I've been running into a problem. I need to setup a failover system across multiple public ip address. I know this requires dns changes. Since i knew that from the beginning of this project I ensured the domain we use was registered with a Dynamic DNS Provider. Now our service needs to provide a very reliable up time so the server themselves are sitting in different data centers on opposite sides of the country.
Now last I knew Linux-HA did not support WAN and I need a heartbeat monitor for Apache and MySQL that functions on WAN. I would greatly appreciate any advise or insight into this problem.