ceph/doc/man/8/ceph-mds.rst

   1 :orphan:
   2
   3 =========================================
   4  ceph-mds -- ceph metadata server daemon
   5 =========================================
   6
   7 .. program:: ceph-mds
   8
   9 Synopsis
  10 ========
  11
  12 | **ceph-mds** -i <*ID*> [flags]
  13
  14
  15 Description
  16 ===========
  17
  18 **ceph-mds** is the metadata server daemon for the Ceph distributed file
  19 system. One or more instances of ceph-mds collectively manage the file
  20 system namespace, coordinating access to the shared OSD cluster.
  21
  22 Each ceph-mds daemon instance should have a unique name. The name is used
  23 to identify daemon instances in the ceph.conf.
  24
  25 Once the daemon has started, the monitor cluster will normally assign
  26 it a logical rank, or put it in a standby pool to take over for
  27 another daemon that crashes. Some of the specified options can cause
  28 other behaviors.
  29
  30
  31 Options
  32 =======
  33
  34 .. option:: -f, --foreground
  35
  36    Foreground: do not daemonize after startup (run in foreground). Do
  37    not generate a pid file. Useful when run via :doc:`ceph-run
  38    <ceph-run>`\(8).
  39
  40 .. option:: -d
  41
  42    Debug mode: like ``-f``, but also send all log output to stderr.
  43
  44 .. option:: --setuser userorgid
  45
  46    Set uid after starting.  If a username is specified, the user
  47    record is looked up to get a uid and a gid, and the gid is also set
  48    as well, unless --setgroup is also specified.
  49
  50 .. option:: --setgroup grouporgid
  51
  52    Set gid after starting.  If a group name is specified the group
  53    record is looked up to get a gid.
  54
  55 .. option:: -c ceph.conf, --conf=ceph.conf
  56
  57    Use *ceph.conf* configuration file instead of the default
  58    ``/etc/ceph/ceph.conf`` to determine monitor addresses during
  59    startup.
  60
  61 .. option:: -m monaddress[:port]
  62
  63    Connect to specified monitor (instead of looking through
  64    ``ceph.conf``).
  65
  66 .. option:: --id/-i ID
  67
  68    Set ID portion of the MDS name.
  69
  70 Availability
  71 ============
  72
  73 **ceph-mds** is part of Ceph, a massively scalable, open-source, distributed storage system. Please refer to the Ceph documentation at
  74 http://ceph.com/docs for more information.
  75
  76
  77 See also
  78 ========
  79
  80 :doc:`ceph <ceph>`\(8),
  81 :doc:`ceph-mon <ceph-mon>`\(8),
  82 :doc:`ceph-osd <ceph-osd>`\(8)