kubespray/tests/templates/inventory-gce.j2

node1 ansible_ssh_host={{gce.instance_data[0].public_ip}}
node2 ansible_ssh_host={{gce.instance_data[1].public_ip}}
node3 ansible_ssh_host={{gce.instance_data[2].public_ip}}

[kube-master]
node1
node2

[kube-node]
node1
node2
node3

[etcd]
node1
node2

[k8s-cluster:children]
kube-node
kube-master