[controller]
host1 ansible_host=10.1.0.50 ansible_user=root ansible_ssh_pass=root
host2 ansible_host=10.1.0.51 ansible_user=root ansible_ssh_pass=root

[compute]
host4 ansible_host=10.1.0.53 ansible_user=root ansible_ssh_pass=root
host5 ansible_host=10.1.0.54 ansible_user=root ansible_ssh_pass=root

[nodes:children]
controller
compute