On Friday 30 Jan 2015 05:13:09 Troy Lea wrote: > I've been playing around with the idea of having MRTG use a RAM Disk. > > Specifically on Nagios XI and CentOS. > > I've been successfully able to define the current settings and it does work > well. > > LogDir: /var/nagiosramdisk/mrtg > ThreshDir: /var/nagiosramdisk/mrtg > WorkDir: /var/nagiosramdisk/mrtg > > Using the RAM Disk improves performance, especially once you get into 4000+ > ports being queried. > > The only problem I have is when I reboot the server the port files don't > exist until the MRTG has run the first time. For example these files: > > ub04_93.rrd > ub04_94.rrd > ub04_95.rrd > ub04_96.rrd > ub04_97.rrd > ub04_98.rrd > > This causes a problem with the check_rrdtraf program that looks for these > files. The problem is overcome once MRTG runs the first time. > > I'm wondering if MRTG has an option which will generate all these files > without actually doing an SNMP query to all the devices. > > Does anyone have any thoughts or suggestions on this topic? > > Cheers > > Troy
Couldn't you change the shutdown script for Nagios/mrtg to save the files to disk from ramdisk and then reload them before Nagios is started? -- Regards, Mick
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