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Upgrade from 16.04 LTS to 18.04.1 LTS - MySQL server problem - FrancescoHEHE - 10-28-2021

Hello,

I upgraded from 16.04 to 18.04.1 with no apparent problems (hosted on a 1&1 dedicated server)
This server hosts a number of Joomla!-powered websites.
Had to restart MySQL server, and then there was no more response from MySQL server.

Have tried re-installation with :


Code:
sudo apt-get remove mysql-server
sudo apt-get install mysql-server

Unfortunately (ie none of our sites are running now)
I tried stopping and restarting the MySQL server with no success.

Tried re-configuration with :


Code:
sudo dpkg-reconfigure mysql-server-5.7



Got this message after re-configuration :


Code:
Checking if update is needed.
This installation of MySQL is already upgraded to 5.7.35, use --force if you still need to run mysql_upgrade


It also didn't help... I'm not too familiar with MySQL server (I've installed it several times and never had a problem... I've used it without incident) but now I'm at a loss!

Has anyone got any suggestions for what I should do?
If you require any additional information, please do not hesitate to ask (please dive me the bash command to enter, as I am not fluent in Bash?)

Thank you in advance for your assistance and advice.

RE: Upgrade from 16.04 LTS to 18.04.1 LTS - MySQL server problem - Enzoengine690 - 11-05-2021

I'm just wondering if the database is physically running or not. Or is it just that communication with them isn't working?