We have installed OTRS 6.0.24 on CentOS Linux release 7.7.1908 (Core).
We installed a lower OTRS 6 version from scratch and did updates.
The system uses 2 VM´s. 1 for the actual OTRS and 1 for the Database(MySQL, 5.7.26-29 Percona Server (GPL), Release 29).
It was running fine for approx. 2 months now.
But last week an issue occured where there was no articles displayed on the GUI.
What we did to find the issue:
- searching logs for unusual error, warnings -> no findings
- check modules with: /opt/otrs/bin/otrs.CheckModules.pl -> all ok
- activate binlog on the DB -> nothing unusual
- create a MD5 hash over all OTRS files, excluding logs and ./var folder. One with the failure state and one with the working state. -> no difference.
Restore the Snapshot of the working state of the VM.
The issue occured again within one week after the snapshot fix.
Worth to mention, we have activated SSL one week before this issue occured!
So for us both states of the VM look exactly the same, but one shows articles and one does not.
Would you have any advice in how we can search for the issue?
Is this a known bug maybe?