[Samba] samba3 and samba4 in the same domain?

Andrew Bartlett abartlet at samba.org
Mon May 10 19:08:44 MDT 2010

On Mon, 2010-05-10 at 14:40 +0200, Tomasz Chmielewski wrote:
> I have a Samba3 + OpenLDAP installation.
> How can I make Samba4 running on a different server be in the same 
> domain, have the same users etc.?

I presume you mean mixing both Samba3 and Samba4 domain controllers in
one domain?  This is not possible.  Any upgrade to samba4 would prevent
you running a Samba3 DC.  We don't support 'mixed mode' like that.

We also don't support hosting Samba4 on a 'unix like' LDAP server
layout.  The schema is the AD schema.  (FreeIPA is trying to create a
setup with a unix-like schema, but you will have to ask them about their

We also don't yet have good upgrade scripts from Samba3.  It can be
done, but a lot of the task will be manual. 


Andrew Bartlett

Andrew Bartlett                                http://samba.org/~abartlet/
Authentication Developer, Samba Team           http://samba.org
Samba Developer, Cisco Inc.

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