Mysql alerts using agent


I am monitoring MySQL (MariaDB) using the check_mk_agent. I’m getting data in my graphs, so I know this is working fine.

However - I would like to setup an alert if MySQL goes down on the device/host. I’ve tried some things but am not having luck. I’m hoping someone has some advice?

I see librenms.applications has a field for app_state (and app_type = mysql)… I can even see app_state toggle from ‘OK’ to ‘UNKNOWN’ (if I manually shut-down mysql on my test device/host). However no alerts are getting generated (I do have a valid transport set too for notifications, even so the alert doesn’t show on the device page in LibreNMS).

Here’s the SQL I have in my rule:
SELECT * FROM devices,applications WHERE (devices.device_id = ? AND devices.device_id = applications.device_id) AND applications.app_state != "OK" AND applications.app_type = "mysql"

-bash-4.2$ php validate.php

Component Version
LibreNMS 1.70.1
DB Schema 2020_11_02_164331_add_powerstate_enum_to_vminfo (191)
PHP 7.3.18
Python 3.6.8
MySQL 5.5.65-MariaDB
RRDTool 1.7.2

[OK] Composer Version: 2.0.8
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct
[WARN] IPv6 is disabled on your server, you will not be able to add IPv6 devices.

Thanks in advance for any advice.

Best Regards,

I’m currently searching for the exact same thing.
I want to have some monitoring for MariaDB. (UP-Down)

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