roles:
- [c1.mon.a, c1.mgr.x, c1.osd.0, c1.osd.1, c1.osd.2, c1.client.0, c1.client.1]
- [c2.mon.a, c2.mgr.x, c2.osd.0, c2.osd.1, c2.osd.2, c2.client.0, c2.client.1]