Nagios Support Forum

You can search our exchange site for another plugin if you like.
https://exchange.nagios.org/

Now we narrowed it down to the one check that is failing.

It could be a permission problem with the plugin so try adding this line to the /etc/sudoers file and then see if the check can run from the Nagios server. If it doesn't then check the /var/log/messages log file on the remote server to see if there are any errors that can help to troubleshoot this issue.

Dear tgriep,

Any service need to restart after change?

Please advise.

Dear tgriep,

Please advise which plugin is able memory check exclude cached memory.

Thanks,
Kelvin

What is the output of this:

Dear Box,

[root@rhel64-02 ~]# su -s /bin/sh nrpe
sh-4.1$ /etc/nagios/nrpe.d/check_mem -uC -w 70 -c 90
OK - 5.5% (5451496 kB) used.|TOTAL=99005228KB;;;; USED=5451496KB;69303659;89104705;; FREE=93553732KB;;;; CACHES=93212520KB;;;;



Thanks,
Kelvin

Dear sir,

Even i added to /etc/sudoers

The result is same, and i cannot get any error information in /var/log/message

Thanks,
Kelvin

Where did you download the plugin from, do you have a link?

Or upload it here please.

HI,

File attached.

Thanks,
Kelvin

HI,

Any update?

Thanks,
Kelvin

I've tested the plugin and it works fine.

Can you confirm that in your nrpe.cfg file, the command[nagios_memory] is pointing to the correct location of the plugin (/etc/nagios/nrpe.d/check_mem).

If it is correct then nrpe/xinetd must not have been restarted or there is duplicates running.

At this point, restart the entire server and test again.

If it still does not run after this, then we need to turn on NRPE debugging to collect more information.

Edit the file:
/usr/local/nagios/etc/nrpe.cfg

Define
debug=1
(it will currently be debug=0)

Save the file and
service xinetd restart

Now we need to add an option to the rsyslog server so it processes debug messages
Edit the file:
/etc/rsyslogd.conf
Find /var/log/messages
The line in the config file will look like:
*.info;mail.none;authpriv.none;cron.none /var/log/messages

We need to add the following to the line:
*.info;mail.none;authpriv.none;cron.none;daemon.debug /var/log/messages

Save the file and
service rsyslog restart

No test executing the plugin via check_nrpe

Now there should be more information logged in /var/log/messages

Please post what is logged.