1 2 3 4 5 6 7 8
roles: - [mon.a, mgr.x, mds.a, mds.d] - [mon.b, mgr.y, mds.b, mds.e] - [mon.c, mgr.z, mds.c, mds.f] - [osd.0] - [osd.1] - [osd.2] - [client.0]