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</o:shapelayout></xml><![endif]--></head><body lang=EN-NZ link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>I’m having a go at creating a worker and scheduler utility for mrtg under gearman.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Gearman is a distributed processing server, so you’d run gearmand on your central server somewhere to manage the queues, the mrtg_gearman_worker on multiple hosts to handle the queues.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On your central MRTG host, you’d run rrdcached, and mrtg_gearman to schedule all the cfg files via the gearman daemon. Then, one of the workers would pick up the job, run MRTG (via cached embedded perl compiler) on it (which would submit the results via rrdcached), and submit an ‘OK’ back to the centre.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>It might also be possible to wrap custom target checks (IE, things in backticks) in gearman to run them in a distributed way.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m basing this on the mod_gearman structure used by Nagios to distribute the Nagios checks; this is very similar to the way MRTG would work, though MRTG would be simpler having only one thing to do.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Anyone interested in this possibility? It would make a distributed MRTG work much more easily than the other methods of manually splitting cfg files between satellites, and using NFS rather than rrdcached.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Steve<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div class=MsoNormal align=center style='text-align:center'><span lang=EN-US><hr size=2 width="100%" align=center></span></div><p class=MsoNormal><b>Steve Shipway</b><b><o:p></o:p></b></p><p class=MsoNormal><span style='font-size:10.0pt'>ITS Unix Services Design Lead<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>University of Auckland, New Zealand<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>Floor 1, 58 Symonds Street, Auckland<o:p></o:p></span></p><p class=MsoNormal><i><span style='font-size:10.0pt;color:#595959'>Phone: +64 (0)9 3737599 ext 86487<o:p></o:p></span></i></p><p class=MsoNormal><i><span style='font-size:10.0pt;color:#595959'>DDI: +64 (0)9 924 6487<o:p></o:p></span></i></p><p class=MsoNormal><i><span style='font-size:10.0pt;color:#595959'>Mobile: +64 (0)21 753 189<o:p></o:p></span></i></p><p class=MsoNormal><i><span style='font-size:10.0pt;color:#595959'>Email: <a href="mailto:s.shipway@auckland.ac.nz"><span style='color:#595959'>s.shipway@auckland.ac.nz</span></a><o:p></o:p></span></i></p><p class=MsoNormal><span lang=EN-GB style='font-size:18.0pt;font-family:Webdings;color:green'>P</span><span lang=EN-GB style='color:blue'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial Narrow","sans-serif";color:green'>Please consider the environment before printing this e-mail</span><span lang=EN-GB style='color:blue'> </span><span lang=EN-GB style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:navy'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>