mirror of https://github.com/ceph/ceph
47 lines
1.6 KiB
ReStructuredText
47 lines
1.6 KiB
ReStructuredText
============================
|
|
Add/Remove Metadata Server
|
|
============================
|
|
|
|
With ``ceph-deploy``, adding and removing metadata servers is a simple task. You
|
|
just add or remove one or more metadata servers on the command line with one
|
|
command.
|
|
|
|
.. important:: You must deploy at least one metadata server to use CephFS.
|
|
There is experimental support for running multiple metadata servers.
|
|
Do not run multiple metadata servers in production.
|
|
|
|
See `MDS Config Reference`_ for details on configuring metadata servers.
|
|
|
|
|
|
Add a Metadata Server
|
|
=====================
|
|
|
|
Once you deploy monitors and OSDs you may deploy the metadata server(s). ::
|
|
|
|
ceph-deploy mds create {host-name}[:{daemon-name}] [{host-name}[:{daemon-name}] ...]
|
|
|
|
You may specify a daemon instance a name (optional) if you would like to run
|
|
multiple daemons on a single server.
|
|
|
|
|
|
Remove a Metadata Server
|
|
========================
|
|
|
|
Coming soon...
|
|
|
|
.. If you have a metadata server in your cluster that you'd like to remove, you may use
|
|
.. the ``destroy`` option. ::
|
|
|
|
.. ceph-deploy mds destroy {host-name}[:{daemon-name}] [{host-name}[:{daemon-name}] ...]
|
|
|
|
.. You may specify a daemon instance a name (optional) if you would like to destroy
|
|
.. a particular daemon that runs on a single server with multiple MDS daemons.
|
|
|
|
.. .. note:: Ensure that if you remove a metadata server, the remaining metadata
|
|
servers will be able to service requests from CephFS clients. If that is not
|
|
possible, consider adding a metadata server before destroying the metadata
|
|
server you would like to take offline.
|
|
|
|
|
|
.. _MDS Config Reference: ../../../cephfs/mds-config-ref
|