List Of Kubernetes Commands

1. Pods

$ kubectl get pods
$ kubectl get pods --all-namespaces
$ kubectl get pod monkey -o wide
$ kubectl get pod monkey -o yaml
$ kubectl describe pod monkey

2. Create Deployments

Create single deployment:
$ kubectl run monkey --image=monkey --record

3. Scaling PODs

$ kubectl scale deployment/POD_NAME --replicas=N

4. POD Upgrade and history

List history of deployments:
$ kubectl rollout history deployment/DEPLOYMENT_NAME

Jump to specific revision:
$ kubectl rollout undo deployment/DEPLOYMENT_NAME --to-revision=N

5. Services

List services:
$ kubectl get services

Expose PODs as services (creates endpoints)
$ kubectl expose deployment/monkey --port=2001 --type=NodePort

6. Volumes

List Persistent Volumes and Persistent Volumes Claims:
$ kubectl get pv
$ kubectl get pvc

6. Secrets

List Persistent Volumes and Persistent Volumes Claims:
$ kubectl get secrets
$ kubectl create secret generic --help
$ kubectl create secret generic mysql --from-literal=password=root
$ kubectl get secrets mysql -o yaml

7. ConfigMaps

List Persistent Volumes and Persistent Volumes Claims:
$ kubectl create configmap foobar --from-file=config.js
$ kubectl get configmap foobar -o yaml

8. DNS

List DNS-PODs:
$ kubectl get pods --all-namespaces |grep dns

Check DNS for pod nginx (assuming a busybox POD/container is running)
$ kubectl exec -ti busybox -- nslookup nginx
Note: kube-proxy running in the worker nodes manage services and set iptables rules to direct traffic.

9. Ingress

List DNS-PODs:
$ kubectl get ingress
$ kubectl expose deployment ghost --port=2368

10. Horizontal Pod Autoscaler

When heapster runs:
$ kubectl get hpa
$ kubectl autoscale --help

11. DaemonSets

$ kubectl get daemonsets
$ kubectl get ds

12. Scheduler

NodeSelector based policy:
$ kubectl label node minikube foo=bar

Node Binding through API Server:
$ kubectl proxy
$ curl -H "Content-Type: application/json" -X POST --data @binding.json http://localhost:8001/api/v1/namespaces/default/pods/foobar-sched/binding

13. Taints and Tolerations

NodeSelector based policy:
$ $ kubectl taint node master foo=bar:NoSchedule

14. Troubleshooting

$ kubectl describe
$ kubectl logs
$ kubectl exec
$ kubectl get nodes --show-labels
$ kubectl get events

15. Role Based Access Control

$ kubectl create role fluent-reader --verb=get --verb=list --verb=watch --resource=pods
$ kubectl create rolebinding foo --role=fluent-reader --user=minikube
$ kubectl get rolebinding foo -o yaml