Labels

• Add a label : kubectl label pod dev3 app=nginx
• Delete the label: kubectl label pod dev3 app-
• Show labels: kubectl get pods --show-labels
• List pods with a specific label: kubectl get pods --selector=app=nginx --show-labels

Annotations:

• Add an annotation : kubectl annotate pod dev3 app=nginx

Deployment

• Update the image - kubectl set image deployment webapp nginx=nginx:1.17.4
• Update to a specific version - kubectl rollout undo deploy webapp --to-revision=3
• Get history of a specific version - kubectl rollout history deploy webapp --revision=7
• Pause the rollout - kubectl rollout pause deploy webapp
• Autoscale - kubectl autoscale deployment webapp --min=2 --max=5 --cpu-percent=80

Job

• kubectl create job hello-job --image=busybox --dry-run -o yaml -- echo "Hello I am from job"

Events

• kubectl get events --sort-by=.metadata.creationTimestamp

Expose

• kubectl expose po nginx --name=svc1 --port=80 --target-port=9376
• kubectl expose deployment nginx --name=svc1 --type=LoadBalancer

Set namespace

• We can switch the namespace using the following command - kubectl config set-context $(kubectl config current-context) --namespace=<namespace_name>