Let's dig a little bit deeper into our new cluster and its core services. By default, machines are named with the kubernetes- prefix. We can modify this using $KUBE_GCE_INSTANCE_PREFIX before a cluster is spun up. For the cluster we just started, the master should be named kubernetes-master. We can use the gcloud command-line utility to SSH into the machine. The following command will start an SSH session with the master node. Be sure to substitute your project ID and zone to match your environment:
$ gcloud compute ssh --zone "<your gce zone>" "kubernetes-master"$ gcloud compute ssh --zone "us-central1-b" "kubernetes-master"Warning: Permanently added 'compute.5419404412212490753' (RSA) to the list of known ...