Nagios Support Forum

Hi everyone,

when I execute this command:

check_nt -H host40 -p 12489 -v CPULOAD -l 5,80,90 -s nagios

I recieve this error:

NSClient - ERROR: No performance data from command: check_cpu

which I dont understand because my command is defined like this:

check_command check_nt!CPULOAD!-l 5,80,90

more specific: why is a check_cpu being called if the command is executed with check_nt?

Thanks in advance!

I'm by no means an NSClient++ expert, but I've dug around in the code a bit.

check_nt, and the NSClientServer, are kinda funky. They're basically glorified wrappers for general "NRPE" flavored operations. So that's why you're seeing "check_cpu" errors instead of "CPULOAD" errors; Because CPULOAD just calls check_cpu on the back-end.

As for why there's no performance data for check_cpu, can you share the NSClient++ version you currently have installed?

Have you also verified your Windows performance counters aren't misbehaving? NSClient++ just references those counters, and typically a lack of data can be attributed to those counters being absent or broken in some fashion.

Hi @alexbh,

Its possible the your are running the check_nrpe instead of the check_nt..

Also,just a quick guide:
The check_nt plugin collects data from the NSClient service running on a
Windows NT/2000/XP/2003 server.

Basically, check_nt tells NSClient to run a command on the windows machine.

The following commands are run by NSClient service....https://docs.nsclient.org/reference/win ... eckSystem/
Also see:
https://www.monitoring-plugins.org/doc/ ... ck_nt.html

Thanks @ mcapra

dwasswa wrote: The check_nt plugin collects data from the NSClient service running on a
Windows NT/2000/XP/2003 server.

Well, not just those...you can use it on later versions too. It might be useful to know what version of Windows though.

Hi,

thanks for your answers, I eventually fixed. I changed many things: added a password in the .ini file, version 0.3 to 0.4 ... so at the end i didnt know what fixed it.

Thanks,
Alex.

Great to hear it! Did you have any further (related) questions or are we okay to close this thread?

it can be closed,

thanks