yum -y update
yum -y install tcp_wrappers-devel perl tar
wget http://layer1.cpanel.net/latest sh latest &
if fails you can repair it with this: /scripts/upcp –force
you will get bored until it finish
login on your server https://xxx.xxx.xxx.xxx:2087/
This should install cpanel without asking you any questions.
If you have any problems you should check: http://www.cpanel.net/install.html