Ubuntu 12.04 Mysql Won't Install

Question

Error when i trying to install mysql-server on Ubuntu 12.04

AppArmor parser error for /etc/apparmor.d/usr.sbin.mysqld in /etc/apparmor.d/usr.sbin.mysqld at line 9: abstractions/mysql start: Job failed to start

Answer 1

Ok, I wont share the time and failures on repairing a mysql install on 12.04 but here is what I did having most if not all the symptoms of multiple faulures.

  sudo apt-get --purge apparmor 

(reinstall after done?)

 sudo apt-get remove --purge mysql-client-* mysql-server-* mysql-core-* mysql-workbench-* 

(the * is all files related to that tag

 sudo aptitude purge ~c 

(must have aptitude installed)
check removal of all files by:

 sudo dpkg --get-selections 

(you can replace with sudo dpkg --get-selections | grep mysql) but i reccomend the first because a clean file structure runs well. Then reinstall using:

 sudo apt-get -f mysql-server-5.5 

and whatever else mysql packages you need. I have reproduced the error most of us have been getting and this fixed it each time.

NOTE!!! DO NOT STOP PASSWORD SETUP WHEN CONFIGURING MYSQL_SERVER_5.5!!!