Are failover services managed by rgmanager considered active-active or doubly-active-passive?
Some people have found “active-active” vs. “active-passive” described differently in different places, so you may be wondering if you’re using the terms correctly. If both nodes of a two-node cluster are running their own service, and that service has the ability to failover to the other node, does that make this an active-active cluster, or a doubly active-passive cluster? Cluster Suite is an active-active cold failover cluster, though many services might not be. RHCS certainly can’t make a service “active-active”. For example, RHCS can not transform Oracle 10g CFC into a multiple instance Oracle 10g RAC database, or make ext3 into a file system that you can mount on multiple nodes safely. Nothing can do these things. It’s open to interpretation and linguistic changes over time, of course… Historically, active-passive in the context of a failover cluster meant that only one node can serve *any* of the services at a time, because the underlying device topology or the way the cluster
