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+
+==========================================================
+ monmaptool -- ceph monitor cluster map manipulation tool
+==========================================================
+
+.. program:: monmaptool
+
+Synopsis
+========
+
+| **monmaptool** <action> [options] *mapfilename*
+
+
+Description
+===========
+
+**monmaptool** is a utility to create, view, and modify a monitor
+cluster map for the Ceph distributed storage 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 for messenger protocol v1 is 6789, and
+3300 for protocol v2.
+
+Multiple actions can be performed per invocation.
+
+
+Options
+=======
+
+.. option:: --print
+
+   print a plaintext dump of the map, after any modifications are
+   made.
+
+.. option:: --feature-list [plain|parseable]
+
+   list the enabled features as well as the available ones.
+
+   By default, a human readable output is produced.
+
+.. option:: --create
+
+   create a new monitor map with a new UUID (and with it, a new,
+   empty Ceph cluster).
+
+.. option:: --clobber
+
+   allow monmaptool to create a new mapfilename in place of an existing map.
+
+   Only useful when *--create* is used.
+
+.. option:: --generate
+
+   generate a new monmap based on the values on the command line or specified
+   in the ceph configuration.  This is, in order of preference,
+
+      #. ``--monmap filename`` to specify a monmap to load
+      #. ``--mon-host 'host1,ip2'`` to specify a list of hosts or ip addresses
+      #. ``[mon.foo]`` sections containing ``mon addr`` settings in the config. Note that this method is not recommended and support will be removed in a future release.
+
+.. option:: --filter-initial-members
+
+   filter the initial monmap by applying the ``mon initial members``
+   setting.  Monitors not present in that list will be removed, and
+   initial members not present in the map will be added with dummy
+   addresses.
+
+.. option:: --add name ip[:port]
+
+   add a monitor with the specified ip:port to the map.
+
+   If the *nautilus* feature is set, and the port is not, the monitor
+   will be added for both messenger protocols.
+
+.. option:: --addv name [protocol:ip:port[,...]]
+
+   add a monitor with the specified version:ip:port to the map.
+
+.. option:: --rm name
+
+   remove the monitor with the specified name from the map.
+
+.. option:: --fsid uuid
+
+   set the fsid to the given uuid.  If not specified with *--create*, a random fsid will be generated.
+
+.. option:: --feature-set value [--optional|--persistent]
+
+   enable a feature.
+
+.. option:: --feature-unset value [--optional|--persistent]
+
+   disable a feature.
+
+.. option:: --enable-all-features
+
+   enable all supported features.
+
+.. option:: --set-min-mon-release release
+
+   set the min_mon_release.
+
+Example
+=======
+
+To create a new map with three monitors (for a fresh Ceph cluster)::
+
+        monmaptool --create --add nodeA 192.168.0.10 --add nodeB 192.168.0.11 \
+          --add nodeC 192.168.0.12 --enable-all-features --clobber monmap
+
+To display the contents of the map::
+
+        monmaptool --print monmap
+
+To replace one monitor::
+
+        monmaptool --rm nodeA monmap
+        monmaptool --add nodeA 192.168.0.9 monmap
+
+
+Availability
+============
+
+**monmaptool** 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
+========
+
+:doc:`ceph <ceph>`\(8),
+:doc:`crushtool <crushtool>`\(8),