Hi there, 

We are running ovirt 4.5.4 on 3 RHEL 8.7 host with a on self hosted engine 
again using RHEL 8.7. We are making some changes to our company network so we 
followed these instructions here to move the ovirt engine onto a new storage 
with different IP address. https://access.redhat.com/solutions/6529691

We used a host to redeploy the hosted engine from a backup and we managed to 
get the hosted engine running on the new storage with the IP address. We then 
tried to reinstall the 2 other hosts but the reinstallation failed with the 
message:

Host ovirt2.ad.tintolav.com installation failed. Task Restart services failed 
to execute. Please check logs for more details: 
/var/log/ovirt-engine/host-deploy/ovirt-host-deploy-ansible-20230323083407-ovirt2.ad.tintolav.com-d950815b-f1b9-4dcf-b609-3ff1866a6b70.log

In the ovirt-engie host deploy log we see [ "Traceback (most recent call 
last):", "  File \"/usr/bin/vdsm-tool\", line 18, in <module>", "    import 
vdsm.tool", "ModuleNotFoundError: No module named 'vdsm'" ]

In the vdsm log on the host there are no errors except for a couple of warnings 
2023-03-23 07:58:22,335+0100 WARN  (periodic/1) [throttled] MOM not available. 
Error: [Errno 2] No such file or directory (throttledlog:87)
2023-03-23 07:58:22,336+0100 WARN  (periodic/1) [throttled] MOM not available, 
KSM stats will be missing. Error:  (throttledlog:87)

We have tried a completely new install for ovirt2, but we have finished back at 
the same point with the same error. 

[root@ovirt2 ~]# systemctl status vdsmd
● vdsmd.service - Virtual Desktop Server Manager
   Loaded: loaded (/usr/lib/systemd/system/vdsmd.service; enabled; vendor 
preset: disabled)
   Active: inactive (dead) since Thu 2023-03-23 08:35:32 CET; 56min ago
  Process: 22942 ExecStart=/usr/libexec/vdsm/daemonAdapter -0 /dev/null -1 
/dev/null -2 /dev/null /usr/libexec/vdsm/vdsmd (code=exited, status=0/SUCCESS)
  Process: 22876 ExecStartPre=/usr/libexec/vdsm/vdsmd_init_common.sh 
--pre-start (code=exited, status=0/SUCCESS)
 Main PID: 22942 (code=exited, status=0/SUCCESS)

Mar 23 07:58:20 ovirt2.ad.tintolav.com vdsmd_init_common.sh[22876]: vdsm: 
Running test_space
Mar 23 07:58:20 ovirt2.ad.tintolav.com vdsmd_init_common.sh[22876]: vdsm: 
Running test_lo
Mar 23 07:58:20 ovirt2.ad.tintolav.com systemd[1]: Started Virtual Desktop 
Server Manager.
Mar 23 07:58:22 ovirt2.ad.tintolav.com vdsm[22942]: WARN MOM not available. 
Error: [Errno 2] No such file or directory
Mar 23 07:58:22 ovirt2.ad.tintolav.com vdsm[22942]: WARN MOM not available, KSM 
stats will be missing. Error:
Mar 23 08:35:32 ovirt2.ad.tintolav.com systemd[1]: Stopping Virtual Desktop 
Server Manager...
Mar 23 08:35:32 ovirt2.ad.tintolav.com systemd[1]: vdsmd.service: Succeeded.
Mar 23 08:35:32 ovirt2.ad.tintolav.com systemd[1]: Stopped Virtual Desktop 
Server Manager.
Mar 23 08:35:33 ovirt2.ad.tintolav.com systemd[1]: Dependency failed for 
Virtual Desktop Server Manager.
Mar 23 08:35:33 ovirt2.ad.tintolav.com systemd[1]: vdsmd.service: Job 
vdsmd.service/start failed with result 'dependency'.


Mar 23 08:35:33 ovirt2.ad.tintolav.com systemd[1]: vdsmd.service: Job 
vdsmd.service/start failed with result 'dependency'.
[root@ovirt2 ~]# systemctl start vdsmd
A dependency job for vdsmd.service failed. See 'journalctl -xe' for details.
[root@ovirt2 ~]# journalctl -xe
Mar 23 09:34:35 ovirt2.ad.tintolav.com systemd[1]: Stopped Auxiliary vdsm 
service for running helper functions as root.
-- Subject: Unit supervdsmd.service has finished shutting down
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Unit supervdsmd.service has finished shutting down.
Mar 23 09:34:35 ovirt2.ad.tintolav.com systemd[1]: Started Auxiliary vdsm 
service for running helper functions as root.
-- Subject: Unit supervdsmd.service has finished start-up
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Unit supervdsmd.service has finished starting up.
--
-- The start-up result is done.
Mar 23 09:34:35 ovirt2.ad.tintolav.com daemonAdapter[28677]: Traceback (most 
recent call last):
Mar 23 09:34:35 ovirt2.ad.tintolav.com daemonAdapter[28677]:   File 
"/usr/libexec/vdsm/daemonAdapter", line 16, in <module>
Mar 23 09:34:35 ovirt2.ad.tintolav.com daemonAdapter[28677]:     from 
vdsm.config import config
Mar 23 09:34:35 ovirt2.ad.tintolav.com daemonAdapter[28677]: 
ModuleNotFoundError: No module named 'vdsm'
Mar 23 09:34:35 ovirt2.ad.tintolav.com systemd[1]: supervdsmd.service: Main 
process exited, code=exited, status=1/FAILURE
Mar 23 09:34:35 ovirt2.ad.tintolav.com systemd[1]: supervdsmd.service: Failed 
with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- The unit supervdsmd.service has entered the 'failed' state with result 
'exit-code'.
Mar 23 09:34:35 ovirt2.ad.tintolav.com systemd[1]: supervdsmd.service: Service 
RestartSec=100ms expired, scheduling restart.
Mar 23 09:34:35 ovirt2.ad.tintolav.com systemd[1]: supervdsmd.service: 
Scheduled restart job, restart counter is at 5.
-- Subject: Automatic restarting of a unit has been scheduled
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Automatic restarting of the unit supervdsmd.service has been scheduled, as 
the result for
-- the configured Restart= setting for the unit.
Mar 23 09:34:35 ovirt2.ad.tintolav.com systemd[1]: Stopped Auxiliary vdsm 
service for running helper functions as root.
-- Subject: Unit supervdsmd.service has finished shutting down
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Unit supervdsmd.service has finished shutting down.
Mar 23 09:34:35 ovirt2.ad.tintolav.com systemd[1]: supervdsmd.service: Start 
request repeated too quickly.
Mar 23 09:34:35 ovirt2.ad.tintolav.com systemd[1]: supervdsmd.service: Failed 
with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- The unit supervdsmd.service has entered the 'failed' state with result 
'exit-code'.
Mar 23 09:34:35 ovirt2.ad.tintolav.com systemd[1]: Failed to start Auxiliary 
vdsm service for running helper functions as root.
-- Subject: Unit supervdsmd.service has failed
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Unit supervdsmd.service has failed.
--
-- The result is failed.

It gives the same error on the 3rd host.

Is this a python dependency issue? We are currently using python3.9. Does 
anyone have any ideas how we get host 2 and 3 up and running again in the 
cluster? 
Thanks James
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