We have had this bug also. The strange part was that we had a staging and production server set up with chef and only one server had this problem, while everything was identical.
After further checking, we noticed the /var/lib/mysql-files folder was missing from the server with erratic behaviour. As chef didn't deployed a new version, we think the automatic updates did something erratic. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1637280 Title: Upgrade to 5.5.53-0ubuntu0.14.04.1 fails to start daemon, due to missing secure_file_priv directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.5/+bug/1637280/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs