NAME¶
ceph-mon - ceph monitor daemon
SYNOPSIS¶
ceph-mon -i monid [ --mon-data mondatapath ]
DESCRIPTION¶
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
parliament 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.
OPTIONS¶
- -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.
- -c ceph.conf, --conf=ceph.conf
- Use ceph.conf configuration file instead of the default
/etc/ceph/ceph.conf to determine monitor addresses during
startup.
- --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:
- •
- The cluster fsid. This can come from a monmap (--monmap
<path>) or explicitly via --fsid <uuid>.
- •
- A list of monitors and their addresses. This list of monitors can come
from a monmap ( --monmap <path>), the mon host
configuration value (in ceph.conf or via -m
host1,host2,...), or mon addr lines in ceph.conf. If
this monitor is to be part of the initial monitor 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.
- •
- The monitor secret key mon.. This must be included in the keyring
provided via --keyring <path>.
- --keyring
- Specify a keyring for use with --mkfs.
AVAILABILITY¶
ceph-mon is part of the Ceph distributed storage system. Please refer to
the Ceph documentation at
http://ceph.com/docs for more information.
SEE ALSO¶
ceph(8),
ceph-mds(8),
ceph-osd(8)
COPYRIGHT¶
2010-2014, Inktank Storage, Inc. and contributors. Licensed under Creative
Commons BY-SA