[Samba] Change Netbios name during classicupgrade?

[Rowland Penny]

On Mon, 16 Oct 2017 17:37:36 +0200
Sami Chibani via samba <samba at lists.samba.org> wrote:

> Hello Samba list!
> 
> Well, my situation is quite the same than this one from a previous
> post:
> 
> https://lists.samba.org/archive/samba/2017-May/208201.html
> 
> I have to make a classicupgrade from a Samba 3 NT server to Samba 4
> AD, and meanwhile the office name changed, so I would try to profit
> of this upgrade to change domain name.
> 
> So far from the different tests i've made, i could run the 
> classicupgrade process successfully with the old domain name, and
> also could run it successfully when i set the "realm" value of
> smb.conf to the new domain name.
> 
> but whenever i try to change the Netbios name ("workgroup" of
> smb.conf)

'workgroup' is not the netbios name, it is the NetBIOS domain name.
The workgroup should also not have a dot in it, 'DOMAIN.LAN' looks
suspiciously like a dns and realm name.  

>, I instantly lose all my members. Or, more precisely, the
> script finishes, but no account is imported.
> 
> 
> smb.conf before classicupgrade:
> 
> [global]
> 
>      netbios name = AD
> 
>      workgroup = DOMAIN.LAN
> 
> 
> smb.conf after classicupgrade:
> 
> [global]
> 
>      netbios name = SRV-AD

Would 'srv-ad' be the hostname of the computer ?

> 
>      workgroup = DOMAIN.LAN # ==> this one i can't change otherwise 
> upgrade doesn't catch up members
> 
>      realm = NEWDOMAIN.LAN
> 
> 
> I arrived not long ago in this office and didn't set up the old Samba
> 3 server, so there might be some misconfiguration leading to this
> fail, but not sure how to determine the source of the issue.
> 
> When i change workgroup, the ouput of a search, whether in pdbedit or 
> during classicupgrade is:
> 
> #pdbedit -L
> 
> sid S-1-5-21-1905493267-1041818301-753029000-19578 does not belong to 
> our domain
> 
> [...]
> 
> but when i search for a specific user, I can list it:
> 
> #pdbedit -L user
> 
> user:8536:User Name
> 
> I presume it's SID related and changing workgroup changed domain SID, 
> but don't know how to avoid this.
> 
> Samba 3 version: 3.6.12
> 
> What else to say? 

Lets start with you posting the [global] part of the smb.conf before
you did anything. 


>If it can help, I noticed that winbind was not 
> installed on the server;
> 
> #systemctl status winbind
> winbind.service
>            Loaded: error (Reason: No such file or directory)
>            Active: inactive (dead)
> 

Looks like you have fallen for the 'Debian nolonger installs winbind
when you install samba' feature. You need to install winbind manually.

Rowland