Hello,

May I ask you for and advise?
I'm running a small oVirt cluster and couple of months ago I decided to do
an upgrade from oVirt 4.2.8 to 4.3 and having an issues since that time. I
can only guess what I did wrong - probably one of the problems that I
haven't switched the cluster from iptables to firewalld. But this is just
my guess.

The problem is that I have upgraded the engine and one host, and then I
done an upgrade of second host I can't bring it to active state. Looks like
VDSM can't detect the network and fails to start. I even tried to reinstall
the hosts from UI (I have seen that the packages being installed) but
again, VDSM doesn't startup at the end and reinstallation fails.

Looking at hosts process list I see  script *wait_for_ipv4s*  hanging
forever.

vdsm       8603      1  6 16:26 ?        00:00:00 /usr/bin/python
/usr/share/ovirt-hosted-engine-ha/ovirt-ha-agent

*root       8630      1  0 16:26 ?        00:00:00 /bin/sh
/usr/libexec/vdsm/vdsmd_init_common.sh --pre-startroot       8645   8630  6
16:26 ?        00:00:00 /usr/bin/python2 /usr/libexec/vdsm/wait_for_ipv4s*
root       8688      1 30 16:27 ?        00:00:00 /usr/bin/python2
/usr/share/vdsm/supervdsmd --sockfile /var/run/vdsm/svdsm.sock
vdsm       8715      1  0 16:27 ?        00:00:00 /usr/bin/python
/usr/share/ovirt-hosted-engine-ha/ovirt-ha-broker

The all hosts in cluster are reachable from each other ...  That could be
the issue?

Thank you in advance!
-- 
Regards,
Artem
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