[Samba] Trouble demoting DC with broken replication
Andreas Oster
aoster at novanetwork.de
Thu May 8 07:03:09 MDT 2014
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
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