WordPress is the most popular content management system (CMS) based on PHP and MySQL. When your WordPress CMS grows in traffic and you have outgrown your current server resources, a professional solution is to host your database on a separate database server. With this solution, you can optimize your database and your web server independently and both servers can grown on it’s own machine. In this tutorial we will guide you on how to configure WordPress to use a remote database, on a CentOS 7 based VPS.