Red Hat Bugzilla – 1397125 – [z-stream clone - 3.6.10] [z-stream clone - 4.0.6] After ovirt-engine is restarted, hypervisors stop listening on 54321 until vdsm is restarted.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2017-0109.html