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62 lines
1.2 KiB
ReStructuredText
62 lines
1.2 KiB
ReStructuredText
===========
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MDS Service
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===========
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.. _orchestrator-cli-cephfs:
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Deploy CephFS
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=============
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One or more MDS daemons is required to use the :term:`CephFS` file system.
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These are created automatically if the newer ``ceph fs volume``
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interface is used to create a new file system. For more information,
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see :ref:`fs-volumes-and-subvolumes`.
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For example:
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.. prompt:: bash #
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ceph fs volume create <fs_name> --placement="<placement spec>"
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where ``fs_name`` is the name of the CephFS and ``placement`` is a
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:ref:`orchestrator-cli-placement-spec`. For example, to place
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MDS daemons for the new ``foo`` volume on hosts labeled with ``mds``:
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.. prompt:: bash #
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ceph fs volume create foo --placement="label:mds"
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You can also update the placement after-the-fact via:
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.. prompt:: bash #
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ceph orch apply mds foo 'mds-[012]'
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For manually deploying MDS daemons, use this specification:
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.. code-block:: yaml
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service_type: mds
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service_id: fs_name
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placement:
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count: 3
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label: mds
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The specification can then be applied using:
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.. prompt:: bash #
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ceph orch apply -i mds.yaml
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See :ref:`orchestrator-cli-stateless-services` for manually deploying
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MDS daemons on the CLI.
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Further Reading
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===============
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* :ref:`ceph-file-system`
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