mirror of
https://github.com/ceph/ceph
synced 2024-12-16 00:15:35 +00:00
2c0b844053
You always need to specify a rank if you do journal-check. Signed-off-by: Greg Farnum <gregory.farnum@dreamhost.com>
52 lines
1.8 KiB
Groff
52 lines
1.8 KiB
Groff
.TH CMDS 8
|
|
.SH NAME
|
|
cmds \- ceph metadata server daemon
|
|
.SH SYNOPSIS
|
|
.B cmds
|
|
\fB\-i \fIname\fR
|
|
[[ \fB\-\-hot-standby\fI [rank]\fR ]|[\fB\-\-journal_check\fI rank\fR]]
|
|
|
|
.SH DESCRIPTION
|
|
.B cmds
|
|
is the metadata server daemon for the Ceph distributed file system.
|
|
One or more instances of \fBcmds\fP collectively manage the file system
|
|
namespace, coordinating access to the shared OSD cluster.
|
|
.PP
|
|
Each
|
|
.B cmds
|
|
daemon instance should have a unique \fIname\fP. The name is used
|
|
to identify daemon instances in the \fIceph.conf\fP.
|
|
.PP
|
|
Once the daemon has started, the monitor cluster will normally assign it
|
|
a logical rank, or put it in a standby pool to take over for another daemon
|
|
that crashes. Some of the specified options can cause other behaviors.
|
|
.PP
|
|
If you specify hot-standby or journal-check, you must either specify the rank
|
|
on the command line, or specify one of the mds_standby_for_[rank|name]
|
|
parameters in the config. The command line specification overrides the config,
|
|
and specifying the rank overrides specifying the name.
|
|
|
|
.SH OPTIONS
|
|
.TP
|
|
\fB\-f\fP, \fB\-\-foreground\fP
|
|
Foreground: do not daemonize after startup (run in foreground).
|
|
Do not generate a pid file. Useful when run via crun (8).
|
|
.TP
|
|
\fB\-d\fP
|
|
Debug mode: like -f, but also send all log output to stderr.
|
|
.TP
|
|
\fB\-c\fI ceph.conf\fR, \fB\-\-conf=\fIceph.conf\fR
|
|
Use \fIceph.conf\fP configuration file instead of the default \fI/etc/ceph/ceph.conf\fP
|
|
to determine monitor addresses during startup.
|
|
.TP
|
|
\fB\-m\fI monaddress[:port]\fR
|
|
Connect to specified monitor (instead of looking through \fIceph.conf\fR).
|
|
.SH AVAILABILITY
|
|
.B cmon
|
|
is part of the Ceph distributed file system. Please refer to the Ceph wiki at
|
|
http://ceph.newdream.net/wiki for more information.
|
|
.SH SEE ALSO
|
|
.BR ceph (8),
|
|
.BR cmon (8),
|
|
.BR cosd (8)
|