It is easy to switch server from CentOS 5.x or 6.x to CloudLinux. The process takes a few minutes and replaces just a handful of RPMs.
# wget http://repo.cloudlinux.com/cloudlinux/sources/cln/cldeploy
# sh cldeploy -i
After the installation is completed, you will then need to reboot.
Once you have rebooted, you are running CloudLinux kernel with LVE enabled.
The script automatically detects and supports following control panels: cPanel, Plesk, ISPmanager, DirectAdmin, InterWorx. It will install CloudLinux kernel, Apache module, PAM module, command line tools as well as LVE Manager
You are then free to go ahead and install CageFS, Alt-PHP where applicable.