cPanel is designed to run on Linux, although some people may try their hand at installing it on FreeBSD. In particular cPanel only lists three Linux distributions as being “supported”: CentOS, Red Hat Enterprise Linux (RHEL), and CloudLinux. Although it is less popular than the other two, CloudLinux has many advantages that may make it appealing to web hosting providers.
CloudLinux is a commercial operating system that promises more stability and reliability for servers, particularly those in a web hosting environment. According to the CloudLinux website, it is easy to convert a server running CentOS or RHEL to CloudLinux in as little as 5 minutes. CloudLinux is licensed on a subscription basis, requiring users to a pay per server/per month fee to keep it supported.
Converting cPanel to use CloudLinux is also an easy task, which only takes a few minutes. You only need to replace a few RPM packages from your default CentOS or RHEL distribution. Alternatively, you can take advantage of cPanel’s free migration service, available for any qualifying cPanel users with active licenses.
cPanel has configured its hosting automation system to be tightly integrated with CloudLinux. That means that you will get the same level of seamless management and control that you have likely come to expect from cPanel and WHM. For more information about cPanel’s support of CloudLinux, visit the company’s website on the subject.