[Samba] Problems attaching Windows server as secondary DC.
simon+samba at matthews.eu
simon+samba at matthews.eu
Sat Apr 20 17:40:01 MDT 2013
On Sat, 20 Apr 2013, Matthieu Patou wrote:
> On 04/13/2013 04:38 PM, simon+samba at matthews.eu wrote:
>>
>> I have my Samba4 up and running. I was able to get a Windows 2012 server
>> to join the samba4 domain.
>>
>> However, I have not been able to get the Windows server to promote itself
>> to a secondary DC.
>>
>> I would appreciate any suggestions on debugging this issue.
>>
>> One the Server 2012 machine, in the "prerequisites check", I see the
>> following message:
>> "Verification or prerequisites for Active Directory preparation failed
>> ......
>> Exception: THe RPC server is unavailable. ....."
>> Adprep could not retrieve data from the server <servername> ..."
>>
>> The servername is correct and resolves to my samba4 server.
>>
>> On the Samba4 server, I see the following in the logs:
>> [2013/04/12 12:02:30, 3]
>> ../auth/ntlmssp/ntlmssp_util.c:34(debug_ntlmssp_flags)
>> Got NTLMSSP neg_flags=0xe2088235
>> [2013/04/12 12:02:30, 3]
>> ../source4/rpc_server/dcerpc_server.c:961(dcesrv_request)
>> Warning: 60 extra bytes in incoming RPC request
>> [2013/04/12 12:02:30, 3]
>> ../source4/rpc_server/drsuapi/dcesrv_drsuapi.c:74(dcesrv_drsuapi_DsBind)
>> ../source4/rpc_server/drsuapi/dcesrv_drsuapi.c:74: doing DsBind with
>> system_session
>> [2013/04/12 12:02:33, 3]
>> ../source4/smbd/service_stream.c:63(stream_terminate_connection)
>> Terminating connection - 'NT_STATUS_CONNECTION_DISCONNECTED'
>> [2013/04/12 12:02:33, 3]
>> ../source4/smbd/process_single.c:114(single_terminate)
>> single_terminate: reason[NT_STATUS_CONNECTION_DISCONNECTED]
>>
>>
>> Any ideas?
> We don't support Windows 2012 yet, for multiple reasons:
>
> In order to have a Windows 2012 DC you must have a 2012 compliant schema, up
> to Windows 2008R2 included the way to do was to run programs provided by
> Microsoft on existing DC to upgrade the schema and do some adaptation to the
> database. With windows 2012 they have introduced a way to do it also remotely
> via webservices that we don't support and we dont' plan to support. So usual
> upgrade path is not possible.
>
> Up to now we have asked and received new schema from Microsoft after each new
> AD product but for 2012 we didn't really asked so we haven't received it yet,
> *if* we had it the way to go would be to run something like
> samba_upgradeprovision so that we would be able to add missing schema entries
> and modify needed objects, but this is not yet a solution (although it might
> be a much shorter delay before getting it).
>
> Last would be to add an older version of Windows (2003, 2008, 2008R2) to the
> domain and run the program to upgrade the schema, it won't work until you
> migrate schema master role to the newly added Windows DC. Then you might run
> into problems while synchronizing this is a known problem that we are working
> on and you'll face for sure if you try to join samba to a domain with a
> Windows 2012 schema.
Are you saying that, in addition to not being able to join a Windows 2012
server to a samba domain, the reverse will not work as well? I can't join
a Linux box to a Windows 2012 domain as a client (not as a DC, but just a
domain member)?
Simon
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