Bug 1785364

Description of problem:
This may be related to the backup/restore procedure, for which there was a bug 
that was supposed to be resolved in 4.3.5 - 

https://bugzilla.redhat.com/show_bug.cgi?id=1630824

However, after a backup on 4.3.6 and restore, the ovn networks were not restored. 

Furthermore, configuration was broken as ovn-controller.log is spewing SSL errors and even newly created ovn networks applied to VM's are unable to ping with each-other.

Version-Release number of selected component (if applicable):
4.3.6

How reproducible:
I was unable to reproduce this due to inadequate resources available.

Steps to Reproduce:
1. Take a backup on 4.3.6.7
2. Restore backup in new deployment of HE w/ 4.3.7
3. OVN networks not restored, and newly created OVN networks do not work

Actual results:
OVN networks not restored, and newly created OVN networks do not work due to SSL issues between mananger/host.


Expected results:
OVN networks should be restored and there should not be SSL errors between hosts/manager. Also newly created networks should be able to be created and applied to VM's and network connectivity should function.

Additional info:
To fix this setup, the following procedure was required:


~~~
On RHV-M reconfigure OVN:

1. From RHV-M go to Administration -> Providers -> ovirt-provider-ovn -> Edit -> Rename this to something else, because when reconfiguring ovn on RHV-M, it will add a "new" 'ovirt-provider-ovn' and will conflict with the "new" one.

2. Take a backup of /etc/ovirt-provider-ovn/ 

3. Take a backup of /etc/ovirt-engine-setup.conf.d/20-setup-ovirt-post.conf

4. Edit the file /etc/ovirt-engine-setup.conf.d/20-setup-ovirt-post.conf

    - Comment out the line starting with 'OVESETUP_OVN/ovirtProviderOvnId=str:'
    - Change the line starting with 'OVESETUP_OVN/ovirtProviderOvn' to none:None

It should look similar to this (note: Id will be different than below):

~~~
$ grep OVN /etc/ovirt-engine-setup.conf.d/20-setup-ovirt-post.conf

OVESETUP_OVN/ovirtProviderOvn=none:None
#OVESETUP_OVN/ovirtProviderOvnId=str:23e832e4-ddac-4da4-9353-b5be34b5da6d
~~~


5. # engine-setup --reconfigure-optional-components --offline


6. Reconfigure the hosts, from 'rhev1' (ensure any VM's are down and host is in maintenance first):

# vdsm-tool ovn-unconfigure
# ovs-ofctl del-flows br-int
# vdsm-tool ovn-config <RHV-M_IP> ovirtmgmt


7. Check for any SSL errors in /var/log/openvswitch/ovn-controller.log

8. If there are no more SSL errors, then create some new networks in RHV-M on the new 'ovirt-provider-ovn' network and apply it to some VM's and confirm pings are now working properly.
~~~