Do I need a cPanel license if I have a CloudLinux license?
CloudLinux offers a secure version of Linux that provides advanced functionality for shared hosting environments. cPanel & WHM servers allow you to buy a license and install CloudLinux from WHM’s Home interface. The CloudLinux installation is licensed separately from the cPanel software. An active license for both installations must be purchased in order to retain full functionality.
For additional information regarding the purchasing and installation of CloudLinux, see the following articles.