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Date:      Sun, 18 Aug 2002 13:29:43 +0100
From:      Matthew Seaman <m.seaman@infracaninophile.co.uk>
To:        sroberts@dsl.pipex.com
Cc:        Matthew Seaman <m.seaman@infracaninophile.co.uk>, FreeBSD Questions <freebsd-questions@FreeBSD.ORG>
Subject:   Re: How to add service to log in newsyslog.conf?
Message-ID:  <20020818122943.GE2079@happy-idiot-talk.infracaninophi>
In-Reply-To: <1029669916.5163.5.camel@Demon.vickiandstacey.com>
References:  <1029631750.38776.229.camel@Demon.vickiandstacey.com> <20020818110909.GC2079@happy-idiot-talk.infracaninophi> <1029669916.5163.5.camel@Demon.vickiandstacey.com>

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On Sun, Aug 18, 2002 at 12:25:14PM +0100, Stacey Roberts wrote:

> I wasn't sure about the PID column and how to use it, didn't mean to
> waste anyone's time here.

You only need to use the PID column for daemons that run persistently
and log directly (ie. not via syslog(2)) to a file to which they keep
an open file descriptor.  The daemon also needs to be programmed so
that it will re-open its log files on receipt of a signal --- usually
SIGHUP, but not always.  Sending a SIGHUP to syslogd(8) is handled
automatically by newsyslog(1), so you don't need to add any extra
configuration to support that.

For instance, apache httpd fulfils those criteria, and I have:

    # Nb. signal 30 == SIGUSR1 => graceful restart of apache
    #
    /var/log/httpd-access.log               644  20    100  *     Z   /var/run/httpd.pid 30

You can see if a daemon has a log file open for writing by using the
fstat(1) command:

    happy-idiot-talk:~:% fstat /var/log/messages
    USER     CMD          PID   FD MOUNT      INUM MODE         SZ|DV R/W NAME
    root     syslogd       92    8 /var        170 -rw-r--r--     114  w  /var/log/messages

Since you're (presumably) running ftpd(8) out of inetd(8), which means
that ftpd(8) doesn't run continually, you don't need to worry about
signalling it to close and re-open its log files. The config you've
set up will be fine.

	Cheers,

	Matthew

-- 
Dr Matthew J Seaman MA, D.Phil.                       26 The Paddocks
                                                      Savill Way
Tel: +44 1628 476614                                  Marlow
Fax: +44 0870 0522645                                 Bucks., SL7 1TH UK

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