[Samba] Unable to join samba4 to AD as a DC

[Michael Brown]

Hello,

I'm trying to get samba4 up and running as a DC in a lab environment.

I have a freshly installed AD environment (W2012R2 servers, W2008R2 
functional level) and I'm trying to join samba4 to it as a domain 
controller.

When I try, I get this:
# samba-tool domain join ad.netdirect.ca DC -Uadministrator 
--realm=AD.NETDIRECT.CA -W AD
Finding a writeable DC for domain 'ad.netdirect.ca'
Found DC AD2.ad.netdirect.ca
Password for [AD\administrator]:
workgroup is AD
realm is ad.netdirect.ca
checking sAMAccountName
Adding CN=SAMBA1,OU=Domain Controllers,DC=ad,DC=netdirect,DC=ca
Adding 
CN=SAMBA1,CN=Servers,CN=Lab,CN=Sites,CN=Configuration,DC=ad,DC=netdirect,DC=ca
Adding CN=NTDS 
Settings,CN=SAMBA1,CN=Servers,CN=Lab,CN=Sites,CN=Configuration,DC=ad,DC=netdirect,DC=ca
Join failed - cleaning up
checking sAMAccountName
Deleted CN=SAMBA1,OU=Domain Controllers,DC=ad,DC=netdirect,DC=ca
Deleted 
CN=SAMBA1,CN=Servers,CN=Lab,CN=Sites,CN=Configuration,DC=ad,DC=netdirect,DC=ca
ERROR(<type 'exceptions.AttributeError'>): uncaught exception - 
'drsuapi.DsBindInfoFallBack' object has no attribute 'supported_extensions'
   File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", 
line 175, in _run
     return self.run(*args, **kwargs)
   File "/usr/lib/python2.7/dist-packages/samba/netcmd/domain.py", line 
552, in run
     machinepass=machinepass, use_ntvfs=use_ntvfs, dns_backend=dns_backend)
   File "/usr/lib/python2.7/dist-packages/samba/join.py", line 1104, in 
join_DC
     ctx.do_join()
   File "/usr/lib/python2.7/dist-packages/samba/join.py", line 1007, in 
do_join
     ctx.join_add_objects()
   File "/usr/lib/python2.7/dist-packages/samba/join.py", line 525, in 
join_add_objects
     ctx.join_add_ntdsdsa()
   File "/usr/lib/python2.7/dist-packages/samba/join.py", line 458, in 
join_add_ntdsdsa
     ctx.DsAddEntry([rec])
   File "/usr/lib/python2.7/dist-packages/samba/join.py", line 368, in 
DsAddEntry
     ctx.drsuapi_connect()
   File "/usr/lib/python2.7/dist-packages/samba/join.py", line 347, in 
drsuapi_connect
     (ctx.drsuapi_handle, ctx.bind_supported_extensions) = 
drs_utils.drs_DsBind(ctx.drsuapi)
   File "/usr/lib/python2.7/dist-packages/samba/drs_utils.py", line 144, 
in drs_DsBind
     return (handle, info.info.supported_extensions)

I notice that Mauricio Alverez had this problem before[1] but nobody 
replied.

I've tried Ubuntu 12.04.03 (which couldn't even *install*), Ubuntu 13.04 
(4.0.0+dfsg1-1ubuntu1) and Ubuntu 13.10 (4.0.3+dfsg1-0.1ubuntu1).

Both give the same error.

I then tried adding the Services for Unix extension (which I don't even 
*know* if I did correctly*) to AD as a lark, but it didn't change anything.

So... anyone have ideas what's going wrong here?

M.

[1]: http://www.spinics.net/lists/samba/msg110409.html

-- 
Michael Brown               | `One of the main causes of the fall of
Systems Consultant          | the Roman Empire was that, lacking zero,
Net Direct Inc.             | they had no way to indicate successful
?: +1 519 883 1172 x5106    | termination of their C programs.' - Firth