How to monitor Linux physical memory on Icinga2

arshe · July 18, 2019, 10:41am

Hi

I am searching how to monitor Linux physical memory on Icinga2 .

I don`t see any plugin for physical memory check and uptime plugin for Linux .

For windows, I am using NSClient++ ,it is fine.

blakehartshorn · July 18, 2019, 11:05am

The plugin isn’t included, but there’s a template for it.

See this here: https://icinga.com/docs/icinga2/latest/doc/10-icinga-template-library/#mem

as well, here’s the link for the plugin itself:

You’ll want to throw that in your default monitoring plugins folder, wherever that is.

gkoutsog · July 18, 2019, 11:53am

I can also suggest Percona’s plugin. Inside their database tool plugin repo there is also a plugin for Nagios/Icinga that checks memory. See here

/George

arshe · July 19, 2019, 6:16am

Hi
Blake

nice to meet you!

I have tested this script.Not working .

Can u tell me how it is working ?

Thanks

log1c · July 19, 2019, 7:08am

What exactly is not working?
Please describe what you did and what the outcome of running the script is.

To “install” the script:

download from github
chmod 755 the script
./check_mem.pl --help to see all command line options
run the scripts with you desired options
maybe install some missing perl libs

arshe · July 19, 2019, 7:29am

Hi log1c

It is working in terminal .

Please see the photo.

log1c · July 19, 2019, 7:53am

The output clearly states that the check_mem.pl plugin is not found in the /usr/lib64/nagios/plugins directory.
So either the plugin really does not exist there, or the permissions and/or file ownership settings are wrong.

Running the plugin as root will always work. What happens if you run it as the user running icinga (typically nagios on Debian/Ubuntu systems and icinga on CentOS/RHEL)

winem · July 19, 2019, 7:54am

This might be an issue with the permissions. Please also share the output of pwd and ls -l /usr/lib64/nagios/plugins/check_mem.pl.

Edit: (basically redundant to what @log1c said. We were posting at the same time. )

acolvinPID · July 19, 2019, 9:09pm

@arshe Are you using RHEL or CentOS and is SELinux enabled?

arshe · July 20, 2019, 3:34pm

CentOS bro

SELinux is enforcing bro .

arshe · July 20, 2019, 3:39pm

permission ??

@log1c @winem

I already given 777 permissions on that check_mem.pl.

CentOS 7.6
SELinux Enforcing .

Edit:

arshe · July 20, 2019, 5:35pm

@log1c @winem @acolvinPID

I got it bro

thanks all.

log1c · July 22, 2019, 5:48am

What was the final solution? In case some else stumbles across the problem, they will be happy to find a solution.