Kubectl Rollout — Restart, Status, and Undo

# Trigger a rolling restart (without config change)
kubectl rollout restart deployment/api-server -n production

# Watch rollout status
kubectl rollout status deployment/api-server -n production

# View rollout history
kubectl rollout history deployment/api-server

# View details of a specific revision
kubectl rollout history deployment/api-server --revision=3

# Rollback to previous version
kubectl rollout undo deployment/api-server

# Rollback to a specific revision
kubectl rollout undo deployment/api-server --to-revision=2

# Pause a rollout (for canary-style verification)
kubectl rollout pause deployment/api-server

# Resume a paused rollout
kubectl rollout resume deployment/api-server

# Scale deployment
kubectl scale deployment/api-server --replicas=5

# Update image (triggers rolling update)
kubectl set image deployment/api-server \
  api=registry.example.com/api-server:1.3.0

# Quick checks during rollout
kubectl get pods -l app=api-server -w  # watch pods
kubectl describe deployment api-server | grep -A5 Conditions
kubectl top pods -l app=api-server     # resource usage