AppArmor fails after MySQL installation using 18.04.1 LTS

[Waylon]

This is run and returned under root.

08:12 ~: aa-complain /etc/apparmor.d

ERROR: Include file /etc/apparmor.d/abstractions/mysql not found

08:18 ~: apt-cache policy apparmor.d
libapparmor-dev:
  Installed: (none)
  Candidate: 2.12-4ubuntu5.1
  Version table:
     2.12-4ubuntu5.1 500
        500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
     2.12-4ubuntu5 500
        500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages

[Waylon (wrtechnopath-g)]

I created a file /etc/apparmor.d/abstractions/mysql and inserted the folowing:

<pre>
# ------------------------------------------------------------------
#
# Copyright (C) 2002-2006 Novell/SUSE
# Copyright (C) 2013 Christian Boltz
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 2 of the GNU General Public
# License published by the Free Software Foundation.
#
# ------------------------------------------------------------------

   /var/lib/mysql{,d}/mysql{,d}.sock rw,
   /{var/,}run/mysql{,d}/mysql{,d}.sock rw,
   /usr/share/{mysql,mysql-community-server,mariadb}/charsets/ r,
   /usr/share/{mysql,mysql-community-server,mariadb}/charsets/*.xml r,
</pre>

[Waylon (wrtechnopath-g)]

Didn't meant to have the tags (<pre> and </pre>)

[Jamie Strandboge (jdstrand)]

The apparmor package provides this file:

$ dpkg -S /etc/apparmor.d/abstractions/mysql
apparmor: /etc/apparmor.d/abstractions/mysql

It seems the file was accidentally deleted. Recreating it in the manner you did is the proper way to resolve the issue.