host reinstall error on 4.5.6 - runs ovn when should not (ovn_central is defined)

[oernii]

Affected version
4.5.6

• oVirt Engine: ovirt-engine-4.5.6-1.el8.noarch
• Host OS Variant: Rocky Linux 8.10
• VDSM version: vdsm-4.50.5.1-1.el8.x86_64
• Additional relevant package versions:

Describe the bug
After upgrading to ovirt 4.5 engine+host I tried to reinstall the host via the menu and it always fails on the ansible task "Task Configure OVN for oVirt failed to execute." My hosts use classic bridges and OVN is not enabled on the cluster. The reinstall task however tries to run it.

To reproduce
reinstall a host with bridge net via engine gui

Expected behavior
reinstall succeeds

Screenshots
the ansible task tries to run "/bin/vdsm-tool ovn-config 1.2.3.4 host.domain.com" which fails

Additional context
I was able to make the re-install work by adding :

***************
*** 46,49 ****
            vdsm-tool ovn-config {{ ovn_central }} {{ ovn_tunneling_interface }} {{ ovn_host_fqdn }}
  
    when:
!     - ovn_central is defined and 1 == 2
--- 46,49 ----
            vdsm-tool ovn-config {{ ovn_central }} {{ ovn_tunneling_interface }} {{ ovn_host_fqdn }}
  
    when:
!     - ovn_central is defined

Also this issue has beed discussed on the mail list: https://www.mail-archive.com/users@ovirt.org/msg73341.html

[mat1010]

Can confirm. We had the exact same issue. Seems that this issue exists since this fix #826