busybox -itRun nginx deployment with 2 replicas
kubectl run my-nginx --image=nginx --replicas=2 --port=80List everything
kubectl get all --all-namespacesList pods with nodes info
kubectl get pod -o wideShow nodes with labels
kubectl get nodes --show-labelsValidate yaml file with dry run
kubectl create --dry-run --validate -f pod-dummy.yamlStart a temporary pod for testing
kubectl run --rm -i -t --image=alpine test-$RANDOM -- shkubectl run shell command
kubectl exec -it mytest -- ls -l /etc/hostsGet system conf via configmap
kubectl -n kube-system get cm kubeadm-config -o yamlExplain resource kubectl explain pods
kubectl explain svcGet all services
kubectl get service --all-namespacesWatch pods
kubectl get pods -n wordpress --watchQuery healthcheck endpoint
curl -L http://127.0.0.1:10250/healthzOpen a bash terminal in a pod
kubectl exec -it storage shCheck pod environment variables
kubectl exec redis-master-ft9ex envEnable kubectl shell autocompletion
echo "source <(kubectl completion bash)" >>~/.bashrc, and reloadGet services sorted by name
kubectl get services –sort-by=.metadata.nameGet pods sorted by restart count
kubectl get pods –sort-by=’.status.containerStatuses[0].restartCount’Get node resource usage
kubectl top nodeGet pod resource usage
kubectl top podGet resource usage for a given pod
kubectl top <podname> --containersList resource utilization for all containers
kubectl top pod --all-namespaces --containers=trueDelete pod
kubectl delete pod/<pod-name> -n <my-namespace>Delete pod by force
kubectl delete pod/<pod-name> --grace-period=0 --forceDelete pods by labels
kubectl delete pod -l env=testDelete deployments by labels
kubectl delete deployment -l app=wordpressDelete all resources filtered by labels
kubectl delete pods,services -l name=myLabelDelete resources under a namespace
kubectl -n my-ns delete po,svc --allDelete persist volumes by labels
kubectl delete pvc -l app=wordpressDelete statefulset only (not pods)
kubectl delete sts/<stateful_set_name> --cascade=falseList all pods
kubectl get podsList pods for all namespace
kubectl get pods -all-namespacesList all critical pods
kubectl get -n kube-system pods -aList pods with more info
kubectl get pod -o wide, kubectl get pod/<pod-name> -o yamlGet pod info
kubectl describe pod/srv-mysql-serverList all pods with labels
kubectl get pods --show-labelsList running pods
kubectl get pods –field-selector=status.phase=RunningGet Pod initContainer status
kubectl get pod --template '{{.status.initContainerStatuses}}' <pod-name>kubectl run command
kubectl exec -it -n “$ns” “$podname” – sh -c “echo $msg >>/dev/err.log”