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Petr MOTEJLEK

2014-Jul-21 19:14 UTC

[Samba] samba-tool domain demote - current DC is still the owner of 2 role(s)

Hey guys,

I had recently setup a new DC (called dc0) (in accordance with the wiki) and now
I would like to demote the old DC (called pdc0 :)). I followed the wiki again,
but I ran into the following issue. When trying to demote the old DC, I get this
error message:

pdc0 # samba-tool domain demote
ERROR: Current DC is still the owner of 2 role(s), use the role command to
transfer roles to another DC

It's not very verbose - I have no idea what the role(s) might be. I did run
the samba-tool fsmo transfer -role=all command on the new DC prior to trying to
demote command the old DC.

pdc0 # samba-tool fsmo show
InfrastructureMasterRole owner: CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz
RidAllocationMasterRole owner: CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz
PdcEmulationMasterRole owner: CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz
DomainNamingMasterRole owner: CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz
SchemaMasterRole owner: CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz

pdc0 # samba-tool drs showrepl
Default-First-Site-Name\PDC0
DSA Options: 0x00000001
DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
DSA invocationId: e5aad444-67dc-4b35-8fc2-42b5fd8cd140

==== INBOUND NEIGHBORS ===
DC=ForestDnsZones,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\DC0 via RPC
                DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
                Last attempt @ Mon Jul 21 21:05:20 2014 CEST was successful
                0 consecutive failure(s).
                Last success @ Mon Jul 21 21:05:20 2014 CEST

DC=DomainDnsZones,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\DC0 via RPC
                DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
                Last attempt @ Mon Jul 21 21:05:21 2014 CEST was successful
                0 consecutive failure(s).
                Last success @ Mon Jul 21 21:05:21 2014 CEST

DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\DC0 via RPC
                DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
                Last attempt @ Mon Jul 21 21:05:22 2014 CEST was successful
                0 consecutive failure(s).
                Last success @ Mon Jul 21 21:05:22 2014 CEST

CN=Schema,CN=Configuration,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\DC0 via RPC
                DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
                Last attempt @ Mon Jul 21 21:05:23 2014 CEST was successful
                0 consecutive failure(s).
                Last success @ Mon Jul 21 21:05:23 2014 CEST

CN=Configuration,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\DC0 via RPC
                DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
                Last attempt @ Mon Jul 21 21:05:24 2014 CEST was successful
                0 consecutive failure(s).
                Last success @ Mon Jul 21 21:05:24 2014 CEST

==== OUTBOUND NEIGHBORS ===
DC=ForestDnsZones,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\DC0 via RPC
                DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
                Last attempt @ NTTIME(0) was successful
                0 consecutive failure(s).
                Last success @ NTTIME(0)

DC=DomainDnsZones,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\DC0 via RPC
                DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
                Last attempt @ NTTIME(0) was successful
                0 consecutive failure(s).
                Last success @ NTTIME(0)

DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\DC0 via RPC
                DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
                Last attempt @ NTTIME(0) was successful
                0 consecutive failure(s).
                Last success @ NTTIME(0)

CN=Schema,CN=Configuration,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\DC0 via RPC
                DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
                Last attempt @ NTTIME(0) was successful
                0 consecutive failure(s).
                Last success @ NTTIME(0)

CN=Configuration,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\DC0 via RPC
                DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
                Last attempt @ NTTIME(0) was successful
                0 consecutive failure(s).
                Last success @ NTTIME(0)

==== KCC CONNECTION OBJECTS ===
Connection --
        Connection name: 10178e90-e3e4-4dcf-9165-5d363d8dd6ae
        Enabled        : TRUE
        Server DNS name : DC0.ad.m-k.cz
        Server DN name  : CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz
                TransportType: RPC
                options: 0x00000001
Warning: No NC replicated for Connection!

dc0 # samba-tool fsmo show
InfrastructureMasterRole owner: CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz
RidAllocationMasterRole owner: CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz
PdcEmulationMasterRole owner: CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz
DomainNamingMasterRole owner: CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz
SchemaMasterRole owner: CN=NTDS
Settings,CN=DC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz

dc0 # samba-tool drs showrepl
Default-First-Site-Name\DC0
DSA Options: 0x00000001
DSA object GUID: 9215ee10-7dce-4968-af6c-c015229a7be9
DSA invocationId: 4413329c-1e75-4d95-935a-2d9af6926255

==== INBOUND NEIGHBORS ===
CN=Schema,CN=Configuration,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\PDC0 via RPC
                DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
                Last attempt @ Mon Jul 21 21:06:54 2014 CEST was successful
                0 consecutive failure(s).
                Last success @ Mon Jul 21 21:06:54 2014 CEST

DC=ForestDnsZones,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\PDC0 via RPC
                DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
                Last attempt @ Mon Jul 21 21:06:53 2014 CEST was successful
                0 consecutive failure(s).
                Last success @ Mon Jul 21 21:06:53 2014 CEST

CN=Configuration,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\PDC0 via RPC
                DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
                Last attempt @ Mon Jul 21 21:06:55 2014 CEST was successful
                0 consecutive failure(s).
                Last success @ Mon Jul 21 21:06:55 2014 CEST

DC=DomainDnsZones,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\PDC0 via RPC
                DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
                Last attempt @ Mon Jul 21 21:06:54 2014 CEST was successful
                0 consecutive failure(s).
                Last success @ Mon Jul 21 21:06:54 2014 CEST

DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\PDC0 via RPC
                DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
                Last attempt @ Mon Jul 21 21:06:55 2014 CEST was successful
                0 consecutive failure(s).
                Last success @ Mon Jul 21 21:06:55 2014 CEST

==== OUTBOUND NEIGHBORS ===
CN=Schema,CN=Configuration,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\PDC0 via RPC
                DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
                Last attempt @ NTTIME(0) was successful
                0 consecutive failure(s).
                Last success @ NTTIME(0)

DC=ForestDnsZones,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\PDC0 via RPC
                DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
                Last attempt @ NTTIME(0) was successful
                0 consecutive failure(s).
                Last success @ NTTIME(0)

CN=Configuration,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\PDC0 via RPC
                DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
                Last attempt @ NTTIME(0) was successful
                0 consecutive failure(s).
                Last success @ NTTIME(0)

DC=DomainDnsZones,DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\PDC0 via RPC
                DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
                Last attempt @ NTTIME(0) was successful
                0 consecutive failure(s).
                Last success @ NTTIME(0)

DC=ad,DC=m-k,DC=cz
        Default-First-Site-Name\PDC0 via RPC
                DSA object GUID: 0bdca96b-bb1a-42ed-bd78-b4486e64f609
                Last attempt @ NTTIME(0) was successful
                0 consecutive failure(s).
                Last success @ NTTIME(0)

==== KCC CONNECTION OBJECTS ===
Connection --
        Connection name: bef32bac-a445-4672-bfb2-61b525842526
        Enabled        : TRUE
        Server DNS name : pdc0.ad.m-k.cz
        Server DN name  : CN=NTDS
Settings,CN=PDC0,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ad,DC=m-k,DC=cz
                TransportType: RPC
                options: 0x00000001
Warning: No NC replicated for Connection!

I am not an expert, but it seems like everything is working as it should, just
the old DC is probably holding on to some role(s) that samba-tool fsmo does not
care bout, but samba-tool domain demote does...

Just before sending this email, I realized that the DNS records could be of
importance too (since AD tends to store a lot information there). Here goes.
Additionally I am using BIND9 as backend.

pdc0 # dig @127.0.0.1 ad.m-k.cz AXFR
ad.m-k.cz.              3600    IN      SOA     pdc0.ad.m-k.cz.
hostmaster.ad.m-k.cz. 36 900 600 86400 0
ad.m-k.cz.              900     IN      NS      pdc0.ad.m-k.cz.
ad.m-k.cz.              900     IN      A       192.168.1.3
ad.m-k.cz.              900     IN      A       192.168.1.14
dc0.ad.m-k.cz.          900     IN      A       192.168.1.14
pdc0.ad.m-k.cz.         900     IN      A       192.168.1.3
apolo.ad.m-k.cz.        1200    IN      A       192.168.1.22
sirene.ad.m-k.cz.       900     IN      A       192.168.3.1
_msdcs.ad.m-k.cz.       900     IN      NS      pdc0.ad.m-k.cz.
_gc._tcp.ad.m-k.cz.     900     IN      SRV     0 100 3268 pdc0.ad.m-k.cz.
_gc._tcp.ad.m-k.cz.     900     IN      SRV     0 100 3268 dc0.ad.m-k.cz.
_ldap._tcp.ad.m-k.cz.   900     IN      SRV     0 100 389 pdc0.ad.m-k.cz.
_ldap._tcp.ad.m-k.cz.   900     IN      SRV     0 100 389 dc0.ad.m-k.cz.
_kpasswd._udp.ad.m-k.cz. 900    IN      SRV     0 100 464 pdc0.ad.m-k.cz.
_kpasswd._udp.ad.m-k.cz. 900    IN      SRV     0 100 464 dc0.ad.m-k.cz.
_kpasswd._tcp.ad.m-k.cz. 900    IN      SRV     0 100 464 pdc0.ad.m-k.cz.
_kpasswd._tcp.ad.m-k.cz. 900    IN      SRV     0 100 464 dc0.ad.m-k.cz.
_kerberos._udp.ad.m-k.cz. 900   IN      SRV     0 100 88 pdc0.ad.m-k.cz.
_kerberos._udp.ad.m-k.cz. 900   IN      SRV     0 100 88 dc0.ad.m-k.cz.
_kerberos._tcp.ad.m-k.cz. 900   IN      SRV     0 100 88 pdc0.ad.m-k.cz.
_kerberos._tcp.ad.m-k.cz. 900   IN      SRV     0 100 88 dc0.ad.m-k.cz.
ForestDnsZones.ad.m-k.cz. 900   IN      A       192.168.1.3
DomainDnsZones.ad.m-k.cz. 900   IN      A       192.168.1.3
_ldap._tcp.ForestDnsZones.ad.m-k.cz. 900 IN SRV 0 100 389 pdc0.ad.m-k.cz.
_ldap._tcp.DomainDnsZones.ad.m-k.cz. 900 IN SRV 0 100 389 pdc0.ad.m-k.cz.
_gc._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 3268
pdc0.ad.m-k.cz.
_gc._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 3268
dc0.ad.m-k.cz.
_ldap._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 389
pdc0.ad.m-k.cz.
_ldap._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 389
dc0.ad.m-k.cz.
_kerberos._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 88
pdc0.ad.m-k.cz.
_kerberos._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 88
dc0.ad.m-k.cz.
dc0\010CNF:61d132ad-c503-4c74-b7f7-5b77808f1a55.ad.m-k.cz. 900 IN A 192.168.1.14
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.ad.m-k.cz. 900 IN SRV 0
100 389 pdc0.ad.m-k.cz.
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.ad.m-k.cz. 900 IN SRV 0
100 389 pdc0.ad.m-k.cz.
ad.m-k.cz.              3600    IN      SOA     pdc0.ad.m-k.cz.
hostmaster.ad.m-k.cz. 36 900 600 86400 0

dc0 # dig @127.0.0.1 ad.m-k.cz AXFR
ad.m-k.cz.              3600    IN      SOA     dc0.ad.m-k.cz.
hostmaster.ad.m-k.cz. 36 900 600 86400 0
ad.m-k.cz.              900     IN      NS      pdc0.ad.m-k.cz.
ad.m-k.cz.              900     IN      A       192.168.1.3
ad.m-k.cz.              900     IN      A       192.168.1.14
dc0.ad.m-k.cz.          900     IN      A       192.168.1.14
pdc0.ad.m-k.cz.         900     IN      A       192.168.1.3
apolo.ad.m-k.cz.        1200    IN      A       192.168.1.22
sirene.ad.m-k.cz.       900     IN      A       192.168.3.1
_msdcs.ad.m-k.cz.       900     IN      NS      pdc0.ad.m-k.cz.
_gc._tcp.ad.m-k.cz.     900     IN      SRV     0 100 3268 pdc0.ad.m-k.cz.
_gc._tcp.ad.m-k.cz.     900     IN      SRV     0 100 3268 dc0.ad.m-k.cz.
_ldap._tcp.ad.m-k.cz.   900     IN      SRV     0 100 389 pdc0.ad.m-k.cz.
_ldap._tcp.ad.m-k.cz.   900     IN      SRV     0 100 389 dc0.ad.m-k.cz.
_kpasswd._udp.ad.m-k.cz. 900    IN      SRV     0 100 464 pdc0.ad.m-k.cz.
_kpasswd._udp.ad.m-k.cz. 900    IN      SRV     0 100 464 dc0.ad.m-k.cz.
_kpasswd._tcp.ad.m-k.cz. 900    IN      SRV     0 100 464 pdc0.ad.m-k.cz.
_kpasswd._tcp.ad.m-k.cz. 900    IN      SRV     0 100 464 dc0.ad.m-k.cz.
_kerberos._udp.ad.m-k.cz. 900   IN      SRV     0 100 88 pdc0.ad.m-k.cz.
_kerberos._udp.ad.m-k.cz. 900   IN      SRV     0 100 88 dc0.ad.m-k.cz.
_kerberos._tcp.ad.m-k.cz. 900   IN      SRV     0 100 88 pdc0.ad.m-k.cz.
_kerberos._tcp.ad.m-k.cz. 900   IN      SRV     0 100 88 dc0.ad.m-k.cz.
ForestDnsZones.ad.m-k.cz. 900   IN      A       192.168.1.3
DomainDnsZones.ad.m-k.cz. 900   IN      A       192.168.1.3
_ldap._tcp.ForestDnsZones.ad.m-k.cz. 900 IN SRV 0 100 389 pdc0.ad.m-k.cz.
_ldap._tcp.DomainDnsZones.ad.m-k.cz. 900 IN SRV 0 100 389 pdc0.ad.m-k.cz.
_gc._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 3268
pdc0.ad.m-k.cz.
_gc._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 3268
dc0.ad.m-k.cz.
_ldap._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 389
pdc0.ad.m-k.cz.
_ldap._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 389
dc0.ad.m-k.cz.
_kerberos._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 88
pdc0.ad.m-k.cz.
_kerberos._tcp.Default-First-Site-Name._sites.ad.m-k.cz. 900 IN SRV 0 100 88
dc0.ad.m-k.cz.
dc0\010CNF:61d132ad-c503-4c74-b7f7-5b77808f1a55.ad.m-k.cz. 900 IN A 192.168.1.14
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.ad.m-k.cz. 900 IN SRV 0
100 389 pdc0.ad.m-k.cz.
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.ad.m-k.cz. 900 IN SRV 0
100 389 pdc0.ad.m-k.cz.
ad.m-k.cz.              3600    IN      SOA     dc0.ad.m-k.cz.
hostmaster.ad.m-k.cz. 36 900 600 86400 0

Thanks a lot in advance for any pointers :)
Petr MOTEJLEK

Marc Muehlfeld

2014-Jul-22 04:48 UTC

head link

[Samba] samba-tool domain demote - current DC is still the owner of 2 role(s)

Hello Petr, hello Fernando,


Am 21.07.2014 21:14, schrieb Petr MOTEJLEK:> I had recently setup a new DC (called dc0) (in accordance with the wiki)
> and now I would like to demote the old DC (called pdc0 :)). I
> followed the wiki again, but I ran into the following issue.
> When trying to demote the old DC, I get this error message:
> 
> pdc0 # samba-tool domain demote
> ERROR: Current DC is still the owner of 2 role(s), use the role command
> to transfer roles to another DC

you both reported the same problem during the last days:

http://comments.gmane.org/gmane.network.samba.general/140496
http://www.spinics.net/lists/samba/msg117640.html



It seems we maybe hit a bug here. Let me try to demote a DC in my test
environment today and see what happens there. I'll report the result
tonight.


BTW: Petr: What Samba version do you use? And was it self compiled or a
package (SerNet, Distro, etc)?


Regards,
Marc

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