ceph/doc/rados/deployment/ceph-deploy-mds.rst

   1 ============================
   2  Add/Remove Metadata Server
   3 ============================
   4
   5 With ``ceph-deploy``, adding and removing metadata servers is a simple task. You
   6 just add or remove one or more metadata servers on the command line with one
   7 command.
   8
   9 See `MDS Config Reference`_ for details on configuring metadata servers.
  10
  11
  12 Add a Metadata Server
  13 =====================
  14
  15 Once you deploy monitors and OSDs you may deploy the metadata server(s). ::
  16
  17         ceph-deploy mds create {host-name}[:{daemon-name}] [{host-name}[:{daemon-name}] ...]
  18
  19 You may specify a daemon instance a name (optional) if you would like to run
  20 multiple daemons on a single server.
  21
  22
  23 Remove a Metadata Server
  24 ========================
  25
  26 Coming soon...
  27
  28 .. If you have a metadata server in your cluster that you'd like to remove, you may use
  29 .. the ``destroy`` option. ::
  30
  31 ..      ceph-deploy mds destroy {host-name}[:{daemon-name}] [{host-name}[:{daemon-name}] ...]
  32
  33 .. You may specify a daemon instance a name (optional) if you would like to destroy
  34 .. a particular daemon that runs on a single server with multiple MDS daemons.
  35
  36 .. .. note:: Ensure that if you remove a metadata server, the remaining metadata
  37    servers will be able to service requests from CephFS clients. If that is not
  38    possible, consider adding a metadata server before destroying the metadata
  39    server you would like to take offline.
  40
  41
  42 .. _MDS Config Reference: ../../../cephfs/mds-config-ref