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54 lines
1.8 KiB
Groff
54 lines
1.8 KiB
Groff
.TH CMDS 8
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.SH NAME
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cmds \- ceph metadata server daemon
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.SH SYNOPSIS
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.B cmds
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\fB\-i \fIname\fR
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[[ \fB\-\-hot-standby\fI [rank]\fR ]|[\fB\-\-journal_check\fI [rank]\fR]]
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.SH DESCRIPTION
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.B cmds
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is the metadata server daemon for the Ceph distributed file system.
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One or more instances of \fBcmds\fP collectively manage the file system
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namespace, coordinating access to the shared OSD cluster.
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.PP
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Each
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.B cmds
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daemon instance should have a unique \fIname\fP. The name is used
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to identify daemon instances in the \fIceph.conf\fP.
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.PP
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Once the daemon has started, the monitor cluster will normally assign it
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a logical rank, or put it in a standby pool to take over for another daemon
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that crashes. Some of the specified options can cause other behaviors.
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.PP
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If you specify hot-standby or journal-check, you must either specify the rank
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on the command line, or specify one of the mds_standby_for_[rank|name]
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parameters in the config. The command line specification overrides the config,
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and specifying the rank overrides specifying the name.
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.SH OPTIONS
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.TP
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\fB\-D\fP
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Debug mode: do not daemonize after startup (run in foreground) and send log output
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to stdout.
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.TP
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\fB\-f\fP
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do not daemonize after startup (run in foreground), but log to the usual location.
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Useful when run via
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.BR crun (8).
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.TP
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\fB\-c\fI ceph.conf\fR, \fB\-\-conf=\fIceph.conf\fR
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Use \fIceph.conf\fP configuration file instead of the default \fI/etc/ceph/ceph.conf\fP
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to determine monitor addresses during startup.
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.TP
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\fB\-m\fI monaddress[:port]\fR
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Connect to specified monitor (instead of looking through \fIceph.conf\fR).
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.SH AVAILABILITY
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.B cmon
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is part of the Ceph distributed file system. Please refer to the Ceph wiki at
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http://ceph.newdream.net/wiki for more information.
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.SH SEE ALSO
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.BR ceph (8),
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.BR cmon (8),
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.BR cosd (8)
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