Nagios Support Forum

Hi.
I've setup Nagios XI manually on a clean CentOS 5.6 installation.
Now, when I look at the graphs I see there are 2 problems for me:
1. I can't zoom-in on the graphs, which I could do using free Nagios with PNP4Naios
2. Some graphs show "Performance data unavailable" - I know that some Nagios checks don't return performance information, but I would expect PNP4Nagios not to try and draw an empty graph.

The controls may have moved around a bit from PNP4Nagios. Nagios XI deviated from PNP4Nagios so there may be some things in PNP4Nagios that aren't in Nagios XI, and vice versa. Nagios XI does offer the ability to change the time scale, which is kind of like zooming in, however I'm not sure if thats exactly what you're asking.

If you go to Home > Performance graphs > Host graphs, this will bring up the graphs, and on the far right side you can specify the time frames that it will draw so that you can 'zoom in' on certain time frames, perhaps this will accomplish what you're asking?

Also, sometimes the empty graph issue is caused by errant Nagios processes. When you can allow for a few seconds of Nagios downtime (literally seconds). Drop to the command line and issue:

killall -9 nagios
service nagios start

Hi, thank you for reply. The problem is not with nagios process, but the fact that the graphing system
shows empty graphs for checks that don't return performance data. I attach an example of
a check that returns NIC operational status - and the graph is empty, though it just should
not be displayed at all.

Check if you have any *.rrd and *.xml file in "/usr/local/nagios/share/perfdata/ifOperStatus.2" folder.

No, there is no ifOpersStatus.xml or rrd since the check itself doesn't return perfdata.