[Samba] Fwd: No DNS/Kerberos after DC OS upgrade

[Rowland Penny]

On Sun, 30 Mar 2025 18:32:28 +1100
Nicolas Canonne via samba <samba at lists.samba.org> wrote:

> 
>
> >>
> >
> Sorry for top posting (haven't used mailing list for a while)
> 
> It seems that DC2 is now the main DC :

First, you do not have a 'main' DC, you just have DCs, it is just that
one of them holds the FSMO roles.

And from what you posted, it doesn't look like DC2 holds any of the
FSMO roles, it certainly doesn't hold the PDC_Emulator role.

Here is what I suggest you do:
Transfer all the FSMO roles to DC2 (seize them if you have to).
Demote DC1 and turn it off.
Install Debian 12 and use backports.
This will get you Samba 4.21.4 , 4.19.5 is EOL from the Samba point of
view.
Join this as a new DC 

Rowland