[IRCServices] Rotate Log function - performance

[Orion]

Ian R. Justman said:
> As has been suggested, use SIGUSR2.  Then let Cron deal with the "per
> second" dickering to call a Perl/Python/Script/whatever script you may
> write deal with the actual rotating.
> 
> As for precision, does the phrase, "Measure with a micrometer, mark with
> chalk, cut with an axe" mean anything to you?  I don't know about you, but
> I frankly don't much care.  Just as long as I can move logs out of the way
> and keep my disk space somewhat manageable, that's all I ask.
> 
> I was the one who asked for this function.  Mainly because it's MUCH
> easier to set up a cron event than to try to remember to get my butt onto
> IRC and issue the rotatelog command.
> 
> In fact, many systems use this kind functionality notably with system
> logs, including most Linux distros as well as FreeBSD and possibly the
> other BSDs as well.  I figured something like this should be in Services
> because the operating system already has tools which allow for periodic
> scheduling; wny not use them? ;)  Plus it's pretty simple to whip up a
> rotating script in Perl or even shell script.

or just add a stanza to your logrotate.conf :)

/usr/local/lib/services/services.log {
	daily			# or 'weekly' if you prefer :)
	rotate 14		# save 14 backups of logs
	errors root		# mail errors to root
	compress		# compress old logs
	create 0600 user group	# create an empty logfile with these permissions
				# after rotating the old one out of the way
	postrotate		# execute these commands after rotating the logfiles
		kill -SIGUSR2 `cat /usr/local/lib/services/services.pid`
	endscript
}

Disclaimer: I haven't actually tried that. just whipped it up on the fly... still 
using old services myself ;)

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