Kubectl Commands
Information Commands
| Command | Description |
|---|---|
kubectl cluster-info | Display Cluster Info |
| kubectl config view | Display Config |
kubectl get pods | List all running pods |
| kubectl get services | List all services |
| kubectl get nodes | List all nodes |
kubectl get deployments | Deployments view |
| kubectl get rc | List replication controllers |
kubectl get pods -o wide | List all pods in ps output format with more information (such as node name). |
kubectl get pods --all-namespaces | List all pods in all namespaces |
kubectl logs <pod> | Display the logs for a service |
| kubectl logs -f <pod> | Display the logs for a service |
kubectl logs -n kube-system <system_pod> | Display logs for a system pod |
| Log into a system pod |
| kubectl delete pod <POD> --grace-period=0 --force | Force delete a pod |
kubectl get psp | Get Pod Security Policies |
| kubectl edit deployment <deployment> | Edit an object directly. |
Actions
| Command | Description |
|---|---|
kubectl port-forward service/<SERVICE> <LOCAL_PORT>:<SERVICE_PORT> | Port Forward / Proxy to a Service See: kubectl port-forward --help $ kubectl port-forward service/kafka-cp-kafka 9092:9092 |
| Allow proxying from any host listening on all interfaces |
| kubectl create -f <yaml file> | Create a deployment |
| kubectl delete -f <yaml file> | Delete a deployment |
| kubectl apply -f <yaml file> | Update a deployment |
| kubectl edit -f <yaml file> | Edit and update a deployment |
| kubectl edit deployment <deployment> | Edit an object directly. |
kubectl exec -it <pod> bash | log into a pod |
kubectl scale --replicas=3 deployment/<deployment> | Scale the number of pods for a deployment $ kubectl scale --replicas=3 deployment/cloudservice |
| kubectl scale --replicas=1 -f <yaml file> | Scale the number of pods referenced in a yaml file |
kubectl delete deployment <deployment> | Delete all pods for a deployment |
kubectl delete pod <pod instance> | Delete a pod |
kubectl delete pvc --all | Delete all pvc |
kubectl expose deployment cloudservice --type=LoadBalancer --name=cloud | Expose deployment |
| kubectl patch deployment notification-controller --patch "$(cat patch.yaml)" | Apply a patch |
| kubectl rollout restart deployment/myapp | Redeploy all pods for a deployment. Helpful after making a configmap change. |
PVC stuck in status “Terminating” Fix
kubectl patch pvc {PVC_NAME} -p '{"metadata":{"finalizers":null}}'
Can also be applied to pv.
Minikube Commands
| Command | Description |
|---|---|
| minikube start | Start |
| minikube stop | Stop |
| minikube dashboard | Display dashboard |
| minikube ssh | log into minikube |
| log into minikube |
| cat ~/.minikube/machines/minikube/config.json | View minikube config |
ssh -i ~/.minikube/machines/minikube/id_rsa docker@$(minikube ip) -R 5000:localhost:5000 | SSH into minikube and setup a port forwarding to your local docker registry. |
| minikube ip | get ip of minikube |
| minikube service <service> | Open browser to exposed service |
Reference
| Reference | URL |
|---|---|
| Cheatsheet | https://kubernetes.io/docs/reference/kubectl/cheatsheet/ |
| Kubectl for docker users | https://kubernetes.io/docs/reference/kubectl/docker-cli-to-kubectl/ |
| Expose external ip | https://kubernetes.io/docs/tutorials/stateless-application/expose-external-ip-address/ |