[Samba] Samba migration to a new server

Henri Brouchoud henri.brouchoud at cirad.fr
Wed Jan 12 22:33:58 MST 2011

Hi Helmut

Thanks for your answer. 

I have done a similar test some weeks ago without success. The client I
tested have lost the Domain membership but I am not sure it was shutdown at
the moment I switched from old to new server. 
In your case, has your new server a different DNS Name , IP address and
netbios name from the old one ?  

Actually, if there are only a few clients that have to be manually rejoinded
to the domain, it could be acceptable. The *ABSOLUTE* condition is that
every users keep their windows profile (so their Domain SID I guess) once
the switch has occurred. 

Thanks again.


>  -----Message d'origine-----
>  De : samba-bounces at lists.samba.org [mailto:samba-
>  bounces at lists.samba.org] De la part de Helmut Hullen
>  Envoyé : mercredi 12 janvier 2011 19:08
>  À : samba at lists.samba.org
>  Objet : Re: [Samba] Samba migration to a new server
>  Hallo, henri,
>  Du meintest am 12.01.11:
>  > Is it possible to migrate Samba to a new server without breaking
>  > Domain membership of all the clients ?
>  > I didn?t get any info on that issue, is there someone that has
>  > previous experience of doing that ? Or maybe a link to some relevant
>  > info ?
>  > I have currently a Samba 3.5.6 server that acts as a PDC and print
>  > Server, with tdbsam backend, no LDAP at all, no roaming profile. I
>  > have to migrate samba to a new server. Everything (Samba release,
>  > Domain Name, shares, ...) will remain the same except for the DNS
>  > name and IP address of the server, and the samba server netbios
>  name.
>  > What is the best way to proceed to make this migration as seamless
>  as
>  > possible for all users (more than 200 user accounts with more than
>  > 200 PC in the domain) ?
>  My usual way:
>  - copy/overwrite "/etc/samba" to the new machine
>  - copy/overwrite all user account and all machine account informations
>  (especially in "/etc/passwd" and "/etc/shadow") to the new machine
>  - Stop samba on both machines
>  - Shut off all Clients (that may be a bit neurotic ...)
>  - start samba on the new machine
>  - Start one client for testing
>  - if ok: start the other clients
>  Last friday a colleague and I have done these steps once more,
>  successfully.
>  Viele Gruesse!
>  Helmut
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