Add one or more Node Pools to your cluster. A node pool is a set of virtual machines configured identically to your Linux host. However, each node in the pool also has additional Kubernetes master and worker components installed.

> Notes:

> - After you create each node template, you can use it to create additional node pools.
> - Each Kubernetes role (i.e. `etcd`, `Control`, and `Worker`) must be filled. You can either apply all three roles to one pool or spread them around.
> - Ideally, you should have at least three `etcd` nodes so that your cluster can fail over to another if a etcd node goes down.