check below page.
https://docs.openshift.org/latest/install_config/install/advanced_install.html#single-master
create hosts file
| Host Name | Infrastructure Component to Install |
|---|---|
| centos01 | Master and node |
| centos01 | etcd |
| centos02 | Node |
| centos03 | Node |
[root@centos01 ~]# cat hosts
[OSEv3:children]
masters
nodes
[OSEv3:vars]
ansible_ssh_user=root
deployment_type=origin
[masters]
centos01
[etcd]
centos01
[nodes]
centos01 openshift_node_labels="{'region': 'infra', 'zone': 'default'}"
centos02 openshift_node_labels="{'region': 'primary', 'zone': 'east'}"
centos03 openshift_node_labels="{'region': 'primary', 'zone': 'west'}"
[root@centos01 ~]#
