NAME
monmaptool - ceph monutir 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 ip:port
will add a monitor with the specified ip:port to the map.
--rm ip:port
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 192.168.0.10:6789 --add
192.168.0.11:6789 --add 192.168.0.12:6789 --clobber monmap
To display the contents of the map:
monmaptool --print onmap
To replace one monitor:
monmaptool --rm 192.168.0.10:6789 --add 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)