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Krzysztof Paszkowski

2018-Apr-02 17:47 UTC

[Samba] Unable to rejoin domain, LDAP error 50

Hi all,

After demoting one of AD DCs, I’m unable to join the domain again.
Demoting was fine.

OS is Centos 6
Samba 4.7.6 (with 4.7.4 doesn’t work either) built from sources.


klist
Ticket cache: FILE:/tmp/krb5cc_0
Default principal: administrator at DOMAIN.NET.PL

Valid starting     Expires            Service principal
04/02/18 18:44:33  04/03/18 04:44:33  krbtgt/DOMAIN.NET.PL at DOMAIN.NET.PL
        renew until 04/03/18 18:44:27
[root at konc-serwer samba-4.7.4]#
[root at konc-serwer samba-4.7.4]#  samba-tool domain join domain.net.pl DC
-U"domain\administrator" --dns-backend=SAMBA_INTERNAL
Finding a writeable DC for domain 'domain.net.pl'
Found DC dc.domain.net.pl
Password for [domain\administrator]:
workgroup is domain
realm is domain.net.pl
Adding CN=KONC-SERWER,OU=Domain Controllers,DC=domain,DC=net,DC=pl
Join failed - cleaning up
ERROR(ldb): uncaught exception - LDAP error 50 LDAP_INSUFFICIENT_ACCESS_RIGHTS -
<Failed to add CN=KONC-SERWER,OU=Domain Controllers,DC=domain,DC=net,DC=pl:
Updating the UF_TRUSTED_FOR_DELEGATION bit in userAccountControl is not
permitted without the SeEnableDelegationPrivilege> <>
  File
"/usr/local/samba/lib64/python2.6/site-packages/samba/netcmd/__init__.py",
line 176, in _run
    return self.run(*args, **kwargs)
  File
"/usr/local/samba/lib64/python2.6/site-packages/samba/netcmd/domain.py",
line 661, in run
    machinepass=machinepass, use_ntvfs=use_ntvfs, dns_backend=dns_backend)
  File "/usr/local/samba/lib64/python2.6/site-packages/samba/join.py",
line 1474, in join_DC
    ctx.do_join()
  File "/usr/local/samba/lib64/python2.6/site-packages/samba/join.py",
line 1375, in do_join
    ctx.join_add_objects()
  File "/usr/local/samba/lib64/python2.6/site-packages/samba/join.py",
line 611, in join_add_objects
    ctx.samdb.add(rec)

Firstly I had error:
ERROR(<class 'samba.join.DCJoinException'>): uncaught exception -
Can't join, error: Not removing account KONC-SERWER$ which looks like a
Samba DC account maching the password we already have.  To override, remove
secrets.ldb and secrets.tdb

I have moved that files, cleared private folder. I’ve run make install again -
still the same.

What can I do to rejoin the domain again?


Regards,
Kris

Rowland Penny

2018-Apr-02 18:26 UTC

head link

[Samba] Unable to rejoin domain, LDAP error 50

On Mon, 2 Apr 2018 19:47:11 +0200
Krzysztof Paszkowski via samba <samba at lists.samba.org> wrote:
> Hi all,
> 
> After demoting one of AD DCs, I’m unable to join the domain again.
> Demoting was fine.
> 
> OS is Centos 6
> Samba 4.7.6 (with 4.7.4 doesn’t work either) built from sources.
> 
> 
> klist
> Ticket cache: FILE:/tmp/krb5cc_0
> Default principal: administrator at DOMAIN.NET.PL
> 
> Valid starting     Expires            Service principal
> 04/02/18 18:44:33  04/03/18 04:44:33
> krbtgt/DOMAIN.NET.PL at DOMAIN.NET.PL renew until 04/03/18 18:44:27
> [root at konc-serwer samba-4.7.4]#
> [root at konc-serwer samba-4.7.4]#  samba-tool domain join domain.net.pl
> DC -U"domain\administrator" --dns-backend=SAMBA_INTERNAL 
Try running the command like this:

samba-tool domain join domain.net.pl DC -U Administrator
--password=<Administrators password>

If that doesn't work, try adding '--verbose' to the command and see
if
anything pops out.

At first sight, it looks like 'Administrator' doesn't have the right
permissions to join a DC to the domain, so you might want to check just
what rights the Administrator has.

Rowland

Krzysztof Paszkowski

2018-Apr-02 18:36 UTC

head link

[Samba] Unable to rejoin domain, LDAP error 50

Hi,
Thanks for the answer.
Unfortunally verbose option didn't get anything new.

[root at konc-serwer samba-4.7.6]# samba-tool domain join domain.net.pl DC
--verbose -U Administrator --password='mypasswordwashere'
Finding a writeable DC for domain 'domain.net.pl'
Found DC dc.domain.net.pl
workgroup is DOMAIN
realm is domain.net.pl
Adding CN=KONC-SERWER,OU=Domain Controllers,DC=domain,DC=net,DC=pl
Join failed - cleaning up
ERROR(ldb): uncaught exception - LDAP error 50 LDAP_INSUFFICIENT_ACCESS_RIGHTS -
<Failed to add CN=KONC-SERWER,OU=Domain Controllers,DC=domain,DC=net,DC=pl:
Updating the UF_TRUSTED_FOR_DELEGATION bit in userAccountControl is not
permitted without the SeEnableDelegationPrivilege> <>
  File
"/usr/local/samba/lib64/python2.6/site-packages/samba/netcmd/__init__.py",
line 176, in _run
    return self.run(*args, **kwargs)
  File
"/usr/local/samba/lib64/python2.6/site-packages/samba/netcmd/domain.py",
line 661, in run
    machinepass=machinepass, use_ntvfs=use_ntvfs, dns_backend=dns_backend)
  File "/usr/local/samba/lib64/python2.6/site-packages/samba/join.py",
line 1474, in join_DC
    ctx.do_join()
  File "/usr/local/samba/lib64/python2.6/site-packages/samba/join.py",
line 1375, in do_join
    ctx.join_add_objects()
  File "/usr/local/samba/lib64/python2.6/site-packages/samba/join.py",
line 611, in join_add_objects
    ctx.samdb.add(rec)

Administrator should have all rights.
I was trying different account (member of Domain Admins), also with no luck.

What else can I do?

Regards,
Kris

-----Original Message-----
From: Rowland Penny [mailto:rpenny at samba.org] 
Sent: Monday, April 2, 2018 8:27 PM
To: samba at lists.samba.org
Cc: Krzysztof Paszkowski
Subject: Re: [Samba] Unable to rejoin domain, LDAP error 50

On Mon, 2 Apr 2018 19:47:11 +0200
Krzysztof Paszkowski via samba <samba at lists.samba.org> wrote:
> Hi all,
> 
> After demoting one of AD DCs, I’m unable to join the domain again.
> Demoting was fine.
> 
> OS is Centos 6
> Samba 4.7.6 (with 4.7.4 doesn’t work either) built from sources.
> 
> 
> klist
> Ticket cache: FILE:/tmp/krb5cc_0
> Default principal: administrator at DOMAIN.NET.PL
> 
> Valid starting     Expires            Service principal
> 04/02/18 18:44:33  04/03/18 04:44:33
> krbtgt/DOMAIN.NET.PL at DOMAIN.NET.PL renew until 04/03/18 18:44:27 
> [root at konc-serwer samba-4.7.4]# [root at konc-serwer samba-4.7.4]#  
> samba-tool domain join domain.net.pl DC -U"domain\administrator" 
> --dns-backend=SAMBA_INTERNAL
Try running the command like this:

samba-tool domain join domain.net.pl DC -U Administrator
--password=<Administrators password>

If that doesn't work, try adding '--verbose' to the command and see
if anything pops out.

At first sight, it looks like 'Administrator' doesn't have the right
permissions to join a DC to the domain, so you might want to check just what
rights the Administrator has.

Rowland

lingpanda101

2018-Apr-02 19:09 UTC

head link

[Samba] Unable to rejoin domain, LDAP error 50

On 4/2/2018 1:47 PM, Krzysztof Paszkowski via samba
wrote:> Hi all,
>
> After demoting one of AD DCs, I’m unable to join the domain again.
> Demoting was fine.
>
> OS is Centos 6
> Samba 4.7.6 (with 4.7.4 doesn’t work either) built from sources.
>
>
> klist
> Ticket cache: FILE:/tmp/krb5cc_0
> Default principal: administrator at DOMAIN.NET.PL
>
> Valid starting     Expires            Service principal
> 04/02/18 18:44:33  04/03/18 04:44:33  krbtgt/DOMAIN.NET.PL at DOMAIN.NET.PL
>          renew until 04/03/18 18:44:27
> [root at konc-serwer samba-4.7.4]#
> [root at konc-serwer samba-4.7.4]#  samba-tool domain join domain.net.pl DC
-U"domain\administrator" --dns-backend=SAMBA_INTERNAL
> Finding a writeable DC for domain 'domain.net.pl'
> Found DC dc.domain.net.pl
> Password for [domain\administrator]:
> workgroup is domain
> realm is domain.net.pl
> Adding CN=KONC-SERWER,OU=Domain Controllers,DC=domain,DC=net,DC=pl
> Join failed - cleaning up
> ERROR(ldb): uncaught exception - LDAP error 50
LDAP_INSUFFICIENT_ACCESS_RIGHTS -  <Failed to add CN=KONC-SERWER,OU=Domain
Controllers,DC=domain,DC=net,DC=pl: Updating the UF_TRUSTED_FOR_DELEGATION bit
in userAccountControl is not permitted without the
SeEnableDelegationPrivilege> <>
>    File
"/usr/local/samba/lib64/python2.6/site-packages/samba/netcmd/__init__.py",
line 176, in _run
>      return self.run(*args, **kwargs)
>    File
"/usr/local/samba/lib64/python2.6/site-packages/samba/netcmd/domain.py",
line 661, in run
>      machinepass=machinepass, use_ntvfs=use_ntvfs, dns_backend=dns_backend)
>    File
"/usr/local/samba/lib64/python2.6/site-packages/samba/join.py", line
1474, in join_DC
>      ctx.do_join()
>    File
"/usr/local/samba/lib64/python2.6/site-packages/samba/join.py", line
1375, in do_join
>      ctx.join_add_objects()
>    File
"/usr/local/samba/lib64/python2.6/site-packages/samba/join.py", line
611, in join_add_objects
>      ctx.samdb.add(rec)
>
> Firstly I had error:
> ERROR(<class 'samba.join.DCJoinException'>): uncaught
exception - Can't join, error: Not removing account KONC-SERWER$ which looks
like a Samba DC account maching the password we already have.  To override,
remove secrets.ldb and secrets.tdb
>
> I have moved that files, cleared private folder. I’ve run make install
again - still the same.
>
> What can I do to rejoin the domain again?
>
>
> Regards,
> Kris
When you demoted the DC did you perform a meta cleanup? Are you reusing 
the same hostname?

-- 
--
James

Krzysztof Paszkowski

2018-Apr-02 19:56 UTC

head link

[Samba] Unable to rejoin domain, LDAP error 50

I'm trying to use the same hostname.
The meta cleanup - I can't see the demoted controller in ADUC nor in Active
Directory Sites and Services.
Shall I try via ntdsutil?

Regards,
Kris

-----Original Message-----
From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of lingpanda101
via samba
Sent: Monday, April 2, 2018 9:09 PM
To: samba at lists.samba.org
Subject: Re: [Samba] Unable to rejoin domain, LDAP error 50

On 4/2/2018 1:47 PM, Krzysztof Paszkowski via samba
wrote:> Hi all,
>
> After demoting one of AD DCs, I’m unable to join the domain again.
> Demoting was fine.
>
> OS is Centos 6
> Samba 4.7.6 (with 4.7.4 doesn’t work either) built from sources.
>
>
> klist
> Ticket cache: FILE:/tmp/krb5cc_0
> Default principal: administrator at DOMAIN.NET.PL
>
> Valid starting     Expires            Service principal
> 04/02/18 18:44:33  04/03/18 04:44:33  krbtgt/DOMAIN.NET.PL at DOMAIN.NET.PL
>          renew until 04/03/18 18:44:27 [root at konc-serwer samba-4.7.4]# 
> [root at konc-serwer samba-4.7.4]#  samba-tool domain join domain.net.pl 
> DC -U"domain\administrator" --dns-backend=SAMBA_INTERNAL Finding
a writeable DC for domain 'domain.net.pl'
> Found DC dc.domain.net.pl
> Password for [domain\administrator]:
> workgroup is domain
> realm is domain.net.pl
> Adding CN=KONC-SERWER,OU=Domain Controllers,DC=domain,DC=net,DC=pl
> Join failed - cleaning up
> ERROR(ldb): uncaught exception - LDAP error 50
LDAP_INSUFFICIENT_ACCESS_RIGHTS -  <Failed to add CN=KONC-SERWER,OU=Domain
Controllers,DC=domain,DC=net,DC=pl: Updating the UF_TRUSTED_FOR_DELEGATION bit
in userAccountControl is not permitted without the
SeEnableDelegationPrivilege> <>
>    File
"/usr/local/samba/lib64/python2.6/site-packages/samba/netcmd/__init__.py",
line 176, in _run
>      return self.run(*args, **kwargs)
>    File
"/usr/local/samba/lib64/python2.6/site-packages/samba/netcmd/domain.py",
line 661, in run
>      machinepass=machinepass, use_ntvfs=use_ntvfs, dns_backend=dns_backend)
>    File
"/usr/local/samba/lib64/python2.6/site-packages/samba/join.py", line
1474, in join_DC
>      ctx.do_join()
>    File
"/usr/local/samba/lib64/python2.6/site-packages/samba/join.py", line
1375, in do_join
>      ctx.join_add_objects()
>    File
"/usr/local/samba/lib64/python2.6/site-packages/samba/join.py", line
611, in join_add_objects
>      ctx.samdb.add(rec)
>
> Firstly I had error:
> ERROR(<class 'samba.join.DCJoinException'>): uncaught
exception -
> Can't join, error: Not removing account KONC-SERWER$ which looks like 
> a Samba DC account maching the password we already have.  To override, 
> remove secrets.ldb and secrets.tdb
>
> I have moved that files, cleared private folder. I’ve run make install
again - still the same.
>
> What can I do to rejoin the domain again?
>
>
> Regards,
> Kris
When you demoted the DC did you perform a meta cleanup? Are you reusing the same
hostname?

--
--
James


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