Kubernetes Commands

Create/run

• kubectl run busybox –rm -it –image=busybox /bin/sh
• kubectl run nginx –image=nginx –replicas=2
• kubectl run nginx –image=nginx –dry-run
• kubectl create -f a-file.yml
• kubectl create deployment kubernetes-bootcamp –image=gcr.io/google-samples/kubernetes-bootcamp:v1

Get info

• kubectl -h or –help
• kubectl $command –help
• kubectl cluster-info
• kubectl get nodes
• kubectl get pods -o wide –all-namespaces
• kubectl get po -o yaml
• kubectl get pod -l app=ratings -o jsonpath='{.items[0].metadata.name}'
• kubectl get pods -o go-template –template ‘{{range.items}}{{.metadata.status}}{{"\n"}}{{end}}’
• kubectl get deployments
• kubectl get services
• kubectl get namespace
• kubectl get pv
• kubectl get statefulsets
• kubectl describe resName
• kubectl explain resName
• kubectl proxy and curl http://localhost:8001/version

Trouble shooting

• kubectl logs -p $pod -c $container
• kubectl logs –since=1h nginx
• kubectl exec -it myPodName -c containerNameInMyPod /bin/sh

Apply changes

• kubectl apply -f a-file.yml
• kubectl delete -f a-file.yml
• kubectl scale –replicas=3 deployment/nginx