[Samba] Rename domain

[Tim Beale]

Hi,

I'm not sure the domain rename tool will solve your problem.

Currently the rename tool doesn't support the permanent/long-term rename
of a domain. We'd like to support this eventually, but currently the
tool doesn't handle updating the GPO files at all. Currently the
use-cases that the tool supports are: creating a realistic
lab-domain/pre-production testing environment, and providing a
temporary/alternate domain for disaster recovery. You can read more
about the tool here:
https://wiki.samba.org/index.php/Domain_rename_tool
https://wiki.samba.org/index.php/Back_up_and_Restoring_a_Samba_AD_DC

Secondly, we've only been testing the tool against fairly recent Samba
releases. I'm not sure how well it would run against a migrated 3.x->4.x
domain.

Having said that, you could always try running it and see if it works.

Cheers,
Tim


On 04/10/18 04:29, Rowland Penny via samba wrote:
> On Wed, 3 Oct 2018 16:54:02 +0200
> Philippe Maladjian via samba <samba at lists.samba.org> wrote:
>
>> *Philippe MALADJIAN
>> Responsable informatique | administrateur système*
>> Ligne directe : +33 (0)4 72 14 50 66 | pmaladjian at hilaire.fr 
>> <mailto:pmaladjian at hilaire.fr>
>>
>>
>> 	
>>
>> Le 03/10/2018 à 16:33, Rowland Penny via samba a écrit :
>>> On Wed, 3 Oct 2018 16:01:33 +0200
>>> Philippe Maladjian via samba <samba at lists.samba.org> wrote:
>>>
>>>> Hello, I realize the preparation of the migration from samba 3 to
>>>> samba 4. For the moment the test platform is functional at 80%.
>>>>
>>>> I realize a problem. At the implementation of samba 3 in NT mode
>>>> (more than 10 years ago) I chose netbios name dom.masociete and the
>>>> same DNS domain name.
>>> Even then, a dot in a workgroup name wasn't recommended.
>> That's what I notice from reading but there are 10 I was a beginner ;)
>>>> With the migration the domain dns becomes "dom"
>>>> and according to my first researches I will quickly encounter
>>>> problems if I need subdomain in the future. The ideal would be
>>>> that I rename my domain in mycompany.local
>>> No, the ideal would be to use virtually anything but '.local'
>> masociete.lan?
>>
>>>> knowing that our Internet domain
>>>> name is mycompany.fr but it is not us who manage it.
>>>>
>>>> I saw that with the arrival of the 4.9.x it is possible to rename a
>>>> domain, but is it feasible in my case? If yes, once the domain is
>>>> renamed, will I have to go out and add the existing machines in the
>>>> domain?
>>> This is so new, I am not sure, but I believe it would, you will have
>>> to change the DNS domain on all the machines, unless it is set by
>>> DHCP.
>>>
>>> It might just be easier and better to set up a new domain ;-)
>> At dhcp level I have as configuration
>>
>> ----------
>>
>> option domain-search code 119 = text;
>> option wpad code 252 = text;
>>   option domain-name "dom.masociete";
>> option domain-search "\003dom\007masociete\000";
>> option wpad "\n";
>>
>> -------------
>>
>> but I do not see how dhcp could impose windows pc to use another
>> domain to connect?
> I think you misunderstand what I was trying to say, If you change the
> domain name, you also need to change the DNS domain, the REALM is the
> same as the DNS domain, but in uppercase.
> As I said, this is very new and I haven't had to use it yet, but, from
> my understanding, if your dns domain is samdom.example.com and you
> rename the domain, every instance of 'samdom', 'example' and 'com' will
> get changed to match your new name.
>
> Rowland
>
>> When I add a machine to the domain I go through the machine's bone
>> and change the "Member of" setting as in this picture: 
>> https://s10629.pcdn.co/wp-content/pictures/2009/11/joindomainwindows7.png
>>
> That is joining the domain, but if your clients get their DNS domain
> via DHCP and you rename the domain, everything should match and you
> probably wont have to rejoin, but I don't really know.
>
> Rowland
>
>