theunknownstuntman

Apologies @theunknownstuntman Ignore any MariaDB references made. Didn't realize that you were using MySQL not MariaDB until you made...

Strange though "The error in Plesk: ERR [panel] SQLSTATE[HY000] [2002] No such file or directory, Can't connect to local MySQL server...

The error in question indicates that Plesk was unable to connect to the MySQL service. As far as I am aware, this often happens if...

Thank you for your answe @Sebahat.hadzhi . At this time mysql.service was still running (mysql-server-8.0 to be precise). I decided...

Thanks for your detailed answer. I decided to upgrade the server and with a few problems I was able to finish this. See below.

FWIW Plesk themselves, should have addressed this error some time ago. They did indeed, fix the other two issues (see posts #2 and #3...

Regarding The error in Plesk: ERR [panel] SQLSTATE[HY000] [2002] No such file or directory, Can't connect to local MySQL server through...

I happen to have the same error, after upgrading from Ubuntu 18.0x LTS to 20.0x LTS. Plesk has not been upgraded as part of the Ubuntu...