====== MySQL 5.5 ======
===== Upgrade =====
If upgrade cannot configure MySQL, then you need to run [[https://dev.mysql.com/doc/refman/5.5/en/mysql-upgrade.html|mysql_upgrade]]<code>mysql_upgrade --user=<user> --password=<password></code>Make sure the data directory is rwx for the mysql user. You might also want to consider [[http://99webtools.com/blog/how-to-change-mysql-data-directory-location/|How to change Mysql data directory location]]

===== Additional packages =====
  apt-get install mysql-utilities

===== Configuration =====
  * [[http://mysql.rjweb.org/doc.php/memory|MySQL Memory Allocation]]