Nagios Support Forum

https://www.google.com/search?q=nagios+core+configuration+files&sca_esv=584142833&sxsrf=AM9HkKkZ3v3fDMksorp4q_p2wzhQIjWyiQ%3A1700728753323&ei=sQ9fZfakE8DDqtsP0oSI2Ao&oq=nagios+core+conf&gs_lp=Egxnd3Mtd2l6LXNlcnAiEG5hZ2lvcyBjb3JlIGNvbmYqAggAMgUQABiABDIFEAAYgAQyBRAAGIAEMgYQABgWGB4y...

There was a similar recent post that wound up being a service that was doing a find on a dir that contained a massive number of files. 100k is a lot for an argument. I think I'd be looking for something similar.

Try running a check from the shell as defined by the service as the nagios user and read the output.

Sorry, I didn't know the OP was checking on network gear...

Templates, hostgroups and generic services should typically be used so that for example only one check_cpu service should be defined (for an OS type). Using the wizards to define multiple again as an example check_cpu services will make for an unmanageable system. This may not be what's happening, b...

The OP may want to look into the nagios scheduler and it's timing, which is somewhat inexact due to having many services to schedule in a limited time.

The nagios documentation if you read it says plugins should produce a single line of output. If running the plugin from the shell produces the output you desire, but running it from ncpa via the nagios server doesn't it seems that ncpa is enforcing the nagios requirements. BTW nrpe will happily prod...

To add to the last post, the OP probably needs to output to a file and in the format that conforms to one of the syslog RFCs. An internet search can provide links to the RFCs. Then the OP can define a rsyslog or other log forwarder to send the log data to NLS.

The OP needs to run the check commands from the shell and figure out why they fail. I'd start with the disk check.