bionic (8) ceph-mon.8.gz

Provided by: ceph-mon_12.2.13-0ubuntu0.18.04.11_amd64 bug

NAME
       ceph-mon - ceph monitor daemon


SYNOPSIS
       ceph-mon -i monid [ --mon-data mondatapath ]


DESCRIPTION
       ceph-mon  is  the  cluster  monitor daemon for the Ceph distributed file system. One or more instances of
       ceph-mon form a Paxos part-time parliament cluster that provides extremely reliable and  durable  storage
       of cluster membership, configuration, and state.

       The  mondatapath  refers  to  a  directory  on  a  local file system storing monitor data. It is normally
       specified via the mon data option in the configuration file.


OPTIONS
       -f, --foreground
              Foreground: do not daemonize after startup (run in foreground). Do not generate a pid file. Useful
              when run via ceph-run(8).

       -d     Debug mode: like -f, but also send all log output to stderr.

       --setuser userorgid
              Set uid after starting.  If a username is specified, the user record is looked up to get a uid and
              a gid, and the gid is also set as well, unless --setgroup is also specified.

       --setgroup grouporgid
              Set gid after starting.  If a group name is specified the group record is looked up to get a gid.

       -c ceph.conf, --conf=ceph.conf
              Use ceph.conf configuration file instead of the default /etc/ceph/ceph.conf to  determine  monitor
              addresses during startup.

       --mkfs Initialize the mon data directory with seed information to form and initial ceph file system or to
              join an existing monitor cluster.  Three pieces of information must be provided:

              • The cluster fsid.  This can come from a  monmap  (--monmap  <path>)  or  explicitly  via  --fsid
                <uuid>.

              • A  list of monitors and their addresses.  This list of monitors can come from a monmap (--monmap
                <path>), the mon host configuration value (in ceph.conf or via -m host1,host2,...), or mon  addr
                lines  in ceph.conf.  If this monitor is to be part of the initial monitor quorum for a new Ceph
                cluster, then it must be included in the initial list, matching either the name or address of  a
                monitor  in the list.  When matching by address, either the public addr or public subnet options
                may be used.

              • The monitor secret key mon..  This must be  included  in  the  keyring  provided  via  --keyring
                <path>.

       --keyring
              Specify a keyring for use with --mkfs.


AVAILABILITY
       ceph-mon  is part of Ceph, a massively scalable, open-source, distributed storage system. Please refer to
       the Ceph documentation at http://ceph.com/docs for more information.


SEE ALSO
       ceph(8), ceph-mds(8), ceph-osd(8)


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