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9f1ad4db54
- Add note to docs indicating that CephFS is not recommended for production datasets. - Add note to docs indicating that running CephFS with multiple MDS servers is not currently recommended. This fixes issue #5797 http://tracker.ceph.com/issues/5797 Signed-off-by: Scott Devoid <devoid@anl.gov>
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1.6 KiB
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47 lines
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============================
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Add/Remove Metadata Server
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============================
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With ``ceph-deploy``, adding and removing metadata servers is a simple task. You
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just add or remove one or more metadata servers on the command line with one
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command.
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.. important:: You must deploy at least one metadata server to use CephFS.
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There is experimental support for running multiple metadata servers.
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Do not run multiple metadata servers in production.
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See `MDS Config Reference`_ for details on configuring metadata servers.
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Add a Metadata Server
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=====================
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Once you deploy monitors and OSDs you may deploy the metadata server(s). ::
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ceph-deploy mds create {host-name}[:{daemon-name}] [{host-name}[:{daemon-name}] ...]
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You may specify a daemon instance a name (optional) if you would like to run
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multiple daemons on a single server.
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Remove a Metadata Server
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========================
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Coming soon...
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.. If you have a metadata server in your cluster that you'd like to remove, you may use
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.. the ``destroy`` option. ::
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.. ceph-deploy mds destroy {host-name}[:{daemon-name}] [{host-name}[:{daemon-name}] ...]
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.. You may specify a daemon instance a name (optional) if you would like to destroy
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.. a particular daemon that runs on a single server with multiple MDS daemons.
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.. .. note:: Ensure that if you remove a metadata server, the remaining metadata
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servers will be able to service requests from CephFS clients. If that is not
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possible, consider adding a metadata server before destroying the metadata
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server you would like to take offline.
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.. _MDS Config Reference: ../../../cephfs/mds-config-ref
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