Ceph » mgr

$ ./bin/ceph versions

• DEVELOPER MODE: setting PATH, PYTHONPATH and LD_LIBRARY_PATH ***
  2020-10-26T01:12:22.463-0400 7fb3cda7c700 -1 WARNING: all dangerous and experimental features are enabled.
  2020-10-26T01:12:22.488-0400 7fb3cda7c700 -1 WARNING: all dangerous and experimental features are enabled. {
  "mon": {
  "ceph version 13.0.0-38815-g79e5cf2d0e (79e5cf2d0e17bb3d79e2967c46aba5ea01606f2c) pacific (dev)": 1
  },
  "mgr": {
  "ceph version 13.0.0-38815-g79e5cf2d0e (79e5cf2d0e17bb3d79e2967c46aba5ea01606f2c) pacific (dev)": 1
  },
  "osd": {
  "ceph version 13.0.0-38815-g79e5cf2d0e (79e5cf2d0e17bb3d79e2967c46aba5ea01606f2c) pacific (dev)": 3
  },
  "mds": {
  "ceph version 13.0.0-38815-g79e5cf2d0e (79e5cf2d0e17bb3d79e2967c46aba5ea01606f2c) pacific (dev)": 3
  },
  "overall": {
  "ceph version 13.0.0-38815-g79e5cf2d0e (79e5cf2d0e17bb3d79e2967c46aba5ea01606f2c) pacific (dev)": 8
  }
  }

$ ./bin/ceph mgr module ls|jq '.always_on_modules,.enabled_modules'

• DEVELOPER MODE: setting PATH, PYTHONPATH and LD_LIBRARY_PATH ***
  2020-10-26T01:12:51.835-0400 7f6063e53700 -1 WARNING: all dangerous and experimental features are enabled.
  2020-10-26T01:12:51.874-0400 7f6063e53700 -1 WARNING: all dangerous and experimental features are enabled.
  [
  "balancer",
  "crash",
  "devicehealth",
  "orchestrator",
  "pg_autoscaler",
  "progress",
  "rbd_support",
  "status",
  "telemetry",
  "volumes"
  ]
  [
  "iostat",
  "restful"
  ]

$ ./bin/ceph mgr module disable balancer

• DEVELOPER MODE: setting PATH, PYTHONPATH and LD_LIBRARY_PATH ***
  2020-10-26T01:13:24.508-0400 7f603ae65700 -1 WARNING: all dangerous and experimental features are enabled.
  2020-10-26T01:13:24.554-0400 7f603ae65700 -1 WARNING: all dangerous and experimental features are enabled.
  Error EINVAL: module 'balancer' cannot be disabled (always-on)