Comment 2 for bug 1914167

Thank you for taking the time to file a bug report.

Unfortunately, I am unable to reproduce it locally using a Focal container with the latest MySQL package installed. I could not find anything particularly wrong in your configuration files either, and, although your Logs.var.log.mysql.error.log.txt contains a few errors, they are not responsible for the problem you are experiencing.

We do have similar bugs reported against MySQL which contain a similar pattern found in your logs:

2021-02-02T00:38:01.105311Z 4 [System] [MY-013381] [Server] Server upgrade from '80022' to '80023' started.
2021-02-02T00:45:15.751998Z 4 [System] [MY-013381] [Server] Server upgrade from '80022' to '80023' completed.

The "Server upgrade" step is taking almost 8 minutes to complete, which can cause a problem with systemd's timeout (IIRC, it's set to 5 minutes by default). I'm not sure that you are experiencing same problem, though.

I would like to request a bit more information from you before we can proceed from the investigation. Could you post the contents of:

$ journalctl -u mysql.service

please? This will probably contain systemd-specific messages that might help us diagnose what's going on.

Since there is not enough information in your report to begin triage or to
differentiate between a local configuration problem and a bug in Ubuntu, I
am marking this bug as "Incomplete". We would be grateful if you would:
provide a more complete description of the problem, explain why you
believe this is a bug in Ubuntu rather than a problem specific to your
system, and then change the bug status back to "New".

For local configuration issues, you can find assistance here:
http://www.ubuntu.com/support/community