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CEPH-MON(8)			     Ceph			   CEPH-MON(8)

       ceph-mon	- ceph monitor daemon

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

       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  par-
       liament 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.

       -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

       --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:

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

	      o	A list of monitors and their addresses.	 This list of monitors
		can come from a	monmap (--monmap <path>), the mon host config-
		uration	 value	(in  ceph.conf	or via -m host1,host2,...), or
		(for backward compatibility) the deprecated mon	addr lines  in
		ceph.conf.  If this monitor is to be part of the initial moni-
		tor 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.

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

	      Specify a	keyring	for use	with --mkfs.

       ceph-mon	is part	of Ceph, a massively scalable,	open-source,  distrib-
       uted  storage  system.  Please  refer  to  the  Ceph  documentation  at for	more information.

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

       2010-2014, Inktank Storage, Inc.	and contributors. Licensed under  Cre-
       ative Commons Attribution Share Alike 3.0 (CC-BY-SA-3.0)

dev				 Mar 01, 2021			   CEPH-MON(8)


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