CPANEL is professional manager for Linux.
#wget -N http://httpupdate.cpanel.net/latest
If license is not valid (because of firewall or IP change), you just run /usr/local/cpanel/cpkeyclt to activate license for your IP.
Note: When installing cPanel & WHM, Apache 2.2 và PHP 5.2.17 are installed default. After installation is finished, you can edit web Apache and PHP with WHM EasyApache.
Installing time is about 2-5 hours according to your server position.
In order access admin page of WHM, just go https://$IP:2087 with your ROOT account.