roles:
- [mon.a, mon.b, mon.c, mgr.x, mds.a, osd.0, osd.1, osd.2, osd.3]
- [client.1]
- [client.0]

openstack:
- volumes: # attached to each instance
    count: 3
    size: 10 # GB

log-rotate:
  ceph-mds: 10G
  ceph-osd: 10G