[Samba] Standalone Server User Import / Export

David Ayers ayers at fsfe.org
Thu Aug 8 19:42:02 UTC 2019

Am Freitag, den 09.08.2019, 07:08 +1200 schrieb Andrew Bartlett:
> On Thu, 2019-08-08 at 17:04 +0200, David Ayers via samba wrote:
> > Hello!
> > 
> > when using Samba [4.5.16-Debian] as standalone server in Windows
> > environment to allow certain users to access shares, we are
> > currently
> > using the default tdbsam backend with a bunch of users.
> > 
> > We now want to migrate the users from one standalone server to a
> > replacement server.  To migrate the users I expected to able to
> > export
> > the users (incl. passwords) into a file on one server, copy the
> > file
> > over to the new server and import the users there.  Specifically I
> > expected using:
> > 
> > old: pdbedit -e tdbsam:/root/samba.user.tdbexp
> > new: pdbedit -I tdbsam:/root/samba.user.tdbexp
> > 
> > would do the trick.  A file is created during the export.  The
> > import
> > does not complain and has a return value indicating success.  But
> > pdbedit -L (-v) does not list any of the imported users.
> Just copy (use tdbbackup for safety if you can't stop Samba) all the
> tdb files and put them in the same spot on the new server.  That is
> the
> easiest way to do this.
> My guess is that the domain sid has been re-randomised on the new
> server.  Dump that with 'net' (I forget the subcommand) and force it
> in again (it is stored in a host-name specific key in secrets.tdb).

I am not very familiar with the concept of a "domain" in the case of a
standalone server.

The new server is indeed simply a new installation with the smb.conf
edited to match the old one.  My goal is to transfer the users
including the passwords (which I have no knowledge of) from the old
server to the new server.

From your comment I deduce that this may not possible without actually
copying all tdb files directly.  Is that truly the case?


David Ayers - Team Austria
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