On Thu, Jul 30, 2020 at 12:01 PM Yedidyah Bar David <d...@redhat.com> wrote:

> On Thu, Jul 30, 2020 at 11:30 AM Alex K <rightkickt...@gmail.com> wrote:
>
>>
>>
>> On Tue, Jul 28, 2020 at 11:51 AM Anton Louw via Users <users@ovirt.org>
>> wrote:
>>
>>>
>>>
>>> Hi All,
>>>
>>>
>>>
>>> Does somebody perhaps know the process of changing the Hosted Engine IP
>>> address? I see that it is possible, I am just not sure if it is a straight
>>> forward process using ‘nmtui’ or editing the network config file. I have
>>> also ensured that everything was configured using the FQDN.
>>>
>> Since the FQDN is not changing you should not have issues just updating
>> your DNS then changing manually the engine IP from the ifcfg-ethx files
>> then restart networking.
>> What i find difficult and perhaps impossible is to change engine FQDN, as
>> one will need to regenerate all certs from scratch (otherwise you will have
>> issues with several services: imageio proxy, OVN, etc) and there is no such
>> procedure documented/or supported.
>>
>
> I wonder - how/what did you search for, that led you to this conclusion?
> Or perhaps you even found it explicitly written somewhere?
>
Searching around and testing in LAB. I am testing 4.3 though not 4.4. I
used engine-rename tool and although was able to change fqdn for hosts and
engine, I observed that some certificates were left out (for example OVN
was still complaining about certificate issue with subject name not
agreeing with the new FQDN - checking/downloading the relevant cert was
still showing the previous FQDN). I do not deem successful the renaming of
not all services are functional.

>
> There actually is:
>
>
https://www.ovirt.org/documentation/administration_guide/#sect-The_oVirt_Engine_Rename_Tool
>

At this same link it reads:
While the ovirt-engine-rename command creates a new certificate for the web
server on which the Engine runs, it does not affect the certificate for the
Engine or the certificate authority. Due to this, there is some risk
involved in using the ovirt-engine-rename command, particularly in
environments that have been upgraded from Red Hat Enterprise Virtualization
3.2 and earlier. Therefore, changing the fully qualified domain name of the
Engine by running engine-cleanup and engine-setup is recommended where
possible.
explaining my above findings from the tests.

>
> That said, it indeed was somewhat broken for some time now - some fixed
> were only added quite recently, and are available only in current 4.4:
>
This is interesting and needed for migration scenarios. Also I am wondering
if I can change in some way the management network and make from untagged
to VLAN tagged.

>
>
> https://github.com/oVirt/ovirt-engine/commits/master/packaging/setup/plugins/ovirt-engine-rename
>
> I do not think I am aware of currently still-open bugs. If you find one,
> please file it in bugzilla. Thanks!
>
>
>> I might be able to soon test this engine IP change in a virtual
>> environment and let you know.
>>
>
> Thanks and good luck!
> --
> Didi
>
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