what is the command to see all the deployment history ?
what is the command to roll back to a previous revision?
kubectl rollout undo deployment [name] - - to revision=#
by default how many number of pods does deployment have running at all times?
at least 25% (max unavailable)
scale a deployment.
kubectl scale deployment [name] - -replicas=10
change the current image.
kubectl set image deployment [name] cont name=new image