[rfe] How to transition to RHEL 7 based hosts?
Issue
For a RHEV3.6 compatibility level cluster RHEL7 hosts are required.
Clusters cannot contain mixed versions, therefore a new cluster would need to be created and VMs migrated.
This would require additional manual work, more hardware, possible additional downtime for VMs.
Environment
- Red Hat Enterprise Virtualization (RHEV) 3.5/3.6
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