I am working to setup a high availability cPanel server. I have two servers on same data center. The cPanel server has got 150 websites and 15 ip addresses where 1 is main shared ip and 14 other dedicated IP's. Can DRBD and Heartbeat be used to make s system where the data is properly synced and when one server goes down, the websites should start loading from the other server. Also all the IP's should be moved to the other server when one fails. Is this possible?
If possible will the system crashes with cpanel normal update?