Thank you Joshua and Simon for looking into this. My server wouldn't start because of a corrupt data directory, it came back up when I fixed it.
I was seeing a lot of these apparmor messages in the system log and they were being printed very frequently, so I thought they might be related. ** Changed in: apparmor Status: Incomplete => Invalid ** Changed in: mysql-5.7 (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1668114 Title: Apparmor prints various errors in dmesg and mysql fails to start To manage notifications about this bug go to: https://bugs.launchpad.net/apparmor/+bug/1668114/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs