A very similar issue happened with 5.7.27-0ubuntu2 which needs to upgrade the database; in my setup, the datadir was not in the default folder /var/lib/mysql. This means that the variable datadir describing a non-default location in /etc/mysql/mysql.cnf pointed by /etc/mysql/my.cnf has been overlooked.
A workaround is to: - stop mysql.service - rsync all data located in the folder pointed by datadir into /var/lib/mysql - upgrade mysql-server-5.7 - stop mysql.service - rsync all upgraded data back to its original non-default location - restart mysql.service Et voilà! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1785693 Title: package mysql-server-5.7 5.7.23-0ubuntu0.18.04.1 failed to install/upgrade: installed mysql-server-5.7 package post-installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1785693/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
