[Samba] Trouble demoting DC with broken replication
lp101
lingpanda101 at gmail.com
Thu May 8 08:11:47 MDT 2014
Remember to only remove traces of your demoted DC.
On 5/8/2014 9:58 AM, Andreas Oster wrote:
> Am 08.05.2014 15:30, schrieb lp101:
>> Hello,
>>
>> Remove all traces of the demoted DC from your DNS. Use Windows
>> ADUC module to remove the DC from the Domain Controllers OU. Use ADSI
>> to remove all traces of the NTDS files and demoted server. Be careful
>> using ADSI. Give it a few moments to allow the changes to replicate
>> across all your existing DC's.
>>
>> On 5/8/2014 9:06 AM, Andreas Oster wrote:
>>> Am 08.05.2014 15:03, schrieb Andreas Oster:
>>>> Hi all,
>>>>
>>>> I am currently struggling to remove one of our Samba4 DC from the
>>>> domain. Some time ago, adding a new Samba DC to our AD did not succeed
>>>> and I had to demote the new server again. After removal, replication on
>>>> one of the old/existing DCs got weird.
>>>>
>>>> /usr/local/samba/bin/samba-tool drs showrepl gives the following:
>>>>
>>>> Standardname-des-ersten-Standorts\dc02
>>>> DSA Options: 0x00000001
>>>> DSA object GUID: ef37f4de-a03c-493c-96f6-e521a5415d81
>>>> DSA invocationId: b0bc10b9-a67f-4550-8fbf-3dc9fbe6fecc
>>>>
>>>> ==== INBOUND NEIGHBORS ====
>>>>
>>>> DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc01 via RPC
>>>> DSA object GUID: c60bca82-df6e-409e-85c5-e2cc733691da
>>>> Last attempt @ Thu May 8 14:49:28 2014 CEST was
>>>> successful
>>>> 0 consecutive failure(s).
>>>> Last success @ Thu May 8 14:49:28 2014 CEST
>>>>
>>>> DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc03 via RPC
>>>> DSA object GUID: 94534f65-5d06-41f5-844d-a58a0bc03c93
>>>> Last attempt @ Thu May 8 14:49:24 2014 CEST was
>>>> successful
>>>> 0 consecutive failure(s).
>>>> Last success @ Thu May 8 14:49:24 2014 CEST
>>>>
>>>> DC=ForestDnsZones,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc01 via RPC
>>>> DSA object GUID: c60bca82-df6e-409e-85c5-e2cc733691da
>>>> Last attempt @ Thu May 8 14:48:50 2014 CEST was
>>>> successful
>>>> 0 consecutive failure(s).
>>>> Last success @ Thu May 8 14:48:50 2014 CEST
>>>>
>>>> DC=ForestDnsZones,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc03 via RPC
>>>> DSA object GUID: 94534f65-5d06-41f5-844d-a58a0bc03c93
>>>> Last attempt @ Thu May 8 14:48:51 2014 CEST was
>>>> successful
>>>> 0 consecutive failure(s).
>>>> Last success @ Thu May 8 14:48:51 2014 CEST
>>>>
>>>> CN=Configuration,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc01 via RPC
>>>> DSA object GUID: c60bca82-df6e-409e-85c5-e2cc733691da
>>>> Last attempt @ Thu May 8 14:48:54 2014 CEST was
>>>> successful
>>>> 0 consecutive failure(s).
>>>> Last success @ Thu May 8 14:48:54 2014 CEST
>>>>
>>>> CN=Configuration,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc03 via RPC
>>>> DSA object GUID: 94534f65-5d06-41f5-844d-a58a0bc03c93
>>>> Last attempt @ Thu May 8 14:48:55 2014 CEST was
>>>> successful
>>>> 0 consecutive failure(s).
>>>> Last success @ Thu May 8 14:48:55 2014 CEST
>>>>
>>>> DC=DomainDnsZones,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc01 via RPC
>>>> DSA object GUID: c60bca82-df6e-409e-85c5-e2cc733691da
>>>> Last attempt @ Thu May 8 14:50:01 2014 CEST was
>>>> successful
>>>> 0 consecutive failure(s).
>>>> Last success @ Thu May 8 14:50:01 2014 CEST
>>>>
>>>> DC=DomainDnsZones,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc03 via RPC
>>>> DSA object GUID: 94534f65-5d06-41f5-844d-a58a0bc03c93
>>>> Last attempt @ Thu May 8 14:50:02 2014 CEST was
>>>> successful
>>>> 0 consecutive failure(s).
>>>> Last success @ Thu May 8 14:50:02 2014 CEST
>>>>
>>>> CN=Schema,CN=Configuration,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc01 via RPC
>>>> DSA object GUID: c60bca82-df6e-409e-85c5-e2cc733691da
>>>> Last attempt @ Thu May 8 14:48:56 2014 CEST was
>>>> successful
>>>> 0 consecutive failure(s).
>>>> Last success @ Thu May 8 14:48:56 2014 CEST
>>>>
>>>> CN=Schema,CN=Configuration,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc03 via RPC
>>>> DSA object GUID: 94534f65-5d06-41f5-844d-a58a0bc03c93
>>>> Last attempt @ Thu May 8 14:48:56 2014 CEST was
>>>> successful
>>>> 0 consecutive failure(s).
>>>> Last success @ Thu May 8 14:48:56 2014 CEST
>>>>
>>>> ==== OUTBOUND NEIGHBORS ====
>>>>
>>>> DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:23db6774-c155-4e5f-a793-07e9c772ddc4,CN=dc03\0ADEL:bb22ce3e-2d94-47e2-aa29-11a2a0e4e2f3,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 23db6774-c155-4e5f-a793-07e9c772ddc4
>>>> Last attempt @ Thu May 8 14:51:59 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 1042908 consecutive failure(s).
>>>> Last success @ Tue Feb 11 10:00:38 2014 CET
>>>>
>>>> DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:1a890c41-4326-47c1-90c0-28f8e70801a7,CN=dc03\0ADEL:60bb6abe-2d08-4f5f-81db-787f6e23706b,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 1a890c41-4326-47c1-90c0-28f8e70801a7
>>>> Last attempt @ Thu May 8 14:51:59 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 1005465 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:8c0461e2-6f72-42be-98ab-ce175fc84653,CN=dc03\0ADEL:619df70c-abc9-4644-bff6-35809664bbd9,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 8c0461e2-6f72-42be-98ab-ce175fc84653
>>>> Last attempt @ Thu May 8 14:51:59 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 958484 consecutive failure(s).
>>>> Last success @ Sat Feb 15 12:56:47 2014 CET
>>>>
>>>> DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc03 via RPC
>>>> DSA object GUID: 94534f65-5d06-41f5-844d-a58a0bc03c93
>>>> Last attempt @ NTTIME(0) was successful
>>>> 0 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc01 via RPC
>>>> DSA object GUID: c60bca82-df6e-409e-85c5-e2cc733691da
>>>> Last attempt @ NTTIME(0) was successful
>>>> 0 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=ForestDnsZones,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:23db6774-c155-4e5f-a793-07e9c772ddc4,CN=dc03\0ADEL:bb22ce3e-2d94-47e2-aa29-11a2a0e4e2f3,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 23db6774-c155-4e5f-a793-07e9c772ddc4
>>>> Last attempt @ Thu May 8 14:51:58 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 1049436 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=ForestDnsZones,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:1a890c41-4326-47c1-90c0-28f8e70801a7,CN=dc03\0ADEL:60bb6abe-2d08-4f5f-81db-787f6e23706b,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 1a890c41-4326-47c1-90c0-28f8e70801a7
>>>> Last attempt @ Thu May 8 14:51:58 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 1012985 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=ForestDnsZones,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:8c0461e2-6f72-42be-98ab-ce175fc84653,CN=dc03\0ADEL:619df70c-abc9-4644-bff6-35809664bbd9,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 8c0461e2-6f72-42be-98ab-ce175fc84653
>>>> Last attempt @ Thu May 8 14:51:58 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 976997 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=ForestDnsZones,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc01 via RPC
>>>> DSA object GUID: c60bca82-df6e-409e-85c5-e2cc733691da
>>>> Last attempt @ NTTIME(0) was successful
>>>> 0 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=ForestDnsZones,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc03 via RPC
>>>> DSA object GUID: 94534f65-5d06-41f5-844d-a58a0bc03c93
>>>> Last attempt @ NTTIME(0) was successful
>>>> 0 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> CN=Configuration,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:23db6774-c155-4e5f-a793-07e9c772ddc4,CN=dc03\0ADEL:bb22ce3e-2d94-47e2-aa29-11a2a0e4e2f3,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 23db6774-c155-4e5f-a793-07e9c772ddc4
>>>> Last attempt @ Thu May 8 14:52:00 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 999198 consecutive failure(s).
>>>> Last success @ Tue Feb 11 10:00:39 2014 CET
>>>>
>>>> CN=Configuration,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:1a890c41-4326-47c1-90c0-28f8e70801a7,CN=dc03\0ADEL:60bb6abe-2d08-4f5f-81db-787f6e23706b,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 1a890c41-4326-47c1-90c0-28f8e70801a7
>>>> Last attempt @ Thu May 8 14:52:00 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 994163 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> CN=Configuration,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:8c0461e2-6f72-42be-98ab-ce175fc84653,CN=dc03\0ADEL:619df70c-abc9-4644-bff6-35809664bbd9,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 8c0461e2-6f72-42be-98ab-ce175fc84653
>>>> Last attempt @ Thu May 8 14:52:00 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 952835 consecutive failure(s).
>>>> Last success @ Sat Feb 15 12:56:42 2014 CET
>>>>
>>>> CN=Configuration,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc01 via RPC
>>>> DSA object GUID: c60bca82-df6e-409e-85c5-e2cc733691da
>>>> Last attempt @ NTTIME(0) was successful
>>>> 0 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> CN=Configuration,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc03 via RPC
>>>> DSA object GUID: 94534f65-5d06-41f5-844d-a58a0bc03c93
>>>> Last attempt @ NTTIME(0) was successful
>>>> 0 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=DomainDnsZones,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:23db6774-c155-4e5f-a793-07e9c772ddc4,CN=dc03\0ADEL:bb22ce3e-2d94-47e2-aa29-11a2a0e4e2f3,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 23db6774-c155-4e5f-a793-07e9c772ddc4
>>>> Last attempt @ Thu May 8 14:51:58 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 1009552 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=DomainDnsZones,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:1a890c41-4326-47c1-90c0-28f8e70801a7,CN=dc03\0ADEL:60bb6abe-2d08-4f5f-81db-787f6e23706b,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 1a890c41-4326-47c1-90c0-28f8e70801a7
>>>> Last attempt @ Thu May 8 14:51:58 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 1010074 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=DomainDnsZones,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:8c0461e2-6f72-42be-98ab-ce175fc84653,CN=dc03\0ADEL:619df70c-abc9-4644-bff6-35809664bbd9,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 8c0461e2-6f72-42be-98ab-ce175fc84653
>>>> Last attempt @ Thu May 8 14:51:59 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 958577 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=DomainDnsZones,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc01 via RPC
>>>> DSA object GUID: c60bca82-df6e-409e-85c5-e2cc733691da
>>>> Last attempt @ NTTIME(0) was successful
>>>> 0 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> DC=DomainDnsZones,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc03 via RPC
>>>> DSA object GUID: 94534f65-5d06-41f5-844d-a58a0bc03c93
>>>> Last attempt @ NTTIME(0) was successful
>>>> 0 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> CN=Schema,CN=Configuration,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:23db6774-c155-4e5f-a793-07e9c772ddc4,CN=dc03\0ADEL:bb22ce3e-2d94-47e2-aa29-11a2a0e4e2f3,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 23db6774-c155-4e5f-a793-07e9c772ddc4
>>>> Last attempt @ Thu May 8 14:52:00 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 975813 consecutive failure(s).
>>>> Last success @ Tue Feb 11 10:00:39 2014 CET
>>>>
>>>> CN=Schema,CN=Configuration,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:1a890c41-4326-47c1-90c0-28f8e70801a7,CN=dc03\0ADEL:60bb6abe-2d08-4f5f-81db-787f6e23706b,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 1a890c41-4326-47c1-90c0-28f8e70801a7
>>>> Last attempt @ Thu May 8 14:52:00 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 955526 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> CN=Schema,CN=Configuration,DC=samdom,DC=loc
>>>> NTDS DN: CN=NTDS
>>>> Settings\0ADEL:8c0461e2-6f72-42be-98ab-ce175fc84653,CN=dc03\0ADEL:619df70c-abc9-4644-bff6-35809664bbd9,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> DSA object GUID: 8c0461e2-6f72-42be-98ab-ce175fc84653
>>>> Last attempt @ Thu May 8 14:52:01 2014 CEST failed,
>>>> result 2 (WERR_BADFILE)
>>>> 892435 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> CN=Schema,CN=Configuration,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc03 via RPC
>>>> DSA object GUID: 94534f65-5d06-41f5-844d-a58a0bc03c93
>>>> Last attempt @ NTTIME(0) was successful
>>>> 0 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> CN=Schema,CN=Configuration,DC=samdom,DC=loc
>>>> Standardname-des-ersten-Standorts\dc01 via RPC
>>>> DSA object GUID: c60bca82-df6e-409e-85c5-e2cc733691da
>>>> Last attempt @ NTTIME(0) was successful
>>>> 0 consecutive failure(s).
>>>> Last success @ NTTIME(0)
>>>>
>>>> ==== KCC CONNECTION OBJECTS ====
>>>>
>>>> Connection --
>>>> Connection name: 7027ea76-3617-488d-90f6-93f73de15c79
>>>> Enabled : TRUE
>>>> Server DNS name : dc01.samdom.loc
>>>> Server DN name : CN=NTDS
>>>> Settings,CN=dc01,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> TransportType: RPC
>>>> options: 0x00000001
>>>> Warning: No NC replicated for Connection!
>>>> Connection --
>>>> Connection name: dc03
>>>> Enabled : TRUE
>>>> Server DNS name : dc03.samdom.loc
>>>> Server DN name : CN=NTDS
>>>> Settings,CN=dc03,CN=Servers,CN=Standardname-des-ersten-Standorts,CN=Sites,CN=Configuration,DC=samdom,DC=loc
>>>>
>>>> TransportType: RPC
>>>> options: 0x00000000
>>>> Warning: No NC replicated for Connection!
>>>>
>>>>
>>>> The \0ADEL: entries are the remains of the initial failed join of
>>>> dc03.
>>>> I searched the net for a solution to get rid of those entries but did
>>>> not find any useful information. My next idea was to also demote dc02.
>>>> Unfortunately after demoting dc02 those \0ADEL: entries showed up on
>>>> dc01, but only for dc02. I took VM snapshots before demoting dc02 so
>>>> could easily switch back.
>>>>
>>>> Does anyone have an idea how to resolve this issue ?
>>>>
>>>> Thank you very much for your kind help
>>>>
>>>> best regards
>>>>
>>>> Andreas
>>>>
>>> Hi all,
>>>
>>> by the way Samba version is: Version 4.2.0pre1-GIT-d7c22d5
>>>
>>> Thanks
>>>
>>> best regards
>>>
>>> Andreas
>>>
> Hello lp101,
>
> I have no traces of :
>
> bb22ce3e-2d94-47e2-aa29-11a2a0e4e2f3
> 60bb6abe-2d08-4f5f-81db-787f6e23706b
> 619df70c-abc9-4644-bff6-35809664bbd9
>
> in DNS. As dc03 is actually successfully joined and working, I cannot
> remove it via ADUC.
> Can you tell me where I can find those NTDS entries via ADSI ?
>
> Thanks
>
> best regards
>
> Andreas
>
--
-James
More information about the samba-technical
mailing list