As a workaround after the failure I had to also restart the service:

    # systemctl restart ovn-northd.service
    # ovn-sbctl del-ssl
    # ovn-nbctl del-ssl

without the restart, the setup got hang again.

I have also set the severity to urgent as I hit this issue during upgrade form RHV 4.1 to RHV 4.2. For example, if the ssl cleaning is run when the setup is hanging the engie-setup continues but the certificates are not properly set and is not configured even after running the engine-setup again.

This should be fixed in openvswitch-2.9.0-55.el7fdp

This bug is not really in RHV, but in the underlying openvswitch-2.9.0-53.el7fdn

We keep it only for testing and properly notifying the RHV customers who were affected by it.

*** Bug 1570384 has been marked as a duplicate of this bug. ***

verified: 4.2.6.3-0.1.el7ev

build 4.2.6.3-0.1.el7ev include: ovirt-setup-lib-1.1.5-1.el7ev.noarch

build 4.2.6.3-0.1.el7ev include:
[root@engine openvswitch]# rpm -qa |grep openv
openvswitch-ovn-common-2.9.0-55.el7fdp.x86_64
openvswitch-selinux-extra-policy-1.0-6.el7fdp.noarch
openvswitch-ovn-central-2.9.0-55.el7fdp.x86_64
python-openvswitch-2.9.0-55.el7fdp.noarch
openvswitch-2.9.0-55.el7fdp.x86_64

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://access.redhat.com/errata/RHBA-2018:2622

My customer is running rpms from https://access.redhat.com/errata/RHBA-2018:2622 and still hit this issue. Attaching sos reports from both hosted-engine and rhev-h

Created attachment 1492194 [details]
rhevh

Created attachment 1492195 [details]
hosted-engine-sos