Google Kubernetes Engines offers us the seamless experience of running Kubernetes; it also makes Kubernetes administration so easy. Depending on the expected peak time, we might want to scale the Kubernetes nodes out or in. Alternatively, we could use Autoscaler to do auto-scaling for the nodes. Kubernetes is an evolving platform. The release pace is fast. We might want to upgrade the cluster version from time to time, which is very easy to do. We could also use the Autoupgrade feature to upgrade the cluster by enabling automatically schedule feature in GKE. Let's see how to do it.