Error in check_jvm script

[Poulami]

Hi Team,

I am facing an issue while running the check_jvm script .
Whenever I run the script from nagios user, it shows below error message :
'UNKNOWN JVM is running with different username, run this script with UID 2000'

However, If I run this script from app user then it works fine.

EUID of nagios user = 2003
EUID of app user = 2000

How will I be able to run this script successfully from nagios user?
Note : Tomcat is running from app user.

Regards,
Poulami

[dwhitfield]

I assume https://exchange.nagios.org//directory/ ... vm/details is what you are using? The instructions make it clear

it must be started with
the same USERid as the target JVM

Also, I found this bit useful in the readme (https://fidanov.net/c0d3/nagios-plugins ... tor/README):

Usually the plugin is locally installed on monitored system and executed through NRPE.

The NRPE documentation can be high-level at points, but it will be useful if you are not familiar with NRPE: https://assets.nagios.com/downloads/nag ... e/NRPE.pdf

If you do not like the current state of Java checking, I would suggest letting your requirements known at https://github.com/nagios-plugins/nagio ... issues/279

[Poulami]

I am pretty sure the script will work when this will be running through the user which is responsible for running tomcat.

Now in case of NRPE, i have configured nagios user in nrpe.cfg.

Code: Select all

nrpe_user=nagios

So if I run the script through NRPE will it work?

[tgriep]

When using the NRPE agent to run the check on the remote system, you would have to edit the /etc/sudoers file on the remote server and add the following entry. Adjust the command name if needed.

Code: Select all

nagios    ALL=(ALL) NOPASSWD: /usr/local/nagios/libexec/check_jvm.sh

Then the command that is defined in the nrpe.cfg file would look like the example below. Replace <username> with the account that is associated with UID of 2000.

Code: Select all

command[check_jvm_nrpe]=/usr/bin/sudo -u <username> /usr/local/nagios/libexec/check_jvm.sh -n what ever options you need

Then restart the NRPE Agent and see if this fixes the issue for you.