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Noël Köthe

2018-Oct-18 07:07 UTC

[Samba] AD error 8418: The replication operation failed because of a schema mismatch between the servers involved (WERR_DS_DRA_SCHEMA_MISMATCH)

Hello,

we are running a 2008 R2 AD (schema 47) with two DCs:
* dc-win (Windows 2008 R2)
* dc-samba (samba 4.5.12, Debian stable)

Since some weeks replication works only from dc-win to dc-samba but not
in the other direction.:(

root at dc-samba:~# samba-tool drs replicate dc-samba dc-win dc=credativ,dc=de
Replicate from dc-win to dc-samba was successful.
root at dc-samba:~# samba-tool drs replicate dc-win dc-samba dc=credativ,dc=de
ERROR(<class 'samba.drs_utils.drsException'>): DsReplicaSync
failed - drsException: DsReplicaSync failed (8418,
'WERR_DS_DRA_SCHEMA_MISMATCH')
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/drs.py", line
368, in run
    drs_utils.sendDsReplicaSync(server_bind, server_bind_handle,
source_dsa_guid, NC, req_options)
  File "/usr/lib/python2.7/dist-packages/samba/drs_utils.py", line 83,
in sendDsReplicaSync
    raise drsException("DsReplicaSync failed %s" % estr)

I found the same problem in the mailinglist but I could find a solving
hint:
https://lists.samba.org/archive/samba-technical/2016-February/112019.html

showrepl says everything is OK:

# samba-tool drs showrepl
Default-First-Site-Name\DC-SAMBA
DSA Options: 0x00000001
DSA object GUID: 3715fa00-bdca-4782-a953-6d4b1fb08275
DSA invocationId: a2907a5d-6e53-42ce-a6e4-402b4e161313

==== INBOUND NEIGHBORS ===
CN=Configuration,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Thu Oct 18 08:02:22 2018 CEST was successful
                0 consecutive failure(s).
                Last success @ Thu Oct 18 08:02:22 2018 CEST

DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Thu Oct 18 08:05:46 2018 CEST was successful
                0 consecutive failure(s).
                Last success @ Thu Oct 18 08:05:46 2018 CEST

CN=Schema,CN=Configuration,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Thu Oct 18 08:02:22 2018 CEST was successful
                0 consecutive failure(s).
                Last success @ Thu Oct 18 08:02:22 2018 CEST

DC=DomainDnsZones,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Thu Oct 18 08:05:49 2018 CEST was successful
                0 consecutive failure(s).
                Last success @ Thu Oct 18 08:05:49 2018 CEST

DC=ForestDnsZones,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Thu Oct 18 08:02:22 2018 CEST was successful
                0 consecutive failure(s).
                Last success @ Thu Oct 18 08:02:22 2018 CEST

==== OUTBOUND NEIGHBORS ===
CN=Configuration,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Thu Oct 18 07:57:26 2018 CEST was successful
                0 consecutive failure(s).
                Last success @ Thu Oct 18 07:57:26 2018 CEST

DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Thu Oct 18 07:59:31 2018 CEST was successful
                0 consecutive failure(s).
                Last success @ Thu Oct 18 07:59:31 2018 CEST

CN=Schema,CN=Configuration,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Thu Oct 18 06:07:12 2018 CEST was successful
                0 consecutive failure(s).
                Last success @ Thu Oct 18 06:07:12 2018 CEST

DC=DomainDnsZones,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Thu Oct 18 08:05:37 2018 CEST was successful
                0 consecutive failure(s).
                Last success @ Thu Oct 18 08:05:37 2018 CEST

DC=ForestDnsZones,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Thu Oct 18 06:07:12 2018 CEST was successful
                0 consecutive failure(s).
                Last success @ Thu Oct 18 06:07:12 2018 CEST

==== KCC CONNECTION OBJECTS ===
Connection --
        Connection name: f34fb31f-32e9-42a4-af24-d305268446a5
        Enabled        : TRUE
        Server DNS name : dc-win.credativ.de
        Server DN name  : CN=NTDS
Settings,CN=DC-WIN,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=credativ,DC=de
                TransportType: RPC
                options: 0x00000001
Warning: No NC replicated for Connection!

Any hint how to solve this?

Thanks alot for your work.

-- 
Regards
        Noël Köthe
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Andrew Bartlett

2018-Oct-18 07:42 UTC

head link

[Samba] AD error 8418: The replication operation failed because of a schema mismatch between the servers involved (WERR_DS_DRA_SCHEMA_MISMATCH)

On Thu, 2018-10-18 at 09:07 +0200, Noël Köthe via samba
wrote:> Hello,
> 
> we are running a 2008 R2 AD (schema 47) with two DCs:
> * dc-win (Windows 2008 R2)
> * dc-samba (samba 4.5.12, Debian stable)
> 
> Since some weeks replication works only from dc-win to dc-samba but not
> in the other direction.:(
I've seen this before.
> Any hint how to solve this?
> 
> Thanks alot for your work.
Start with a current Samba.  Schema replication, while not perfect, is
improved. 

Andrew Bartlett

-- 
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba

Matthias Gassner

2018-Oct-18 09:15 UTC

head link

[Samba] AD error 8418: The replication operation failed because of a schema mismatch between the servers involved (WERR_DS_DRA_SCHEMA_MISMATCH)

On 2018-10-18 09:42, Andrew Bartlett via samba wrote:> On Thu, 2018-10-18 at 09:07 +0200, Noël Köthe via samba wrote:
>> Hello,
>>
>> we are running a 2008 R2 AD (schema 47) with two DCs:
>> * dc-win (Windows 2008 R2)
>> * dc-samba (samba 4.5.12, Debian stable)
>>
>> Since some weeks replication works only from dc-win to dc-samba but not
>> in the other direction.:(
> I've seen this before.
>
>> Any hint how to solve this?
>>
>> Thanks alot for your work.
> Start with a current Samba.  Schema replication, while not perfect, is
> improved. 
>
> Andrew Bartlett
>hi
i had this problem to, in my case the the characters in the LDAP paths
was not in capital.

like:
linux: dnwindows: DN
there is no fix as i know, the solution would be remove the linux DC(s)
and rejoin them to the Windows DC.

Matthias

Noël Köthe

2018-Dec-10 12:42 UTC

head link

[Samba] AD error 8418: The replication operation failed because of a schema mismatch between the servers involved (WERR_DS_DRA_SCHEMA_MISMATCH) #11388

Hello Andrew,

Am Donnerstag, den 18.10.2018, 20:42 +1300 schrieb Andrew Bartlett:
> > we are running a 2008 R2 AD (schema 47) with two DCs:
> > * dc-win (Windows 2008 R2)
> > * dc-samba (samba 4.5.12, Debian stable)
> > 
> > Since some weeks replication works only from dc-win to dc-samba but
not
> > in the other direction.:(
> 
> I've seen this before.
I found it in bugzilla: :-)
https://bugzilla.samba.org/show_bug.cgi?id=11388
> > Any hint how to solve this?
> > 
> > Thanks alot for your work.
> 
> Start with a current Samba.  Schema replication, while not perfect, is
> improved. 
I updated the system dc-samba yesterday to samba 4.9.2 (I'm aware of
4.9.3 for security but Debian package will come later) but the
replication error is still the same:

# samba-tool -V
4.9.2-Debian

# samba-tool drs showrepl
Default-First-Site-Name\DC-SAMBA
DSA Options: 0x00000001
DSA object GUID: 3715fa00-bdca-4782-a953-6d4b1fb08275
DSA invocationId: a2907a5d-6e53-42ce-a6e4-402b4e161313

==== INBOUND NEIGHBORS ===
CN=Configuration,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Mon Dec 10 13:31:07 2018 CET was successful
                0 consecutive failure(s).
                Last success @ Mon Dec 10 13:31:07 2018 CET

DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Mon Dec 10 13:33:11 2018 CET was successful
                0 consecutive failure(s).
                Last success @ Mon Dec 10 13:33:11 2018 CET

CN=Schema,CN=Configuration,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Mon Dec 10 13:31:07 2018 CET was successful
                0 consecutive failure(s).
                Last success @ Mon Dec 10 13:31:07 2018 CET

DC=DomainDnsZones,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Mon Dec 10 13:31:07 2018 CET was successful
                0 consecutive failure(s).
                Last success @ Mon Dec 10 13:31:07 2018 CET

DC=ForestDnsZones,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Mon Dec 10 13:31:07 2018 CET was successful
                0 consecutive failure(s).
                Last success @ Mon Dec 10 13:31:07 2018 CET

==== OUTBOUND NEIGHBORS ===
CN=Configuration,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Mon Dec 10 12:24:01 2018 CET was successful
                0 consecutive failure(s).
                Last success @ Mon Dec 10 12:24:01 2018 CET

DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Mon Dec 10 12:53:44 2018 CET was successful
                0 consecutive failure(s).
                Last success @ Mon Dec 10 12:53:44 2018 CET

CN=Schema,CN=Configuration,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Sun Dec  2 14:00:33 2018 CET was successful
                0 consecutive failure(s).
                Last success @ Sun Dec  2 14:00:33 2018 CET

DC=DomainDnsZones,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Mon Dec 10 13:28:32 2018 CET was successful
                0 consecutive failure(s).
                Last success @ Mon Dec 10 13:28:32 2018 CET

DC=ForestDnsZones,DC=credativ,DC=de
        Default-First-Site-Name\DC-WIN via RPC
                DSA object GUID: 65b05486-16e3-4b5b-9483-f568e6cdeef5
                Last attempt @ Sun Dec  2 14:00:33 2018 CET was successful
                0 consecutive failure(s).
                Last success @ Sun Dec  2 14:00:33 2018 CET

==== KCC CONNECTION OBJECTS ===
Connection --
        Connection name: f34fb31f-32e9-42a4-af24-d305268446a5
        Enabled        : TRUE
        Server DNS name : dc-win.credativ.de
        Server DN name  : CN=NTDS
Settings,CN=DC-WIN,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=credativ,DC=de
                TransportType: RPC
                options: 0x00000001
Warning: No NC replicated for Connection!

# samba-tool drs replicate dc-samba dc-win dc=credativ,dc=de
Replicate from dc-win to dc-samba was successful.

# samba-tool drs replicate dc-win dc-samba dc=credativ,dc=de
ERROR(<class 'samba.drs_utils.drsException'>): DsReplicaSync
failed - drsException: DsReplicaSync failed (8418,
'WERR_DS_DRA_SCHEMA_MISMATCH')
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/drs.py", line
568, in run
    drs_utils.sendDsReplicaSync(server_bind, server_bind_handle,
source_dsa_guid, NC, req_options)
  File "/usr/lib/python2.7/dist-packages/samba/drs_utils.py", line 88,
in sendDsReplicaSync
    raise drsException("DsReplicaSync failed %s" % estr)

I will add the information to the #11388 and next step is to add an
additional windows DC to find if this can replicate.

Regards

	Noël
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