I have an ISCSI SAN that we purchased to store images for our cluster (2TB of images). After reading, we probably should have gone with a NAS rather than a SAN, but back to the point.
I'm going to need two servers to share a single LUN on the SAN for failover. We have haproxy and nginx setup on these two centos 6.5 machines. We're using keepalived to share a virtual ip between these two machines in case one crashes. Similarly, we need the iscsi lun to be available on whichever machine is active so we can serve images to our cluster.
Is there a "simple" way to make this happen?