ceph/doc/cephadm/services/mds.rst

   1 ===========
   2 MDS Service
   3 ===========
   4
   5
   6 .. _orchestrator-cli-cephfs:
   7
   8 Deploy CephFS
   9 =============
  10
  11 One or more MDS daemons is required to use the :term:`CephFS` file system.
  12 These are created automatically if the newer ``ceph fs volume``
  13 interface is used to create a new file system. For more information,
  14 see :ref:`fs-volumes-and-subvolumes`.
  15
  16 For example:
  17
  18 .. prompt:: bash #
  19
  20   ceph fs volume create <fs_name> --placement="<placement spec>"
  21
  22 where ``fs_name`` is the name of the CephFS and ``placement`` is a
  23 :ref:`orchestrator-cli-placement-spec`.
  24
  25 For manually deploying MDS daemons, use this specification:
  26
  27 .. code-block:: yaml
  28
  29     service_type: mds
  30     service_id: fs_name
  31     placement:
  32       count: 3
  33
  34
  35 The specification can then be applied using:
  36
  37 .. prompt:: bash #
  38
  39    ceph orch apply -i mds.yaml
  40
  41 See :ref:`orchestrator-cli-stateless-services` for manually deploying
  42 MDS daemons on the CLI.
  43
  44 Further Reading
  45 ===============
  46
  47 * :ref:`ceph-file-system`
  48
  49