okd/playbooks/byo/openshift-cluster/cluster_hosts.yml

---
g_etcd_hosts:   "{{ groups.etcd | default([]) }}"

g_lb_hosts:     "{{ groups.lb | default([]) }}"

g_master_hosts: "{{ groups.masters | default([]) }}"

g_new_master_hosts: "{{ groups.new_masters | default([]) }}"

g_node_hosts:   "{{ groups.nodes | default([]) }}"

g_new_node_hosts: "{{ groups.new_nodes | default([]) }}"

g_nfs_hosts:   "{{ groups.nfs | default([]) }}"

g_all_hosts:    "{{ g_master_hosts | union(g_node_hosts) | union(g_etcd_hosts)
                    | union(g_lb_hosts) | union(g_nfs_hosts)
                    | union(g_new_node_hosts)| union(g_new_master_hosts)
                    | default([]) }}"