[Samba] How to best configure DNS for upgrading samba AD DC?

[Rowland Penny]

On Wed, 10 Apr 2019 17:46:34 -0400
Jonathan Kreider via samba <samba at lists.samba.org> wrote:

> https://wiki.samba.org/index.php/Updating_Samba says we should shut
> down all the samba processes before we upgrade. However, if I do
> that, then I don't have DNS b/c samba _is_ my DNS on the AD DC. I
> configured it per
> https://wiki.samba.org/index.php/Setting_up_Samba_as_an_Active_Directory_Domain_Controller

That page needs updating, it looks like Samba is stopped to make a
backup, something that can now safely be done with Samba running.

> 
> Am I missing something? Do I have something misconfigured? Is there a
> way to configure a fall-back DNS service so I can still run apt-get
> when samba is not running? Or do I need to manually reconfigure DNS
> after shutting samba down?
> 
> OS = Ubuntu 18.04
> Samba = 4.10.2 (the latest & greatest - big thanks to Louis) BTW, the
> 4.7-4.9 upgrade bug is listed as fixed in 4.10 and my upgrade from
> 4.7.6-ubuntu to Louis' 4.10.2 had no issues.
> 
> Obviously I managed to upgrade without shutting down samba (I did
> take a snapshot), despite the recommendations and as of a day later,
> I'm unaware of any problems.

I do not think you have anything to worry about, that is the way I
upgrade and I have never had a problem.

Just take regular backups and carry on ;-)

Rowland