Nagios Support Forum

Hi,

I recently downloaded and installed the "graph Explorer" component and it is great. However, I noticed that some graphs that are available for certain hosts are not available for another host.

For example, a CPU Usage graph will be available for Host 1, but it is not available for Host 2. Both hosts have the same CPU service check applied to them. Has this been a reported problem? Is there something I can do/provide to fix the problem?

Much Thanks!

The graph explorer will add links for every host and service that it finds an rrdfile for (which is what stores the performance data). Can you verify that the Host 2 is returning performance data and that a PNP graph exists for that host? You can check via the Home->Host graphs page.

Yes there is an existing graph for Host 2 with performance data of that specific CPU check. Is there something else I can check?

Then there are probably two possibilities:
#1: There could be a permission issue for that directory. Maybe compare the /usr/local/nagios/share/perfdata/<hostname> directories and see if there are any differences.

#2: There could be a bug somewhere that is preventing the host from showing up. What is the hostname for this host? I'll create a dummy host on my test box with the same name and see if the issue can be replicated.

I checked the permissions as well as the files within /usr/local/nagios/share/perfdata/<hostname>, there doesn't seem to be a difference.

The hostnames are slexcat01 and slexcat02.
The same CPU check is being applied to both servers.
In graph explorer, I am able to select the CPU check in the dropdown under the slexcat01 host, but does not appear in the dropdown under the slexcat02 host.
This is also happening to a few other servers in our environment.

Ok, I think I see where the issue is. It looks like the list is retrieving graphs based on the service list, but if there's a host check only, with no services, then it can get missed. I'll rework that section and try to get an updated version up in the next couple of days. I'll post when it's updated.

I have also had similar experience but its unpredictable, for me it wasnt showing load average for localhost !! i.e. the XI box itself

Refer my previous post it doesnt seem to be related to the size of rrds http://support.nagios.com/forum/viewtop ... =16&t=2679

Hi Mike,

Can you kindly look into this asap. As this is now affecting interfaces on switches etc I can see all graphs in XI but not in the component. Please this is very urgent and would appreciate if you can have a look at this.

Cheers
Arnab

Hey Arnab,

So far I'm having trouble recreating the issue. I added a debug logger to this version of the attached component. Can you install this component, access the graph Explorer->Scalable Performance graphs(tab), and then send me the contents of /tmp/debugger.log

Then I'll also need to compare that to the output from If you can highlight what services are missing it would save me some time. I'm still working on identifying the source of the problem.