1CEPH-MDS(8) Ceph CEPH-MDS(8)
2
3
4
6 ceph-mds - ceph metadata server daemon
7
9 ceph-mds -i <ID> [flags]
10
11
13 ceph-mds is the metadata server daemon for the Ceph distributed file
14 system. One or more instances of ceph-mds collectively manage the file
15 system namespace, coordinating access to the shared OSD cluster.
16
17 Each ceph-mds daemon instance should have a unique name. The name is
18 used to identify daemon instances in the ceph.conf.
19
20 Once the daemon has started, the monitor cluster will normally assign
21 it a logical rank, or put it in a standby pool to take over for another
22 daemon that crashes. Some of the specified options can cause other
23 behaviors.
24
26 -f, --foreground
27 Foreground: do not daemonize after startup (run in foreground).
28 Do not generate a pid file. Useful when run via ceph-run(8).
29
30 -d Debug mode: like -f, but also send all log output to stderr.
31
32 --setuser userorgid
33 Set uid after starting. If a username is specified, the user
34 record is looked up to get a uid and a gid, and the gid is also
35 set as well, unless --setgroup is also specified.
36
37 --setgroup grouporgid
38 Set gid after starting. If a group name is specified the group
39 record is looked up to get a gid.
40
41 -c ceph.conf, --conf=ceph.conf
42 Use ceph.conf configuration file instead of the default
43 /etc/ceph/ceph.conf to determine monitor addresses during
44 startup.
45
46 -m monaddress[:port]
47 Connect to specified monitor (instead of looking through
48 ceph.conf).
49
50 --id/-i ID
51 Set ID portion of the MDS name.
52
54 ceph-mds is part of Ceph, a massively scalable, open-source, distrib‐
55 uted storage system. Please refer to the Ceph documentation at
56 http://ceph.com/docs for more information.
57
59 ceph(8), ceph-mon(8), ceph-osd(8)
60
62 2010-2014, Inktank Storage, Inc. and contributors. Licensed under Cre‐
63 ative Commons Attribution Share Alike 3.0 (CC-BY-SA-3.0)
64
65
66
67
68dev Apr 29, 2019 CEPH-MDS(8)