[Samba] Repadmin fails when querying Samba server 4.7.6

Ing. Claudio Nicora claudio.nicora at gmail.com
Tue Jul 10 07:35:34 UTC 2018


Some other info about this issue.
It's the same as the one described in this bug: 
https://bugzilla.samba.org/show_bug.cgi?id=11415

It seems that replication from Win2008R2 --> Samba works...

****************************************************************
# samba-tool drs showrepl

==== INBOUND NEIGHBORS ====

CN=Schema,CN=Configuration,DC=SAMDOM,DC=IT
         Default-First-Site-Name\SRVWIN via RPC
                 DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
                 Last attempt @ Tue Jul 10 09:17:08 2018 CEST was successful
                 0 consecutive failure(s).
                 Last success @ Tue Jul 10 09:17:08 2018 CEST

CN=Configuration,DC=SAMDOM,DC=IT
         Default-First-Site-Name\SRVWIN via RPC
                 DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
                 Last attempt @ Tue Jul 10 09:17:08 2018 CEST was successful
                 0 consecutive failure(s).
                 Last success @ Tue Jul 10 09:17:08 2018 CEST

DC=ForestDnsZones,DC=SAMDOM,DC=IT
         Default-First-Site-Name\SRVWIN via RPC
                 DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
                 Last attempt @ Tue Jul 10 09:20:01 2018 CEST was successful
                 0 consecutive failure(s).
                 Last success @ Tue Jul 10 09:20:01 2018 CEST

DC=DomainDnsZones,DC=SAMDOM,DC=IT
         Default-First-Site-Name\SRVWIN via RPC
                 DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
                 Last attempt @ Tue Jul 10 09:17:08 2018 CEST was successful
                 0 consecutive failure(s).
                 Last success @ Tue Jul 10 09:17:08 2018 CEST

DC=SAMDOM,DC=IT
         Default-First-Site-Name\SRVWIN via RPC
                 DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
                 Last attempt @ Tue Jul 10 09:20:35 2018 CEST was successful
                 0 consecutive failure(s).
                 Last success @ Tue Jul 10 09:20:35 2018 CEST

==== OUTBOUND NEIGHBORS ====

CN=Schema,CN=Configuration,DC=SAMDOM,DC=IT
         Default-First-Site-Name\SRVWIN via RPC
                 DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
                 Last attempt @ Mon Jul  9 22:16:58 2018 CEST was successful
                 0 consecutive failure(s).
                 Last success @ Mon Jul  9 22:16:58 2018 CEST

CN=Configuration,DC=SAMDOM,DC=IT
         Default-First-Site-Name\SRVWIN via RPC
                 DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
                 Last attempt @ Tue Jul 10 09:12:16 2018 CEST was successful
                 0 consecutive failure(s).
                 Last success @ Tue Jul 10 09:12:16 2018 CEST

DC=ForestDnsZones,DC=SAMDOM,DC=IT
         Default-First-Site-Name\SRVWIN via RPC
                 DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
                 Last attempt @ Tue Jul 10 08:59:05 2018 CEST was successful
                 0 consecutive failure(s).
                 Last success @ Tue Jul 10 08:59:05 2018 CEST

DC=DomainDnsZones,DC=SAMDOM,DC=IT
         Default-First-Site-Name\SRVWIN via RPC
                 DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
                 Last attempt @ Mon Jul  9 22:16:58 2018 CEST was successful
                 0 consecutive failure(s).
                 Last success @ Mon Jul  9 22:16:58 2018 CEST

DC=SAMDOM,DC=IT
         Default-First-Site-Name\SRVWIN via RPC
                 DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
                 Last attempt @ Tue Jul 10 08:31:27 2018 CEST was successful
                 0 consecutive failure(s).
                 Last success @ Tue Jul 10 08:31:27 2018 CEST

==== KCC CONNECTION OBJECTS ====

Connection --
         Connection name: d7373eb1-82b4-4509-a063-fcdac7b194d9
         Enabled        : TRUE
         Server DNS name : SRVWIN.samdom.local
         Server DN name  : CN=NTDS 
Settings,CN=SRVWIN,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=SAMDOM,DC=IT
                 TransportType: RPC
                 options: 0x00000001
Warning: No NC replicated for Connection!

****************************************************************
...while Samba --> Win2008R2 doesnt:

PS C:\Users\Administrator.SAMDOM> repadmin /showrepl

Repadmin: running command /showrepl against full DC localhost
Default-First-Site-Name\SRVWIN
DSA Options: IS_GC
Site Options: (none)
DSA object GUID: 237cdbec-2e42-4b36-b571-eea51daaa535
DSA invocationID: 6627c041-b55c-4067-9e9b-e7da63be664d

==== INBOUND NEIGHBORS ======================================

DC=SAMDOM,DC=LOCAL
     Default-First-Site-Name\SRVSAMBA via RPC
         DSA object GUID: 8d7e07b2-8e53-4338-bbf7-dfbf866d962d
         Last attempt @ 2018-07-10 08:50:33 failed, result 8418 (0x20e2):
             The replication operation failed because of a schema 
mismatch between the servers involved.
         3 consecutive failure(s).
         Last success @ 2018-07-08 23:18:10.

CN=Configuration,DC=SAMDOM,DC=LOCAL
     Default-First-Site-Name\SRVSAMBA via RPC
         DSA object GUID: 8d7e07b2-8e53-4338-bbf7-dfbf866d962d
         Last attempt @ 2018-07-10 09:12:15 was successful.

CN=Schema,CN=Configuration,DC=SAMDOM,DC=LOCAL
     Default-First-Site-Name\SRVSAMBA via RPC
         DSA object GUID: 8d7e07b2-8e53-4338-bbf7-dfbf866d962d
         Last attempt @ 2018-07-10 08:50:33 was successful.

DC=DomainDnsZones,DC=SAMDOM,DC=LOCAL
     Default-First-Site-Name\SRVSAMBA via RPC
         DSA object GUID: 8d7e07b2-8e53-4338-bbf7-dfbf866d962d
         Last attempt @ 2018-07-10 08:50:32 was successful.

DC=ForestDnsZones,DC=SAMDOM,DC=LOCAL
     Default-First-Site-Name\SRVSAMBA via RPC
         DSA object GUID: 8d7e07b2-8e53-4338-bbf7-dfbf866d962d
         Last attempt @ 2018-07-10 08:59:04 was successful.

Source: Default-First-Site-Name\SRVSAMBA
******* 3 CONSECUTIVE FAILURES since 2018-07-08 23:18:10
Last error: 8418 (0x20e2):
             The replication operation failed because of a schema 
mismatch between the servers involved.

****************************************************************

Shall I join to that bug report?
If yes, is there someone here able to create a bugzilla accout for me or 
shall I send a specific request to bugzilla-maintenance at samba.org?



Il 09/07/2018 22:57, Ing. Claudio Nicora ha scritto:
> I'm trying to fix a replication error that occurs between Win2008R2 
> (srvwin) and Samba 4.7.6 DCs (srvsamba).
> Event viewer on Win2008R2 server reports that synchronization failed 
> on a specific Computer object because of schema version misalignment 
> between servers.




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