Hi ! I had the same issue and fixed it almost like Rick except I had to remove all the possible my.cnf "alternatives". Before that I purged mysql-server-5.7. Then I was able to reinstall it. I checked again all my databases and everything was OK.
sudo apt-get purge mysql-server-5.7 cd /etc/mysql sudo rm my.cnf my.cnf.fallback my.cnf.migrated my.cnf.wba.bak /etc/alternatives/my.cnf sudo apt-get install mysql-server sudo mysqlcheck --all-databases -p I think I could just have reconfigured all (sudo dpkg --configure -a) instead of purging sql-server-5.7 but after multiple trial and errors I thought it was safer. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573279 Title: package mysql-server-5.7 5.7.11-0ubuntu6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 during release upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1573279/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
