When adding or reinstalling host to a cluster >= 4.2, set
in vdsm to enable only strong encryption ciphers for engine to VDSM communication.
under 4.2/4.1 cluster:
# cat /etc/vdsm/vdsm.conf
ssl_excludes = OP_NO_TLSv1,OP_NO_TLSv1_1
ssl = true
ssl_ciphers = HIGH
management_port = 54321
This bugzilla is included in oVirt 4.2.4 release, published on June 26th 2018.
Since the problem described in this bug report should be
resolved in oVirt 4.2.4 release, it has been closed with a resolution of CURRENT RELEASE.
If the solution does not work for you, please open a new bug report.