mirror of
https://github.com/ceph/ceph
synced 2024-12-19 01:46:00 +00:00
44 lines
1.5 KiB
ReStructuredText
44 lines
1.5 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.
|
||
|
|
|
||
|
|
.. note:: CephFS is in production using 1 metadata server per cluster. You
|
||
|
|
**MUST** deploy at least one metadata server to use CephFS.
|
||
|
|
|
||
|
|
See `MDS Config Reference`_ for details on configuring monitors.
|
||
|
|
|
||
|
|
|
||
|
|
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
|
||
|
|
========================
|
||
|
|
|
||
|
|
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
|