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Date: Sun, 7 Jul 2002 10:40:44 +0200
From: Nicolas Rachinsky <list@rachinsky.de>
To: freebsd-stable@FreeBSD.ORG
Subject: Re: cvs commit: src/usr.sbin/newsyslog newsyslog.c
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* Doug Barton <DougB@FreeBSD.ORG> [2002-07-06 20:38 -0700]:
> Nuno Teixeira wrote:
> 
> >     Does this mean that now I can use newsyslog to compress apache logs?
> 
> The problem with newsyslog and things like apache and named is that the
> process continues writing to the file after you mv it. The proper
> procedure for such processes is:
> 
> mv logfile logfile.old
> hup process
> (process creates and starts writing to new log)
> compress logfile.old

newsyslog in 4.6 RELEASE does:
mv logfile logfile.old
touch logfile
hup daemon
sleep(10)
compress

BTW I just mv'd some of my logfiles, syslogd is happily continuing to
write to them.

> That way you don't lose anything. Since it's designed to work with
> syslogd, what newsyslog does is:
> 
> mv logfile logfile.old
> (syslogd stops writing to logfile)
> compress logfile.old
> create logfile
> hup syslogd

I don't think so.

> That works fine for syslog, but wreaks havoc with things like apache and
> named. There is a ${PREFIX}/sbin/rotatelogs script that comes with
> apache, you should take a look at that and modify it to suit your needs.

It wouldn't work for syslog.

Nicolas

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