Kubernetes

Deployments Commands

Deploy and manage applications with Kubernetes Deployments. Learn rolling updates, rollbacks, scaling strategies, and how to maintain application availability during updates.

12 commands

Pro Tips

Use 'kubectl rollout status deployment/myapp' to watch deployment progress in real-time.

Set 'kubectl rollout undo deployment/myapp' to quickly rollback a problematic deployment.

Use '--record' flag when applying changes to track revision history for rollbacks.

Common Mistakes

Don't scale deployments to 0 replicas in production without understanding the impact on availability.

Set resource limits and requests to prevent pods from consuming too many cluster resources.

Commands

List deployments

$ kubectl get deployments

List all deployments in namespace.

Describe deployment

$ kubectl describe deployment <name>

Show detailed deployment information.

Create deployment

$ kubectl create deployment <name> --image=<image>

Create a new deployment.

Scale deployment

$ kubectl scale deployment <name> --replicas=3

Scale deployment to specified replicas.

Update deployment image

$ kubectl set image deployment/<name> <container>=<image>:<tag>

Update container image in deployment.

Rollout status

$ kubectl rollout status deployment/<name>

Monitor deployment rollout progress.

Rollout history

$ kubectl rollout history deployment/<name>

View deployment revision history.

Rollback deployment

$ kubectl rollout undo deployment/<name>

Rollback to previous deployment version.

Rollback to specific revision

$ kubectl rollout undo deployment/<name> --to-revision=2

Rollback to a specific revision number.

Restart deployment

$ kubectl rollout restart deployment/<name>

Trigger a rolling restart of all pods.

Pause rollout

$ kubectl rollout pause deployment/<name>

Pause an ongoing deployment rollout.

Resume rollout

$ kubectl rollout resume deployment/<name>

Resume a paused deployment rollout.