Hi Justin and Michael
I could be entirely wrong sorry, and the cost maybe higher but thanks to Justin idea over multiple ip in vhost, a thought came to me, which as I said, could be totally wrong so I apologise in advance
Easy high availability clustering
The basic premise is as follows
Setup an independent MySQL server
Setup a NFS /home directory
Setup a full cluster on a unique ip
Setup a secondary full cluster on a different IP address
Now, using Justin vhost for adding more A records into the vhost file, add both of the unique ip addresses assigned above
This I think would give independent failover if a cluster manager goes down , by accepting both ip addresses, and because you had setup a MySQL server separately, the MySQL would still correctly function and also /home is also separate, no loss of websites, email etc…
As I said, the cost is double, and you could even use NS1 from 1 node, giving its IP address and NS2 from the second node, giving its IP address, and therefore, a higher degree of load balancing would happen
It’s just a thought
Many thanks
John