Nagios Support Forum

I may be confusing the issue. The host is seen as ok by Nagios (Green in the web interface), but since the CPU is at 100% NSClient is not responding. No alert is being sent for the CPU being 100%. If you let me know which files would help in diagnosing this problem I would be happy to provide them.

When Do Notifications Occur? The decision to send out notifications is made in the service check and host check logic. The calculations for whether a notification is to be sent are only triggered when processing a host or service check corresponding to that notification; they are not triggered simpl...

To elaborate.....When the host's CPU utilization reaches 100%, the NSClient++ service in unable to respond. It seems I can ping the host, but no command is run on the host by NSClient++ due to the CPU being 100%. So the state I end up with is an IIS server that is hung due to CPU utilization, but no...

We have the version check enabled and it works as long as the CPU is not 100%.
We also have a generic-service defined (see below) but it is not behaving as I would suspect.
I would assume Nagios would send an alert if it did not hear back from, or could not reach, NSClient++.

I am using Nagios Core to monitor a Windows IIS server. In general everything works fine but ocassionally one of the w3wp.exe processes will cause the CPU to go to 100% at which point NSClient++ becomes unresponsive. This causes the server to look like it is still up, but no disk, CPU, or memory che...