High Availability Cluster IP...
I am a newbie to HA but seem to be learning fairly quickly. I seem to be confused on the server's actual IP and the cluster IP. The main server is 172.16.31.2 and the backup server is 172.16.31.3. I have in the haresource config file to use 172.16.31.2 and when starting heartbeat it spits out all sorts of warnings and tells me to get help if I don't know what I'm doing. (Linux seems to have a cold sense of humor)
My question is, what is the cluster IP? Is it not a physical device, just an IP that different physical devices/IP's serve for redundancy/load balancing? If that's the case, should I change the server IP's to something like 172.16.31.4 and .5? 172.16.31.2 is the IP our DNS entries point to and also our firewall.
Any help would be great!