Zabbix looses DB connection after a few seconds

[FFB-Group]

We recently upgradet our Zabbix from 6.0.9 to 6.0.12


Now we have some strange behaviour from our zabbix service while trying to connect to our database.
We use a mysql database.

After a reboot the server conntects to the database, but after a few seconds he looses the connetcion.

Furthermore, after that happend i was not able to stop the mysql services with "systemctl". And i cant normaly shutdown the machine anymore and I had to forceoff the machine.


Following the errors of the zabbix.server error log and the mysql error log.




What i already tried:

- restart Server
- stop and restart services
- checking for new updates and upgrade them

[tim.mooney]

The "Too many open files" error is likely where you should start.

You may need to use "systemctl edit" or create a systemctl "drop in" file to increase the number of files that the 'zabbix' user can have open at once. You probably want to read the systemctl documentation for "LimitNOFILE" and "systemctl edit".

[FFB-Group]

That already helped, we have had made some changes with the "systemctl edit" but i had to configure the "LimitNOFILE" in "/etc/systemd/system.conf". Now its working again, thanks