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126 lines
2.8 KiB
Groff
126 lines
2.8 KiB
Groff
.TH "CEPH" "8" "February 17, 2012" "dev" "Ceph"
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.SH NAME
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ceph \- ceph file system control utility
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.\" Man page generated from reStructeredText.
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.
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.SH SYNOPSIS
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.nf
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\fBceph\fP [ \-m \fImonaddr\fP ] [ \-w | \fIcommand\fP ... ]
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.fi
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.sp
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.SH DESCRIPTION
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.sp
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\fBceph\fP is a control utility for communicating with the monitor
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cluster of a running Ceph distributed file system.
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.sp
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There are three basic modes of operation.
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.SS Interactive mode
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.sp
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To start in interactive mode, no arguments are necessary. Control\-d or
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\(aqquit\(aq will exit.
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.SS Watch mode
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.sp
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Watch mode shows cluster state changes as they occur. For example:
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.sp
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.nf
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.ft C
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ceph \-w
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.ft P
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.fi
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.SS Command line mode
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.sp
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Finally, to send a single instruction to the monitor cluster (and wait
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for a response), the command can be specified on the command line.
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.SH OPTIONS
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.INDENT 0.0
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.TP
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.B \-i infile
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will specify an input file to be passed along as a payload with the
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command to the monitor cluster. This is only used for specific
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monitor commands.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-o outfile
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will write any payload returned by the monitor cluster with its
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reply to outfile. Only specific monitor commands (e.g. osd getmap)
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return a payload.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-c ceph.conf, \-\-conf=ceph.conf
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Use ceph.conf configuration file instead of the default
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/etc/ceph/ceph.conf to determine monitor addresses during startup.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-m monaddress[:port]
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Connect to specified monitor (instead of looking through ceph.conf).
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.UNINDENT
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.SH EXAMPLES
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.sp
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To grab a copy of the current OSD map:
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.sp
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.nf
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.ft C
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ceph \-m 1.2.3.4:6789 osd getmap \-o osdmap
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.ft P
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.fi
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.sp
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To get a dump of placement group (PG) state:
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.sp
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.nf
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.ft C
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ceph pg dump \-o pg.txt
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.ft P
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.fi
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.SH MONITOR COMMANDS
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.sp
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A more complete summary of commands understood by the monitor cluster can be found in the
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wiki, at
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.INDENT 0.0
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.INDENT 3.5
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\fI\%http://ceph.newdream.net/wiki/Monitor_commands\fP
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.UNINDENT
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.UNINDENT
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.SH AVAILABILITY
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.sp
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\fBceph\fP is part of the Ceph distributed file system. Please refer to the Ceph wiki at
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\fI\%http://ceph.newdream.net/wiki\fP for more information.
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.SH SEE ALSO
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.sp
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\fBceph\fP(8),
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\fBmkcephfs\fP(8)
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.SH COPYRIGHT
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2011, New Dream Network
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.\" Generated by docutils manpage writer.
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.\"
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