1. 1. Upgrade all packages with sudo apt update && apt upgrade
   2. Upgrade the OS with sudo do–release–upgrade
   3. Let the upgrade finish
   4. Uncomment the lines with the repos for the following:
      1. /etc/apt/sources.list – deb [arch=amd64] http://sfo1.mirrors.digitalocean.com/mariadb/repo/10.2/ubuntu 
      2. /etc/apt/sources.list.d/runcloud.list – deb [arch=amd64] https://release.runcloud.io/ bionic main
   5. Upgrade the runcloud agent and reinstall mysql.
      1. sudo apt-get autoremove runcloud-agent
      2. sudo apt-get update
      3. sudo apt-get install runcloud-agent
      4. sudo apt-get install mariadb-server
   6. Update the root pass in /etc/mysql/my.cnf

Repos and sources will need to be updated to base on the version you’re on.