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Tino Müller

2018-Jul-02 06:53 UTC

[Samba] Different behaviour of winbind in 4.8.3

Hi list,

the behaviour of winbind changed in Samba version 4.8.3.

Having this nsswitch.conf:
# cat /etc/nsswitch.conf
passwd:                 compat winbind cache
group:                  compat winbind cache
shadow:                 compat

hosts:                  files dns
networks:               files

protocols:              db files
services:               db files
ethers:                 db files
rpc:                    db files

netgroup:               nis

and this smb.conf:
# cat /etc/samba/smb.conf
[global]
        kerberos method = secrets and keytab
        log file = /var/log/samba/log.%m
        max log size = 1000
        realm = SPREADSHIRT.PRIVATE
        security = ADS
        server role = member server
        server string = %h server (Samba, Ubuntu)
        winbind expand groups = 5
        winbind offline logon = Yes
        winbind separator = +
        workgroup = SPREADSHIRT
        idmap config * : range = 10000 - 19999
        idmap config spreadshirt : range = 1000000 - 19999999
        idmap config spreadshirt : backend = rid
        idmap config * : backend = tdb

There is a user in the domain SPREADSHIRT with the name tmutest.

With Samba 4.8.2 and lower:
# id tmutest
id: ‘tmutest’: no such user

# id SPREADSHIRT+tmutest
uid=1102339(SPREADSHIRT+tmutest) gid=1000513(SPREADSHIRT+domain users)
groups=1000513(SPREADSHIRT+domain
users),1102339(SPREADSHIRT+tmutest),10001(BUILTIN+users)


With Samba 4.8.3:
# id tmutest
uid=1102339(SPREADSHIRT+tmutest) gid=1000513(SPREADSHIRT+domain users)
groups=1000513(SPREADSHIRT+domain
users),1102339(SPREADSHIRT+tmutest),10001(BUILTIN+users)

root at toolbox01 [lej] ~ # id SPREADSHIRT+tmutest
uid=1102339(SPREADSHIRT+tmutest) gid=1000513(SPREADSHIRT+domain users)
groups=1000513(SPREADSHIRT+domain
users),1102339(SPREADSHIRT+tmutest),10001(BUILTIN+users)

Is this intended?
Is it possible to change the behaviour back to pre-4.8.3 by
configuration change?

Thank you.

Best,
Tino

Rowland Penny

2018-Jul-02 08:20 UTC

head link

[Samba] Different behaviour of winbind in 4.8.3

On Mon, 2 Jul 2018 08:53:31 +0200
Tino Müller via samba <samba at lists.samba.org> wrote:
> Hi list,
> 
> the behaviour of winbind changed in Samba version 4.8.3.
> 
> Having this nsswitch.conf:
> # cat /etc/nsswitch.conf
> passwd:                 compat winbind cache
> group:                  compat winbind cache
> shadow:                 compat
> 
> hosts:                  files dns
> networks:               files
> 
> protocols:              db files
> services:               db files
> ethers:                 db files
> rpc:                    db files
> 
> netgroup:               nis
> 
> and this smb.conf:
> # cat /etc/samba/smb.conf
> [global]
>         kerberos method = secrets and keytab
>         log file = /var/log/samba/log.%m
>         max log size = 1000
>         realm = SPREADSHIRT.PRIVATE
>         security = ADS
>         server role = member server
>         server string = %h server (Samba, Ubuntu)
>         winbind expand groups = 5
>         winbind offline logon = Yes
>         winbind separator = +
>         workgroup = SPREADSHIRT
>         idmap config * : range = 10000 - 19999
>         idmap config spreadshirt : range = 1000000 - 19999999
>         idmap config spreadshirt : backend = rid
>         idmap config * : backend = tdb
> 
> There is a user in the domain SPREADSHIRT with the name tmutest.
> 
> With Samba 4.8.2 and lower:
> # id tmutest
> id: ‘tmutest’: no such user
> 
> # id SPREADSHIRT+tmutest
> uid=1102339(SPREADSHIRT+tmutest) gid=1000513(SPREADSHIRT+domain users)
> groups=1000513(SPREADSHIRT+domain
> users),1102339(SPREADSHIRT+tmutest),10001(BUILTIN+users)
> 
> 
> With Samba 4.8.3:
> # id tmutest
> uid=1102339(SPREADSHIRT+tmutest) gid=1000513(SPREADSHIRT+domain users)
> groups=1000513(SPREADSHIRT+domain
> users),1102339(SPREADSHIRT+tmutest),10001(BUILTIN+users)
> 
> root at toolbox01 [lej] ~ # id SPREADSHIRT+tmutest
> uid=1102339(SPREADSHIRT+tmutest) gid=1000513(SPREADSHIRT+domain users)
> groups=1000513(SPREADSHIRT+domain
> users),1102339(SPREADSHIRT+tmutest),10001(BUILTIN+users)
> 
> Is this intended?
> Is it possible to change the behaviour back to pre-4.8.3 by
> configuration change?
> 
> Thank you.
> 
> Best,
> Tino
> 
You don't have 'winbind use default domain = yes' so you should have
to
use the domain name to get a result.

Can you try this with 'getent passwd tmutest', if this returns output
on 4.8.3, then it is a Samba problem, if it doesn't, it is an 'id'
problem.

The only thing that changed between 4.8.2 & 4.8.3 and seems to be
possibly relevant is this:

https://bugzilla.samba.org/show_bug.cgi?id=13369

Unless you can see something I missed here:

https://wiki.samba.org/index.php/Samba_4.8_Features_added/changed#Changes_since_4.8.2:

Rowland

Ralph Böhme

2018-Jul-02 08:57 UTC

head link

[Samba] Different behaviour of winbind in 4.8.3

On Mon, Jul 02, 2018 at 09:20:37AM +0100, Rowland Penny via samba
wrote:>The only thing that changed between 4.8.2 & 4.8.3 and seems to be
>possibly relevant is this:
>
>https://bugzilla.samba.org/show_bug.cgi?id=13369
yep. Andreas, can you take a look?

-slow

-- 
Ralph Boehme, Samba Team       https://samba.org/
Samba Developer, SerNet GmbH   https://sernet.de/en/samba/
GPG Key Fingerprint:           FAE2 C608 8A24 2520 51C5
                               59E4 AA1E 9B71 2639 9E46

Andreas Schneider

2018-Jul-02 09:55 UTC

head link

[Samba] Different behaviour of winbind in 4.8.3

On Monday, 2 July 2018 08:53:31 CEST Tino Müller via samba
wrote:> Hi list,
> 
> the behaviour of winbind changed in Samba version 4.8.3.
> 
> Having this nsswitch.conf:
> # cat /etc/nsswitch.conf
> passwd:                 compat winbind cache
> group:                  compat winbind cache
> shadow:                 compat
> 
> hosts:                  files dns
> networks:               files
> 
> protocols:              db files
> services:               db files
> ethers:                 db files
> rpc:                    db files
> 
> netgroup:               nis
> 
> and this smb.conf:
> # cat /etc/samba/smb.conf
> [global]
>         kerberos method = secrets and keytab
>         log file = /var/log/samba/log.%m
>         max log size = 1000
>         realm = SPREADSHIRT.PRIVATE
>         security = ADS
>         server role = member server
>         server string = %h server (Samba, Ubuntu)
>         winbind expand groups = 5
>         winbind offline logon = Yes
>         winbind separator = +
>         workgroup = SPREADSHIRT
>         idmap config * : range = 10000 - 19999
>         idmap config spreadshirt : range = 1000000 - 19999999
>         idmap config spreadshirt : backend = rid
>         idmap config * : backend = tdb
> 
> There is a user in the domain SPREADSHIRT with the name tmutest.
> 
> With Samba 4.8.2 and lower:
> # id tmutest
> id: ‘tmutest’: no such user
> 
> # id SPREADSHIRT+tmutest
> uid=1102339(SPREADSHIRT+tmutest) gid=1000513(SPREADSHIRT+domain users)
> groups=1000513(SPREADSHIRT+domain
> users),1102339(SPREADSHIRT+tmutest),10001(BUILTIN+users)
> 
> 
> With Samba 4.8.3:
> # id tmutest
> uid=1102339(SPREADSHIRT+tmutest) gid=1000513(SPREADSHIRT+domain users)
> groups=1000513(SPREADSHIRT+domain
> users),1102339(SPREADSHIRT+tmutest),10001(BUILTIN+users)
> 
> root at toolbox01 [lej] ~ # id SPREADSHIRT+tmutest
> uid=1102339(SPREADSHIRT+tmutest) gid=1000513(SPREADSHIRT+domain users)
> groups=1000513(SPREADSHIRT+domain
> users),1102339(SPREADSHIRT+tmutest),10001(BUILTIN+users)
> 
> Is this intended?
> Is it possible to change the behaviour back to pre-4.8.3 by
> configuration change?
> 
> Thank you.
Please open a bug report at https://bugzilla.samba.org and assign it to me.


Thanks,


	Andreas

-- 
Andreas Schneider                      asn at samba.org
Samba Team                             www.samba.org
GPG-ID:     8DFF53E18F2ABC8D8F3C92237EE0FC4DCC014E3D

Tino Müller

2018-Jul-05 07:33 UTC

head link

[Samba] Different behaviour of winbind in 4.8.3

Hi Rowland,

sorry for the late reply.

On 07/02/2018 10:20 AM, Rowland Penny via samba wrote:> You don't have 'winbind use default domain = yes' so you should
have to
> use the domain name to get a result.
FWIW, with 'winbind use default domain = yes' the output is:

# id tmutest
uid=1102339(tmutest) gid=1000513(domain users) groups=1000513(domain
users),1102339(tmutest),10001(BUILTIN+users)
> Can you try this with 'getent passwd tmutest', if this returns
output
> on 4.8.3, then it is a Samba problem, if it doesn't, it is an
'id'
> problem.
With 4.8.3 (4.8.2 does not produce a result):
# getent passwd tmutest
tmutest:*:1102339:1000513::/home/SPREADSHIRT/tmutest:/bin/false
> The only thing that changed between 4.8.2 & 4.8.3 and seems to be
> possibly relevant is this:
> 
> https://bugzilla.samba.org/show_bug.cgi?id=13369
> 
> Unless you can see something I missed here:
> 
>
https://wiki.samba.org/index.php/Samba_4.8_Features_added/changed#Changes_since_4.8.2:
Saw this too, but didn't know, if the changed behaviour was intended by
this change.

Will do a bug report as requested in the other mail.

Thank you.

Tino

Tino Müller

2018-Jul-05 07:34 UTC

head link

[Samba] Different behaviour of winbind in 4.8.3

On 07/02/2018 11:55 AM, Andreas Schneider via samba
wrote:> Please open a bug report at https://bugzilla.samba.org and assign it to me.
Will do. Thank you.

Tino

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