[all:vars]
host_domain=domain.local

[pve:vars]
host_domain=core.domain.local

[ceph]
ceph[1:3]

[pve]
pve[1:5]

[infra:children]
ceph
pve

[servers]
server1   ansible_host=10.0.0.1
server1   ansible_host=10.0.0.2
server3   ansible_host=10.0.0.3