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https://github.com/ceph/ceph
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73 lines
1.9 KiB
ReStructuredText
73 lines
1.9 KiB
ReStructuredText
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=====================================
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cmds -- ceph metadata server daemon
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=====================================
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.. program:: cmds
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Synopsis
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========
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| **cmds** -i *name* [[ --hot-standby [*rank*] ]|[--journal_check *rank*]]
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Description
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===========
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**cmds** is the metadata server daemon for the Ceph distributed file
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system. One or more instances of cmds collectively manage the file
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system namespace, coordinating access to the shared OSD cluster.
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Each cmds daemon instance should have a unique name. The name is used
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to identify daemon instances in the ceph.conf.
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Once the daemon has started, the monitor cluster will normally assign
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it a logical rank, or put it in a standby pool to take over for
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another daemon that crashes. Some of the specified options can cause
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other behaviors.
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If you specify hot-standby or journal-check, you must either specify
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the rank on the command line, or specify one of the
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mds_standby_for_[rank|name] parameters in the config. The command
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line specification overrides the config, and specifying the rank
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overrides specifying the name.
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Options
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=======
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.. option:: -f, --foreground
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Foreground: do not daemonize after startup (run in foreground). Do
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not generate a pid file. Useful when run via :doc:`crun
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<crun>`\(8).
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.. option:: -d
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Debug mode: like ``-f``, but also send all log output to stderr.
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.. option:: -c ceph.conf, --conf=ceph.conf
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Use *ceph.conf* configuration file instead of the default
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``/etc/ceph/ceph.conf`` to determine monitor addresses during
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startup.
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.. option:: -m monaddress[:port]
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Connect to specified monitor (instead of looking through
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``ceph.conf``).
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Availability
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============
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**cmon** is part of the Ceph distributed file system. Please refer to the Ceph wiki at
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http://ceph.newdream.net/wiki for more information.
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See also
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========
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:doc:`ceph <ceph>`\(8),
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:doc:`cmon <cmon>`\(8),
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:doc:`cosd <cosd>`\(8)
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