We are installing new nodes for the installation of OnDemand 1.5. The cluster is scheduled to be upgraded to RHEL 7 late this spring however in the meantime it is a mixed environment.
Should things work together with the front end running RHEL 7 rpms and the compute nodes running RHEL 6 rpms?
We will also be testing this behind an F5 load balancer with failover to give better enterprise grade management but that is probably a discussion for another day.