[Samba] Migration to Samba 4

Martinx - ジェームズ thiagocmartinsc at gmail.com
Tue Oct 28 17:24:06 MDT 2014


In fact, at your new Samba4 AD DC, if you disable NetBIOS, then, it
will not conflict with old NT-Like Domain (which have NetBIOS).

So, the only way to join your new Samba 4 AD DC domain is by
configuring the DNS, otherwise, it will stay there, quiet...

Am I right?!

BTW, I did more or less something like this here in my company, the
only difference was that I was migrating "MYDOM" from W2k8R2 (with
NetBIOS) to Samba4 (without NetBIOS).

Also, I did not copied the SID from old MYDOM, to new MYDOM, in fact,
they are different.

Disabling Netbios in smb.conf (everywhere, DC, hosts, members,
workstations, etc);

--- smb.conf ---
        disable netbios = yes
        smb ports = 445

That's it!


On 28 October 2014 14:54, Marc Muehlfeld <mmuehlfeld at samba.org> wrote:
> Hello Chris,
> Am 27.10.2014 um 23:17 schrieb Sonic:
>> Currently have (and working for years) a Samba 3 PDC that also acts as
>> a file server and a print server. Would like to migrate the DC duties
>> only (at this time) to a Samba 4 AD on a new box without disturbing
>> user profiles (all SIDs, etc. remain the same), domain member joins
>> etc. Basically somewhat like an upgrade but on a new box with a new
>> name and then demoting the old PDC to a member server to seamlessly
>> continue its file and print serving duties.
>> I'm looking for a series of proper steps to accomplish this with as
>> little interruption and as much safety as possible. If anyone has done
>> this and can provide steps or a pointer in the proper direction it
>> would be greatly appreciated.
> This is possible. But you should calculate a downtime for the migration,
> because you can't have the PDC and a AD DC for the same domain together
> online.
> And of course you should test this before in a separate environment.
> Because if your clients have seen an AD DC of a domain, they won't logon
> to an NT4 PDC of that domain any more.
> Documentation you can find here: https://wiki.samba.org
> E. g.
> https://wiki.samba.org/index.php/Samba_AD_DC_HOWTO
> https://wiki.samba.org/index.php/Samba_Classic_Upgrade_%28NT4-style_domain_to_AD%29
> The old PDC can't be demoted to an AD Member. Remove the databases and
> adapt the config for Member Server (see Wiki).
> Regards,
> Marc
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