DevOps: What is the kubectl rollout?

1# Status
2kubectl rollout status deployment/myapp
3kubectl rollout history deployment/myapp
4kubectl rollout history deployment/myapp --revision=2
5
6# Update
7kubectl set image deployment/myapp myapp=myapp:2.0
8kubectl rollout restart deployment/myapp
9
10# Rollback
11kubectl rollout undo deployment/myapp
12kubectl rollout undo deployment/myapp --to-revision=2
13
14# Pause/resume
15kubectl rollout pause deployment/myapp
16kubectl rollout resume deployment/myapp
17
18# Scaling
19kubectl scale deployment/myapp --replicas=5
20
21# View current status
22kubectl rollout status deployment/myapp
23kubectl get deployment myapp -o yaml
24kubectl get rs  # ReplicaSets