After upgrading to Ubuntu20 from Ubuntu18, mysql is not working.

I upgraded from Ubuntu 18 to Ubuntu 20. mySQL upgrade failed during the upgrade.

After the upgrade, I again tried to install mysql-server. I’m getting the below error:


Command used:

sudo apt install mysql-server

I used the above command after upgrade to Ubuntu20.

I even tried to edit the configuration, but that didn’t help.


Added the above two lines in /etc/mysql/mysql.cnf.

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Hi there,

It looks like that the sql_mode value might already be specified in some of your configuration files already.

I could suggest using the grep command to search for any references of sql_mode and update them accordingly:

grep -ri  "sql_mode" /etc/mysql/*

The values are mostlikely specified in the `/etc/mysql/mysql.conf.d/mysqld.cnf file.

I was able to replicate the problem on Ubuntu 20.x with the sql_mode values from the error.

Regards, Bobby