[Samba] Samba 4.5.3 AD DC - issues with sysvol when setting up Group Policies

Richard p1 at originsystems.co.za
Sun Jan 15 18:30:25 UTC 2017


I remain baffled as to why richard.h cannot access the sysvol share. 

Permissions all seem ok from what I can see and I'm not sure why this should be any different from normal AD share behaviour (our other shares are working fine for domain users)

I would really appreciate it if someone could let me know whether the sysvol has become corrupt in some way and  I am wasting my time even trying to sort this out.

thanks

-----Original Message-----
From: Richard [mailto:p1 at originsystems.co.za] 
Sent: 12 January 2017 23:34
To: 'samba at lists.samba.org' <samba at lists.samba.org>
Subject: RE: [Samba] Samba 4.5.3 AD DC - issues with sysvol when setting up Group Policies

I'm not sure if of value but here also is the richard.h group information as reported by Windows on the client:

C:\WINDOWS\system32>whoami /groups

GROUP INFORMATION
-----------------

Group Name                                Type             SID                                          Attributes
========================================= ================ ============================================ ===============================================================
CT\osDirector                             Group            S-1-5-21-962076006-582617201-2751578557-1107 Mandatory group, Enabled by default, Enabled group
Everyone                                  Well-known group S-1-1-0                                      Mandatory group, Enabled by default, Enabled group
BUILTIN\Administrators                    Alias            S-1-5-32-544                                 Mandatory group, Enabled by default, Enabled group, Group owner
BUILTIN\Performance Log Users             Alias            S-1-5-32-559                                 Mandatory group, Enabled by default, Enabled group
BUILTIN\Users                             Alias            S-1-5-32-545                                 Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\INTERACTIVE                  Well-known group S-1-5-4                                      Mandatory group, Enabled by default, Enabled group
CONSOLE LOGON                             Well-known group S-1-2-1                                      Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\Authenticated Users          Well-known group S-1-5-11                                     Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\This Organization            Well-known group S-1-5-15                                     Mandatory group, Enabled by default, Enabled group
LOCAL                                     Well-known group S-1-2-0                                      Mandatory group, Enabled by default, Enabled group
CT\Domain Admins                          Group            S-1-5-21-962076006-582617201-2751578557-512  Mandatory group, Enabled by default, Enabled group
CT\Denied RODC Password Replication Group Alias            S-1-5-21-962076006-582617201-2751578557-572  Mandatory group, Enabled by default, Enabled group
CT\osDevelopment                          Group            S-1-5-21-962076006-582617201-2751578557-1110 Mandatory group, Enabled by default, Enabled group
CT\osSecurity                             Group            S-1-5-21-962076006-582617201-2751578557-1111 Mandatory group, Enabled by default, Enabled group
CT\osVPN                                  Group            S-1-5-21-962076006-582617201-2751578557-1112 Mandatory group, Enabled by default, Enabled group
Mandatory Label\High Mandatory Level      Label            S-1-16-12288

-----Original Message-----
From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of Richard via samba
Sent: 12 January 2017 23:21
To: samba at lists.samba.org
Subject: Re: [Samba] Samba 4.5.3 AD DC - issues with sysvol when setting up Group Policies

cool!

root at dc1:~ # wbinfo -r richard.h
10001
3000008
10000
10014
10004
10005
3000005
3000009
3000000

-----Original Message-----
From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of lingpanda101 via samba
Sent: 12 January 2017 22:57
To: samba at lists.samba.org
Subject: Re: [Samba] Samba 4.5.3 AD DC - issues with sysvol when setting up Group Policies

On 1/12/2017 3:47 PM, Richard via samba wrote:
> Hi
>
> root at dc1:~ # samba-tool dbcheck --cross-ncs --reset-well-known-acls 
> --fix --yes ...some error information...
> Checked 3647 objects (2 errors)
> root at dc1:~ # samba-tool dbcheck --cross-ncs --reset-well-known-acls 
> --fix Checking 3647 objects Checked 3647 objects (0 errors)
>
> root at dc1:~ # getfacl /usr/local/samba/var/locks/sysvol/
> getfacl: Removing leading '/' from absolute path names # file: 
> usr/local/samba/var/locks/sysvol/ # owner: root # group: 3000000 
> user::rwx user:root:rwx user:3000000:rwx user:3000001:r-x 
> user:3000002:rwx user:3000003:r-x group::rwx group:3000000:rwx 
> group:3000001:r-x group:3000002:rwx group:3000003:r-x mask::rwx
> other::---
> default:user::rwx
> default:user:root:rwx
> default:user:3000000:rwx
> default:user:3000001:r-x
> default:user:3000002:rwx
> default:user:3000003:r-x
> default:group::---
> default:group:3000000:rwx
> default:group:3000001:r-x
> default:group:3000002:rwx
> default:group:3000003:r-x
> default:mask::rwx
> default:other::---
>
>
>   gpupdate /force still fails :o(
>
> -----Original Message-----
> From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of
> lingpanda101 via samba
> Sent: 12 January 2017 22:34
> To: samba at lists.samba.org
> Subject: Re: [Samba] Samba 4.5.3 AD DC - issues with sysvol when 
> setting up Group Policies
>
> On 1/12/2017 3:25 PM, Richard via samba wrote:
>> Hi
>>
>> here are the commands in the order I ran them:
>>
>> root at dc1:~ # systemctl stop samba
>> root at dc1:~ # net cache flush
>> root at dc1:~ # samba-tool ntacl sysvolreset root at dc1:~ # net cache 
>> flush root at dc1:~ # samba-tool ntacl sysvolcheck root at dc1:~ # 
>> systemctl start samba root at dc1:~ # smbclient //localhost/sysvol 
>> -UAdministrator -c 'ls'
>> Enter Administrator's password:
>> Domain=[CT] OS=[Windows 6.1] Server=[Samba 4.5.3]
>>     .                                   D        0  Thu Jan 12 22:14:18 2017
>>     ..                                  D        0  Thu Jan 12 22:14:45 2017
>>     ct.mydomain.com              D        0  Thu Feb 18 00:16:24 2016
>>
>> 		244669724 blocks of size 1024. 235669260 blocks available 
>> root at dc1:~ # smbclient //localhost/sysvol -Urichard.h -c 'ls'
>> Enter richard.h's password:
>> Domain=[CT] OS=[Windows 6.1] Server=[Samba 4.5.3] 
>> NT_STATUS_ACCESS_DENIED listing \* root at dc1:~ #
>>
>> then on the client:
>>
>> C:\WINDOWS\system32>gpupdate /force
>> Updating policy...
>>
>> Computer policy could not be updated successfully. The following errors were encountered:
>>
>> The processing of Group Policy failed. Windows attempted to read the file \\ct.mydomain.com\SysVol\ct.mydomain.com\Policies\{073A6C41-BE24-4CA2-8F00-386A9F2D3908}\gpt.ini from a domain controller and was not successful. Group Policy settings may not be applied until this event is resolved. This issue may be transient and could be caused by one or more of the following:
>> a) Name Resolution/Network Connectivity to the current domain controller.
>> b) File Replication Service Latency (a file created on another domain controller has not replicated to the current domain controller).
>> c) The Distributed File System (DFS) client has been disabled.
>> User Policy could not be updated successfully. The following errors were encountered:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> -----Original Message-----
>> From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of
>> lingpanda101 via samba
>> Sent: 12 January 2017 21:54
>> To: samba at lists.samba.org
>> Subject: Re: [Samba] Samba 4.5.3 AD DC - issues with sysvol when 
>> setting up Group Policies
>>
>> On 1/12/2017 2:47 PM, Richard via samba wrote:
>>> Hi Rowland,
>>>
>>> I've done the below and retried to log on as a normal user, but sadly:
>>>
>>> C:\> gpupdate /force     still returns
>>>
>>> The processing of Group Policy failed. Windows attempted to read the file \\ct.mydomain.com\sysvol\ct.mydomain.com\Policies\{31B2F340-016D-11D2-945F-00C04FB984F9}\gpt.ini from a domain controller and was not successful. Group Policy settings may not be applied until this event is resolved. This issue may be transient and could be caused by one or more of the following:
>>> a) Name Resolution/Network Connectivity to the current domain controller.
>>> b) File Replication Service Latency (a file created on another domain controller has not replicated to the current domain controller).
>>> c) The Distributed File System (DFS) client has been disabled.
>>>
>>> Also a normal domain user still can't get a listing on sysvol
>>>
>>> smbclient //localhost/sysvol -Urichard.h -c 'ls'
>>> Enter richard.h's password:
>>> Domain=[CT] OS=[Windows 6.1] Server=[Samba 4.5.3] 
>>> NT_STATUS_ACCESS_DENIED listing \*
>>>
>>> but Administrator can fine:
>>>
>>> smbclient //localhost/sysvol -UAdministrator -c 'ls'
>>> Enter Administrator's password:
>>> Domain=[CT] OS=[Windows 6.1] Server=[Samba 4.5.3]
>>>      .                                   D        0  Thu Jan 12 20:58:10 2017
>>>      ..                                  D        0  Thu Jan 12 21:21:00 2017
>>>      ct.mydomain.com    D        0  Thu Feb 18 00:16:24 2016
>>>
>>> 		244669724 blocks of size 1024. 235669456 blocks available
>>>
>>>
>>> Also, I've rerun getfacl and I see that GID 10013 still exists for both group and other, even though I have removed it from "domain admins"
>>>
>>> group::rwx
>>> group:10013:rwx
>>> group:10014:r-x
>>> group:3000002:rwx
>>> group:3000003:r-x
>>> group:3000006:rwx
>>> group:3000010:r-x
>>> mask::rwx
>>> other::---
>>> default:user::rwx
>>> default:user:root:rwx
>>> default:user:3000002:rwx
>>> default:user:3000003:r-x
>>> default:user:3000006:rwx
>>> default:user:3000010:r-x
>>> default:group::---
>>> default:group:10013:rwx
>>> default:group:10014:r-x
>>> default:group:3000002:rwx
>>> default:group:3000003:r-x
>>> default:group:3000006:rwx
>>> default:group:3000010:r-x
>>> default:mask::rwx
>>> default:other::---
>>>
>>> so not really sure where to go from here
>>>
>>> (btw - I won't keep saying thank you but just to let you know that I 
>>> really really appreciate all the help you guys are giving on this)
>>>
>>> Richard
>>>
>>> PS - I just thought may be worthwhile pasting my smb.conf file here 
>>> (domain name and forwarder ips changed)
>>>
>>>     [global]
>>> 	workgroup = CT
>>> 	realm = ct.mydomain.com
>>> 	netbios name = DC1
>>> 	server role = active directory domain controller
>>>
>>>                  allow dns updates = nonsecure and secure
>>>            
>>> 	dns forwarder = 1.2.3.4 10.20.30.40
>>> 	idmap_ldb:use rfc2307 = yes
>>>            
>>>                  ldap server require strong auth = no
>>>
>>> [netlogon]
>>> 	path = /usr/local/samba/var/locks/sysvol/ct.mydomain.com/scripts
>>> 	read only = No
>>>
>>> [sysvol]
>>> 	path = /usr/local/samba/var/locks/sysvol
>>> 	read only = No
>>>
>>>
>>> -----Original Message-----
>>> From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of 
>>> Rowland Penny via samba
>>> Sent: 12 January 2017 21:10
>>> To: samba at lists.samba.org
>>> Subject: Re: [Samba] Samba 4.5.3 AD DC - issues with sysvol when 
>>> setting up Group Policies
>>>
>>> On Thu, 12 Jan 2017 20:46:15 +0200
>>> Richard via samba <samba at lists.samba.org> wrote:
>>>
>>>> Hi James
>>>>
>>>> The output is as follows...
>>>>
>>>> wbinfo --gid-info=10013    =>  CT\domain admins:x:10013:
>>>>
>>>> wbinfo --uid-info=3000008 => CT\domain 
>>>> admins:*:3000008:3000008::/home/CT/domain admins:/bin/false
>>> If you remove the gidNumber from Domain Admins, you will find that it gets the same GID as its UID '3000008'
>>>
>>>> Yes I have set "domain admins" to have NIS domain "CT" and GID "10013"
>>>> - I can remove this no problem
>>> See above and I would suggest removing the gidNumber, then run 'net cache flush'
>>>
>>>> Yes I have set "domain users" to have NIS domain "CT" and GID "10014"
>>>> - I can remove this no problem
>>> No that is OK
>>>
>>>> No I haven't set a UID or GID for Administrator
>>> Good, you just Administrator into a normal Unix user if you do.
>>>
>>>> I do indeed have 'idmap_ldb:use rfc2307 = Yes' - should I remove 
>>>> this from smb.conf?
>>> No, you need it
>>>
>>> Rowland
>>>
>>> --
>>> To unsubscribe from this list go to the following URL and read the
>>> instructions:  https://lists.samba.org/mailman/options/samba
>>>
>>>
>> Did you run 'net cache flush'?
>>
>> --
>> - James
>>
>>
>> --
>> To unsubscribe from this list go to the following URL and read the
>> instructions:  https://lists.samba.org/mailman/options/samba
>>
>>
> What is the output of the below now?
>
> getfacl /usr/local/samba/var/locks/sysvol/
>
> You may also need to run
>
> samba-tool dbcheck --cross-ncs --reset-well-known-acls --fix
>
>
> --
> - James
>
>

Progress

What is the output of

'wbinfo -r richard.h'


--
- James


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