.TH CMON 8 .SH NAME cmon \- ceph monitor daemon .SH SYNOPSIS .B cmon \fB\-i \fImonid\fR [ \fB\-\-mon\-data mondatapath\fR ] .SH DESCRIPTION .B cmon is the cluster monitor daemon for the Ceph distributed file system. One or more instances of \fBcmon\fP form a Paxos part-time parliament cluster that provides extremely reliable and durable storage of cluster membership, configuration, and state. .PP The \fImondatapath\fP refers to a directory on a local file system storing monitor data. It is normally specified via the "mon data" option in the configuration file. .SH OPTIONS .TP \fB\-f\fP, \fB\-\-foreground\f 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, \fB\-\-debug\f 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. .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 cmds (8), .BR cosd (8)