Question
In kubernets, explain in detail what happens, by default, when you do a rolling update via the "kubectl set image" command?
Answer
One old pod is taken down and a whole new pod is created in its place with the update image, this continues until all old pods are replaced with new pods with the new image. By default 1 pod is taken down at a time at most, and 1 new one created at most at a time, but this is configurable.