ceph mgr module ls
ceph mgr module enable balancer
ceph balancer on
ceph balancer mode crush-compat
ceph config-key set “mgr/balancer/max_misplaced”: “0.01”
ceph config-key dump
ceph balancer status
ceph balancer eval
ceph balancer optimize myplan
ceph balancer eval myplan
ceph balancer show myplan
ceph balancer execute myplan
ceph balancer reset
