cmds - ceph metadata server daemon
cmds -i name [ --rank rank ] [ --shadow rank ]
cmds is the metadata server daemon for the Ceph distributed file
system. One or more instances of cmds collectively manage the file
system namespace, coordinating access to the shared OSD cluster.
Each cmds daemon instance should have a unique name. The name is used
to identify daemon instances in the ceph.conf.
Once the daemon has started, the monitor cluster will normally assign
it a logical rank, or put it in a standby pool to take over for another
daemon that crashes. If a specific rank may be optionally specified on
the command line, the daemon will be assigned that rank, or will be put
in a separate standby queue specifically for that rank.
Start up as (or standby for) the given MDS rank. If not
specified, a rank will be assigned by the monitor cluster.
--shadow rank Shadow a the given MDS rank. The given MDS log
will be replayed, checking for recovery errors.
-D Debug mode: do not daemonize after startup (run in foreground)
and send log output to stdout.
-f do not daemonize after startup (run in foreground), but log to
the usual location. Useful when run via crun(8).
-c ceph.conf, --conf=ceph.conf
Use ceph.conf configuration file instead of the default
/etc/ceph/ceph.conf to determine monitor addresses during
Connect to specified monitor (instead of looking through
cmon is part of the Ceph distributed file system. Please refer to the
Ceph wiki at http://ceph.newdream.net/wiki for more information.
ceph(8), cmon(8), cosd(8)