Nagios Support Forum

cmd returns

[root@nagiosxi ~]# /usr/local/nagios/libexec/check_nrpe -H 10.5.210.85 -c CheckMEM -a MaxWarn=90% MaxCrit=95% ShowAll type=physical
Segmentation fault
[root@nagiosxi ~]# /usr/local/nagios/libexec/check_nrpe -H 10.5.210.85 -c CheckMEM -a MaxWarn=90% MaxCrit=95% ShowAll type=physical
Segmentation fault
[root@nagiosxi ~]#

here is log from the server in 7zip

The "Segmentation fault" message means that the check_nrpe plugin was not compiled correctly on the Nagios server and it needs to be reinstalled.
In you look at the following KB article under the "Install check_nrpe Plugin Only" section, there are instructions you can use to reinstall it.
https://support.nagios.com/kb/article.php?id=515

After that, run the test commands again to see if they run without the "Segmentation fault" message and post the output here.

why would all my other checks work, but just not this server?

My mistake, I thought you upgraded the XI server.

If you run this on the XI server, does it show the NSClient++ version? What does this output? Can you post your nsclient.ini file so we can view it?

Both same seg. fault

this is our prod nagiosxi server, I'm sure there are other memory checks for windows servers, but only this one shows

Retain2 Memory Usage
11d 5h 58m 56s
(No output on stdout) stderr:

if you view say the operations center,

Howver I am starting the process of building a new nagioxi centos 7.6 server so if we want to leave this until we migrated that's fine too. might be less work.

Thanks for your help

What version of the plugin is on the server?
Run this and post the output.