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MONMAPTOOL(8)			     Ceph			 MONMAPTOOL(8)

NAME
       monmaptool - ceph monitor cluster map manipulation tool

SYNOPSIS
       monmaptool mapfilename [ --clobber ] [ --print ] [ --create ]
       [ --add ip:port ... ] [ --rm ip:port ... ]

DESCRIPTION
       monmaptool  is  a utility to create, view, and modify a monitor cluster
       map for the Ceph distributed file system. The monitor map specifies the
       only fixed addresses in the Ceph distributed system.  All other daemons
       bind to arbitrary addresses and register themselves with the monitors.

       When creating a map with --create, a new monitor map with a new, random
       UUID  will  be  created.	 It  should be followed by one or more monitor
       addresses.

       The default Ceph monitor port is 6789.

OPTIONS
       --print
	      will print a plaintext dump of the map, after any	 modifications
	      are made.

       --clobber
	      will  allow  monmaptool  to overwrite mapfilename if changes are
	      made.

       --create
	      will create a new monitor map with a new UUID (and  with	it,  a
	      new, empty Ceph file system).

       --add name ip:port
	      will add a monitor with the specified ip:port to the map.

       --rm name
	      will remove the monitor with the specified ip:port from the map.

EXAMPLE
       To create a new map with three monitors (for a fresh Ceph file system):

       monmaptool  --create  --add  mon.a 192.168.0.10:6789 --add mon.b 192.168.0.11:6789 \
	 --add mon.c 192.168.0.12:6789 --clobber monmap

       To display the contents of the map:

       monmaptool --print onmap

       To replace one monitor:

       monmaptool --rm mon.a --add mon.a 192.168.0.9:6789 --clobber monmap

AVAILABILITY
       monmaptool  is  part of the Ceph distributed file system.  Please refer
       to the Ceph wiki at http://ceph.newdream.net/wiki for more information.

SEE ALSO
       ceph(8), crushtool(8), mkcephfs(8)

COPYRIGHT
       2011, New Dream Network

dev			      September 22, 2011		 MONMAPTOOL(8)

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