--- /dev/null
+roles:
+- [mon.a, mgr.x, osd.0, osd.1, osd.2, osd.3, mds.a, mds.b, client.1, client.2, client.3]
+- [client.0, osd.4, osd.5, osd.6, osd.7]
+openstack:
+- volumes: # attached to each instance
+ count: 2
+ size: 10 # GB
+log-rotate:
+ ceph-mds: 10G
+ ceph-osd: 10G