Goal

Observe a broken rolling update and recover it with a rollback.

What Is Done

First, a working Deployment is rolled out. Then a full update manifest with an intentionally broken readiness probe is applied.

Typical Commands

kubectl apply -f manifests/00-working.yaml
kubectl rollout status deployment/rollout-demo -n rollout-lab
kubectl apply -f manifests/90-broken-update.yaml
kubectl rollout history deployment/rollout-demo -n rollout-lab
kubectl rollout undo deployment/rollout-demo -n rollout-lab

Validate Success

• The first version becomes ready.
• The broken update remains stuck during rollout.
• rollout undo restores the previous version.

Common Mistakes

• rollout status is run without a timeout and blocks for a long time.
• The broken probe is mistaken for an image issue.
• revisionHistoryLimit is too low for useful rollback exercises.