I need a HA design for a Website hosted

Hi,

I have a website hosted on http://www.hetzner.de/en/, where I have 3 physical machines, one of them is hosting the webserver with my application.

I wish to have a setup where the 3 physical machines are running VMs (debian linux) with the webserver application, all of them active (round robin load balance with connection persistence) and automatic failover using the hetzner API (http://wiki.hetzner.de/index.php/Robot_Webservice/en#Failover) to switch the Public IP address to one of the remaining servers if the master one fails.

I want the design/configuration of all the involved components/services/scripts but I will execute the implementation.

Please ask any questions.

Thanks,
JL