ceph-mon - ceph monitor daemon
ceph-mon -i monid [ --mon-data mondatapath ]
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.
- Debug mode: like -f, but also send all log output to stderr.
- --setuser userorgid
- Set uid after starting. If a username is specified, the user record is looked up to get a uid and a gid, and the gid is also set as well, unless --setgroup is also specified.
- --setgroup grouporgid
- Set gid after starting. If a group name is specified the group record is looked up to get a gid.
- -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.
- 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 (for backward compatibility) the deprecated 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>.
- Specify a keyring for use with --mkfs.
ceph-mon 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.
2010-2021, Inktank Storage, Inc. and contributors. Licensed under Creative Commons Attribution Share Alike 3.0 (CC-BY-SA-3.0)
|May 27, 2021||dev|