kubectl example commands

Set context in kube-system namespace

kubectl set-context context_name --namespace kube-system

Get pods with labels

kubectl get pods --show-labels

Get all resources

kubectl get all

Get multiple resources

kubectl get po,svc,pv,pvc,deploy,rs

Output resource without creationTimestamp, selfLink, uid, ResourceVersion, etc.

kubectl get deployment deployment_name -o yaml --export

Create service by exposing port

kubectl expose rc nginx --port=80 --target-port=8000

Create service for pod

kubectl expose pod pod_name --port=444 --name=frontend

Create ClusterIP service

kubectl create service clusterip service_name --tcp=5678:8080

Set deployment's nginx container image to specific version and it's busybox container to busybox

kubectl set image deployment/nginx busybox=busybox nginx=nginx:1.9.1

Update all deployments and replicasets using nginx to version 1.9.1

kubectl set image deployments,rc nginx=nginx:1.9.1 --all

Update image of all containers of deamonset

kubectl set image deamonset ds_name *=nginx:1.9.1

Create nginx deployment

kubectl run nginx --image=nginx

Create nginx pod

kubectl run nginx --image=nginx --restart=Never

Create nginx job

kubectl run nginx --image=nginx --restart=OnFailure

Create nginx cronjob

kubectl run nginx --image=nginx --restart=OnFailure --schedule="* * * * *"

Easily create pod resource yaml file

kubectl run nginx --image=nginx --restart=Never --port=80 --namespace=my_ns --command \
  --serviceaccount=ma_sa --env=HOSTNAME=local --labels=unit=finance,env=dev \
  --requests='cpu=100m,memory=256Mi' --limits='cpu=200m,memory=512Mi' \
  --dry-run -o yaml -- /bin/sh -c 'echo hello'

Easily create deployment resource

kubectl run deploy_name --replicas=2 --labels=run=load-balancer-example --image=busybox --port=8080

Easily create service

kubectl expose deyployment frontend --type=NodePort --name=frontend-service --port=6262 --target-port=8080

Easily set service account for deployment

kubectl set serviceaccount deployment frontend user_name

Easily create service resource

kubectl create service clusterip service_name --tcp=5678:8080 --dry-run -o yaml

Rollout

kubectl rollout status
kubectl rollout history
kubectl rollout undo

Browse documentation

kubectl explain --api-version="batch/v1beta1" cronjobs.spec