'\" t
.\"     Title: cnid_metad
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
.\"      Date: 23 Dec 2009
.\"    Manual: Netatalk 2.1
.\"    Source: Netatalk 2.1
.\"  Language: English
.\"
.TH "CNID_METAD" "8" "23 Dec 2009" "Netatalk 2.1" "Netatalk 2.1"
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.SH "NAME"
cnid_metad \- start cnid_dbd daemons on request
.SH "SYNOPSIS"
.HP \w'\fBcnid_metad\fR\fB\fR\ 'u
\fBcnid_metad\fR\fB\fR [\-l\ \fIloglevel\fR\ [\-f\ \fIfilename\fR]] [\-d] [\-h\ \fIhostname\fR] [\-p\ \fIport\fR] [\-u\ \fIuser\fR] [\-g\ \fIgroup\fR] [\-s\ \fIcnid_dbdpathname\fR]
.SH "DESCRIPTION"
.PP
\fBcnid_metad\fR
waits for requests from
\fBafpd\fR
to start up instances of the
\fBcnid_dbd\fR
daemon\&. It keeps track of the status of a
\fBcnid_dbd\fR
instance once started and will restart it if necessary\&.
\fBcnid_metad\fR
is normally started at boot time from
/etc/rc
or equivalent and runs until shutdown\&.
\fBafpd\fR
needs to be configured with the
\fB\-cnidserver\fR
option in
\fBafpd\&.conf\fR
in order to access
\fBcnid_metad\&.\fR
It is possible to run more than one instance of
\fBcnid_metad\fR
on the same machine if different values for the interface and/or port are specified with the
\fB\-h\fR
and
\fB\-p\fR
options\&.
.SH "OPTIONS"
.PP
\fB\-l\fR\fI <loglevel> [\-f <filename>]\fR
.RS 4
Specify that any message of a loglevel up to the given
\fBloglevel\fR
should be logged to the given file\&. If the filename is ommited the loglevel applies to messages passed to syslog\&. Default is logs to syslog with a default logging setup of
\fB"log_note\fR"\&.
.sp
\fBNote:\fR
\fBcnid_metad\fR
passes this to
\fBcnid_dbd\fR
which will in turn use this for its logging setup\&.
.sp
loglevels: LOG_SEVERE, LOG_ERROR, LOG_WARN, LOG_NOTE, LOG_INFO, LOG_DEBUG, LOG_DEBUG6, LOG_DEBUG7, LOG_DEBUG8, LOG_DEBUG9, LOG_MAXDEBUG
.PP
\fBExample.\ \&Useful default config\fR
.sp
.if n \{\
.RS 4
.\}
.nf
\-l log_info \-f /var/log/afpd\&.log
.fi
.if n \{\
.RE
.\}
.PP
\fBExample.\ \&Debugging config\fR
.sp
.if n \{\
.RS 4
.\}
.nf
\-l log_maxdebug \-f /var/log/afpd\&.log
.fi
.if n \{\
.RE
.\}
.RE
.PP
\fB\-d\fR
.RS 4
\fBcnid_metad will remain in the foreground and\fR
will also leave the standard input, standard output and standard error file descriptors open\&. Useful for debugging\&.
.RE
.PP
\fB\-h\fR\fI hostname\fR
.RS 4
Use
\fIhostname\fR
as the network interface for requests as opposed to the default
\fBlocalhost\fR\&. The network address may be specified either in dotted\-decimal format for IPv4 or in hexadecimal format for IPv6\&.
.RE
.PP
\fB\-p\fR\fI port\fR
.RS 4
Use
\fIport\fR
as the port number for reqests\&. Default is 4700\&.
.RE
.PP
\fB\-u\fR\fI user\fR
.RS 4
Switch to the userid of
\fIuser\fR
before serving requests\&. This userid will be inherited by all
\fBcnid_dbd\fR
daemon processes started\&.
.RE
.PP
\fB\-g\fR\fI group\fR
.RS 4
Switch to the groupid of
\fIgroup\fR
before serving requests\&. This groupid will be inherited by all
\fBcnid_dbd\fR
daemon processes started\&. Both
\fIuser\fR
and
\fIgroup\fR
must be specified as strings\&.
.RE
.PP
\fB\-s\fR\fI cnid_dbd pathname\fR
.RS 4
Use
\fIcnid_dbd pathname\fR
as the pathname of the executeable of the
\fBcnid_dbd\fR
daemon\&. The default is
\fI:SBINDIR:/cnid_dbd\&.\fR
.RE
.SH "CAVEATS"
.PP
The number of
\fBcnid_dbd\fR
subprocecesses is currently limited to 512\&.
.PP
\fBcnid_metad\fR
does not block or catch any signals apart from SIGPIPE\&. It will therefore exit on most signals received\&. This will also cause all instances of
\fBcnid_dbd\'s\fR
started by that
\fBcnid_metad\fR
to exit gracefully\&. Since state about and IPC access to the subprocesses is only maintained in memory by
\fBcnid_metad\fR
this is desired behaviour\&. As soon as
\fBcnid_metad\fR
is restarted
\fBafpd\fR
processes will transparently reconnect\&.
.SH "SEE ALSO"
.PP
\fBcnid_dbd\fR(8),
\fBafpd\fR(8),
\fBdbd\fR(1)