View the status of a rollout with
kubectl rollout status deployment/my-deployment

View the history of a rollout with kubectl rollout history deployment/my-deployment

Deployment Strategy

stratagyType

• Recreate: Destroy all at once then bring up new ones. Application goes down
• Rolling Update: Bring pod down and replace it one at a time (or whatever burst is set to). Application does not go down

Describe the deployment and look for StrategyType to determine the strategy that is being used for rollouts

Upgrade

• Edit the source yaml and use kubectl apply -f my-deployment.yaml to upgrade the app.
• Can use kubectl set image deployment/my-deployment <container-name> =nginx:1.9.1 to directly change the image being run. Note: this does not change the source yaml file.

Undo Rollout

Upgrading a deployment creates a new replicaset, the old replicaset has its replicas set to 0

To undo a rollout kubectl rollout undo deployment/my-deployment This sets the new replicaset replicas to 0 and the old one to the desired amount. Use kubectl get replicasets to view them