Google Cloud Platform Compute Engine offers a robust Disk type template. In my case, I have the default standard persistent disk image. The template is based on the previously created cluster.
A look at the Disks section of the Compute Engine on GCP shows the very basic disks chosen and in use for this simple walk through. Note that cluster instance permissions and snapshots of the cluster can be set up in this section of Compute Engine.
Moving further along in the Compute Engine product offering, we can see the Metadata for the cluster. Do not be concerned for my Kubernetes security, as this is only part of the SSH keys ;>