[Samba] Member can't join DC2 (The specified network name is no longer available)

[Rowland Penny]

On Thu, 24 Apr 2025 14:10:47 +0100
Luis Peromarta via samba <samba at lists.samba.org> wrote:

> We’ve removed the possibility of a bad DC2.
> 
> If all else seems OK, I am running out of ideas.
> 

Okay, this what I would do:

First carry out an ldap search in AD for DC2, just to make sure that
there are no leftovers. next, using Debian 12 with Samba from backports
(this gets you Samba 4.21.5) join a second DC at your first place (note
I say 'place' not 'site', you are not using 'sites'). If this works,
then you are a step forward.

Once you are sure everything is working correctly at your first place,
read this:

https://wiki.samba.org/index.php/Active_Directory_Sites

Then setup a second site for your second place.
Now attempt to join a new DC at your second site, do not point to a
specific DC with the 'samba-tool domain join' command, but do specify
the 'site' (see 'samba-tool domain join --help' for more info).

If that works then great, you can now add a second DC at your second site.
If it doesn't, then post any and all errors.

Rowland