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108 lines
2.8 KiB
ReStructuredText
108 lines
2.8 KiB
ReStructuredText
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==========================================================
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monmaptool -- ceph monitor cluster map manipulation tool
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==========================================================
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.. program:: monmaptool
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Synopsis
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========
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| **monmaptool** *mapfilename* [ --clobber ] [ --print ] [ --create ]
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[ --add *ip*:*port* *...* ] [ --rm *ip*:*port* *...* ]
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Description
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===========
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**monmaptool** is a utility to create, view, and modify a monitor
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cluster map for the Ceph distributed storage system. The monitor map
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specifies the only fixed addresses in the Ceph distributed system.
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All other daemons bind to arbitrary addresses and register themselves
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with the monitors.
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When creating a map with --create, a new monitor map with a new,
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random UUID will be created. It should be followed by one or more
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monitor addresses.
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The default Ceph monitor port is 6789.
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Options
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=======
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.. option:: --print
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will print a plaintext dump of the map, after any modifications are
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made.
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.. option:: --clobber
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will allow monmaptool to overwrite mapfilename if changes are made.
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.. option:: --create
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will create a new monitor map with a new UUID (and with it, a new,
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empty Ceph file system).
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.. option:: --generate
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generate a new monmap based on the values on the command line or specified
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in the ceph configuration. This is, in order of preference,
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#. ``--monmap filename`` to specify a monmap to load
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#. ``--mon-host 'host1,ip2'`` to specify a list of hosts or ip addresses
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#. ``[mon.foo]`` sections containing ``mon addr`` settings in the config
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.. option:: --filter-initial-members
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filter the initial monmap by applying the ``mon initial members``
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setting. Monitors not present in that list will be removed, and
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initial members not present in the map will be added with dummy
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addresses.
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.. option:: --add name ip:port
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will add a monitor with the specified ip:port to the map.
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.. option:: --rm name
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will remove the monitor with the specified ip:port from the map.
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.. option:: --fsid uuid
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will set the fsid to the given uuid. If not specified with --create, a random fsid will be generated.
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Example
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=======
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To create a new map with three monitors (for a fresh Ceph file system)::
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monmaptool --create --add mon.a 192.168.0.10:6789 --add mon.b 192.168.0.11:6789 \
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--add mon.c 192.168.0.12:6789 --clobber monmap
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To display the contents of the map::
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monmaptool --print monmap
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To replace one monitor::
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monmaptool --rm mon.a --add mon.a 192.168.0.9:6789 --clobber monmap
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Availability
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============
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**monmaptool** is part of Ceph, a massively scalable, open-source, distributed
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storage system. Please refer to the Ceph documentation at http://ceph.com/docs
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for more information.
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See also
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========
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:doc:`ceph <ceph>`\(8),
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:doc:`crushtool <crushtool>`\(8),
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