Rollback to previous version in Kubernetes - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a rollback in Kubernetes?

A rollback in Kubernetes means returning a deployment to a previous stable version when the current version has issues.

beginner

Which command rolls back a deployment to its previous version?

kubectl rollout undo deployment/

intermediate

How can you check the rollout history of a deployment?

Use the command: kubectl rollout history deployment/ to see past versions and revisions.

intermediate

What happens if you run 'kubectl rollout undo' without specifying a revision?

Kubernetes rolls back the deployment to the immediately previous revision by default.

intermediate

How do you rollback to a specific revision number?

Use: kubectl rollout undo deployment/ --to-revision=

What command shows the rollout status of a deployment?

A kubectl get pods

B kubectl rollout status deployment/<deployment-name>

C kubectl describe deployment

D kubectl logs deployment/<deployment-name>

The command 'kubectl rollout status deployment/' shows the current rollout status.

What does 'kubectl rollout undo deployment/myapp' do?

A Rolls back 'myapp' deployment to the previous version

B Deletes the 'myapp' deployment

C Updates 'myapp' deployment to the latest version

D Shows logs of 'myapp' deployment

This command rolls back the deployment named 'myapp' to its previous version.

How do you see all previous revisions of a deployment?

A kubectl rollout history deployment/<deployment-name>

B kubectl get revisions deployment/<deployment-name>

C kubectl describe pods

D kubectl get deployments

The 'kubectl rollout history' command lists all past revisions of a deployment.

If you want to rollback to revision 3, which command should you use?

A kubectl undo deployment/<deployment-name> revision 3

B kubectl rollback deployment/<deployment-name> revision=3

C kubectl rollout undo deployment/<deployment-name> --to-revision=3

D kubectl revert deployment/<deployment-name> 3

The correct syntax to rollback to a specific revision is using '--to-revision' flag.

What is the default behavior of 'kubectl rollout undo' if no revision is specified?

A Rollback to the latest revision

B Rollback to the first revision

C No rollback happens

D Rollback to the previous revision

By default, it rolls back to the immediately previous revision.

Explain how to rollback a Kubernetes deployment to a previous version and how to check its history.

Think about commands to undo and to see past versions.

Describe the steps and commands to rollback to a specific revision number in Kubernetes.

Focus on how to target a specific past version.