Actually I got similar problem, when tuning setting I added table_cache = 256 into /etc/mysql/mysql.conf.d/mysqld.cnf file
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1610765 Title: Apparmor refuses mysqld open on /etc/mysql/my.cnf.migrated causing it to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1610765/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
