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  14    <H1>[IRCServices] Rotate Log function - performance</H1>
  15     <B>Orion</B>
  16     <A HREF="mailto:ircservices%40ircservices.za.net?Subject=%5BIRCServices%5D%20Rotate%20Log%20function%20-%20performance&In-Reply-To=Pine.LNX.4.21.0103021520370.294-100000%40vector.chocobo.org"
  17        TITLE="[IRCServices] Rotate Log function - performance">orion at tribble.dyndns.org
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  19     <I>Sat Mar  3 04:12:01 PST 2001</I>
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  34 <PRE>Ian R. Justman said:
  35 &gt;<i> As has been suggested, use SIGUSR2.  Then let Cron deal with the &quot;per
  36 </I>&gt;<i> second&quot; dickering to call a Perl/Python/Script/whatever script you may
  37 </I>&gt;<i> write deal with the actual rotating.
  38 </I>&gt;<i>
  39 </I>&gt;<i> As for precision, does the phrase, &quot;Measure with a micrometer, mark with
  40 </I>&gt;<i> chalk, cut with an axe&quot; mean anything to you?  I don't know about you, but
  41 </I>&gt;<i> I frankly don't much care.  Just as long as I can move logs out of the way
  42 </I>&gt;<i> and keep my disk space somewhat manageable, that's all I ask.
  43 </I>&gt;<i>
  44 </I>&gt;<i> I was the one who asked for this function.  Mainly because it's MUCH
  45 </I>&gt;<i> easier to set up a cron event than to try to remember to get my butt onto
  46 </I>&gt;<i> IRC and issue the rotatelog command.
  47 </I>&gt;<i>
  48 </I>&gt;<i> In fact, many systems use this kind functionality notably with system
  49 </I>&gt;<i> logs, including most Linux distros as well as FreeBSD and possibly the
  50 </I>&gt;<i> other BSDs as well.  I figured something like this should be in Services
  51 </I>&gt;<i> because the operating system already has tools which allow for periodic
  52 </I>&gt;<i> scheduling; wny not use them? ;)  Plus it's pretty simple to whip up a
  53 </I>&gt;<i> rotating script in Perl or even shell script.
  54 </I>
  55 or just add a stanza to your logrotate.conf :)
  56
  57 /usr/local/lib/services/services.log {
  58         daily                   # or 'weekly' if you prefer :)
  59         rotate 14               # save 14 backups of logs
  60         errors root             # mail errors to root
  61         compress                # compress old logs
  62         create 0600 user group  # create an empty logfile with these permissions
  63                                 # after rotating the old one out of the way
  64         postrotate              # execute these commands after rotating the logfiles
  65                 kill -SIGUSR2 `cat /usr/local/lib/services/services.pid`
  66         endscript
  67 }
  68
  69 Disclaimer: I haven't actually tried that. just whipped it up on the fly... still
  70 using old services myself ;)
  71
  72 --
  73 Orion                   orion [at] tribble [dot] dyndns [dot] org
  74
  75 Happiness isn't happiness
  76 without a violin-playing goat
  77
  78
  79 </PRE>
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