Upgrading Mysql Version on Linux Plesk Servers We stronly recommend that you back up all your absolute databases before proceeding, as these operations are at the risk of data loss. For Ubuntu and Debian 1) You should get a full backup ve snapshot on your server. 2) Let’s take the backup of /etc/mysql/my.cnf : # cp /etc/mysql/my.cnf.ydk 3) Add the MySQL APT Repository (repository) You can download MySQL APT repository (repository) from here:http://dev.mysql.com/downloads/repo/apt/. We select and download the platform to be downloaded. # wget https://dev.mysql.com/get/mysql-apt-config_0.8.9-1_all.de