[RHEV 3.5] Upgrading RHEL 6/RHEV-H 6 Hosts to RHEL 7/RHEV-H 7 Host without VM downtime

Overview

RHEV 3.5 supports both RHEL6 and RHEL7 hosts (RHEL or RHEV-H). It is recommended to upgrade your hosts to RHEL7 once on RHEV 3.5. However it is not possible to mix RHEL6 and RHEL7 hosts in a single cluster. How to keep Virtual Machines up and have the hosts upgraded without having VMs downtime then?

This article documents the procedure of creating a new cluster for RHE...