mariadb vs mysql

I have just upgraded my CentOS from 6.6 to 7.0 and it seems it has removed MySQL and put MariaDB on there instead so none of my web sites are working. So what do I do? Do I uninstall MariaDB and install MySQL or will restoring the Virtualmin backups work? Any thoughts, comments or suggestions would be greatly appreciated.

Never mind I reinstalled and don’t know how to delete this post.