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Edson Tadeu Almeida da Silveira

2016-Oct-06 11:42 UTC

[Samba] winbindd losing track of RFC2307 UIDs

This is what there is in winbindd_idmap.tdb of both members that i have,
whewre file server 2 is working well and file server 1 lose winbind rfc
track.

#
# FILE SERVER 1 - PROBLEM
#
# tdbdump winbindd_idmap.tdb
{
key(9) = "USER HWM\00"
data(4) = "\D0\07\00\00"
}
{
key(10) = "GROUP HWM\00"
data(4) = "\D0\07\00\00"
}
{
key(14) = "IDMAP_VERSION\00"
data(4) = "\02\00\00\00"
}



#
# FILE SERVER 2 - OK
#
# tdbdump winbindd_idmap.tdb
{
key(9) = "GID 2002\00"
data(9) = "S-1-5-11\00"
}
{
key(9) = "S-1-5-11\00"
data(9) = "GID 2002\00"
}
{
key(9) = "USER HWM\00"
data(4) = "\D0\07\00\00"
}
{
key(9) = "GID 2000\00"
data(8) = "S-1-1-0\00"
}
{
key(8) = "S-1-1-0\00"
data(9) = "GID 2000\00"
}
{
key(8) = "S-1-5-2\00"
data(9) = "GID 2001\00"
}
{
key(10) = "GROUP HWM\00"
data(4) = "\D3\07\00\00"
}
{
key(9) = "GID 2001\00"
data(8) = "S-1-5-2\00"
}
{
key(14) = "IDMAP_VERSION\00"
data(4) = "\02\00\00\00"
}

2016-10-05 18:44 GMT-03:00 Achim Gottinger via samba <samba at
lists.samba.org>
:
>
>
> Am 05.10.2016 um 22:31 schrieb Achim Gottinger via samba:
>
>>
>>
>> Am 05.10.2016 um 22:12 schrieb Rob via samba:
>>
>>> On Tue, 4 Oct 2016, Rowland Penny wrote:
>>>
>>> This is very strange, have you tried running 'net cache
flush' on the
>>>> domain member ?
>>>>
>>>> Have you compared the users AD objects ?
>>>>
>>>
>>> Running 'net cache flush' on the member does fix things,
albeit only for
>>> a while:
>>>
>>> # wbinfo -i auser
>>> auser:*:2020:10000:User Name:/home/auser:/bin/bash
>>> # net cache flush
>>> # wbinfo -i auser
>>> auser:*:10028:10000:User Name:/home/auser:/bin/bash
>>> [...wait a few hours...]
>>> # wbinfo -i auser
>>> auser:*:2020:10000:User Name:/home/auser:/bin/bash
>>>
>>> Using ldbsearch on sam.ldb on the DC, I compared the attributes of
>>> problematic users and normal users... I couldn't find anything
obvious
>>> distinguishing them.
>>>
>>> Also, on the member:
>>>
>>> # net idmap dump
>>> dumping id mapping from
/usr/local/samba/var/locks/winbindd_idmap.tdb
>>> [...]
>>> UID 2020 S-1-5-21-2701825980-1665447529-2160704981-1177
>>>
>>> (where S-*-1177 is the SID for auser)
>>>
>>> But I'd think winbindd would prefer the mapping in AD, given
smb.conf
>>> having our domain listed explicitly and 2xxx only as a
default/fallback. Or
>>> maybe I misunderstand how the idmaps work... does the order in
smb.conf
>>> matter at all?
>>>
>>> _Rob
>>>
>>>
>>> Hi Rob,
>>
>> You can try to use tdbtool to delete the offending key with uid 2020.
>> https://www.samba.org/samba/docs/man/manpages-3/tdbtool.8.html
>> I'd stop samba make an backup of winbind_idmap.tdb and give it a
try.
>> In my case deleting the mappings from idamp.tdb fixed the issue of
>> changing uid's.
>>
>> achim~
>>
>>
>> Did the uid change from 2018 to 2020 or is this an different user or
> member server? If it changed editing winbindd_idmap.tdb might not fix your
> problem.
>
>
> --
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
>


-- 

-------------------------------------------
Edson Tadeu Almeida Silveira
http://sites.google.com/site/edsontadeu/
-------------------------------------------

Rowland Penny

2016-Oct-06 12:03 UTC

head link

[Samba] winbindd losing track of RFC2307 UIDs

On Thu, 6 Oct 2016 08:42:41 -0300
Edson Tadeu Almeida da Silveira via samba <samba at lists.samba.org>
wrote:
> This is what there is in winbindd_idmap.tdb of both members that i
> have, whewre file server 2 is working well and file server 1 lose
> winbind rfc track.
> 
> #
> # FILE SERVER 1 - PROBLEM
> #
> # tdbdump winbindd_idmap.tdb
> {
> key(9) = "USER HWM\00"
> data(4) = "\D0\07\00\00"
> }
> {
> key(10) = "GROUP HWM\00"
> data(4) = "\D0\07\00\00"
> }
> {
> key(14) = "IDMAP_VERSION\00"
> data(4) = "\02\00\00\00"
> }
> 
> 
> 
> #
> # FILE SERVER 2 - OK
> #
> # tdbdump winbindd_idmap.tdb
> {
> key(9) = "GID 2002\00"
> data(9) = "S-1-5-11\00"
> }
> {
> key(9) = "S-1-5-11\00"
> data(9) = "GID 2002\00"
> }
> {
> key(9) = "USER HWM\00"
> data(4) = "\D0\07\00\00"
> }
> {
> key(9) = "GID 2000\00"
> data(8) = "S-1-1-0\00"
> }
> {
> key(8) = "S-1-1-0\00"
> data(9) = "GID 2000\00"
> }
> {
> key(8) = "S-1-5-2\00"
> data(9) = "GID 2001\00"
> }
> {
> key(10) = "GROUP HWM\00"
> data(4) = "\D3\07\00\00"
> }
> {
> key(9) = "GID 2001\00"
> data(8) = "S-1-5-2\00"
> }
> {
> key(14) = "IDMAP_VERSION\00"
> data(4) = "\02\00\00\00"
> }
> 
There doesn't seem to be anything wrong there, can you post the
smb.conf from the domain member.

Rowland

Edson Tadeu Almeida da Silveira

2016-Oct-06 12:09 UTC

head link

[Samba] winbindd losing track of RFC2307 UIDs

Same smb.conf in both members, only change netbios name.


[global]
 netbios name = FS1
 realm = DOMAIN.LOCAL
 workgroup = DOMAIN
 security = ads
 idmap config * : backend = tdb
 idmap config * : range = 2000-9999
 idmap config DOMAIN : backend = rid
 idmap config DOMAIN : range = 10000-99999
#+
 username map = /var/lib/samba/user.map
#+
  winbind enum users = yes
        winbind enum groups = yes
        winbind use default domain = yes
        winbind expand groups = 4
        winbind refresh tickets = Yes
        winbind normalize names = Yes
#+
        dedicated keytab file = /etc/krb5.keytab
        kerberos method = secrets and keytab
#+
        domain master = no
        local master = no
        preferred master = no
#+
        vfs objects = acl_xattr
        map acl inherit = Yes
        store dos attributes = Yes
#+
        log level = 2 vfs:7 auth:2 passdb:2
#+
vfs objects = full_audit
        full_audit:facility = LOCAL7
        full_audit:priority = NOTICE
        full_audit:prefix = %u|%I|%m|%S
        full_audit:success = pread pwrite rename rmdir mkdir unlink chown
        full_audit:failure = none
#+
         veto files
/*.lnk/*.bkf/*.pif/*.avi/*.vob/*.qic/*.pak/*.srt/*.vmx/autorun.inf/RECYCLER/*.cmd/*.{*}/
#+

[public]
        path = /dados/public
        read only = No


2016-10-06 9:03 GMT-03:00 Rowland Penny <rpenny at samba.org>:
> On Thu, 6 Oct 2016 08:42:41 -0300
> Edson Tadeu Almeida da Silveira via samba <samba at lists.samba.org>
wrote:
>
> > This is what there is in winbindd_idmap.tdb of both members that i
> > have, whewre file server 2 is working well and file server 1 lose
> > winbind rfc track.
> >
> > #
> > # FILE SERVER 1 - PROBLEM
> > #
> > # tdbdump winbindd_idmap.tdb
> > {
> > key(9) = "USER HWM\00"
> > data(4) = "\D0\07\00\00"
> > }
> > {
> > key(10) = "GROUP HWM\00"
> > data(4) = "\D0\07\00\00"
> > }
> > {
> > key(14) = "IDMAP_VERSION\00"
> > data(4) = "\02\00\00\00"
> > }
> >
> >
> >
> > #
> > # FILE SERVER 2 - OK
> > #
> > # tdbdump winbindd_idmap.tdb
> > {
> > key(9) = "GID 2002\00"
> > data(9) = "S-1-5-11\00"
> > }
> > {
> > key(9) = "S-1-5-11\00"
> > data(9) = "GID 2002\00"
> > }
> > {
> > key(9) = "USER HWM\00"
> > data(4) = "\D0\07\00\00"
> > }
> > {
> > key(9) = "GID 2000\00"
> > data(8) = "S-1-1-0\00"
> > }
> > {
> > key(8) = "S-1-1-0\00"
> > data(9) = "GID 2000\00"
> > }
> > {
> > key(8) = "S-1-5-2\00"
> > data(9) = "GID 2001\00"
> > }
> > {
> > key(10) = "GROUP HWM\00"
> > data(4) = "\D3\07\00\00"
> > }
> > {
> > key(9) = "GID 2001\00"
> > data(8) = "S-1-5-2\00"
> > }
> > {
> > key(14) = "IDMAP_VERSION\00"
> > data(4) = "\02\00\00\00"
> > }
> >
>
> There doesn't seem to be anything wrong there, can you post the
> smb.conf from the domain member.
>
> Rowland
>


-- 

-------------------------------------------
Edson Tadeu Almeida Silveira
http://sites.google.com/site/edsontadeu/
-------------------------------------------

Edson Tadeu Almeida da Silveira

2016-Oct-06 12:36 UTC

head link

[Samba] winbindd losing track of RFC2307 UIDs

Besides this change on vfs objects, i delete winbindd_idmap.tdb and
restarted winbind.


Change smb.conf:

vfs objects = acl_xattr full_audit
        full_audit:facility = LOCAL7
        full_audit:priority = NOTICE
        full_audit:prefix = %u|%I|%m|%S
        full_audit:success = pread pwrite rename rmdir mkdir unlink chown
        full_audit:failure = none



Here are my configurations:

# /etc/resolv.conf
nameserver 10.40.11.7      (AD1)
nameserver 10.40.11.9      (AD2)
search domain.local

# /etc/hosts
127.0.0.1 localhost
10.40.11.12 fs1.domain.local fs1

# /etc/krb5.conf
[libdefaults]
 default_realm = DOMAIN.LOCAL
 dns_lookup_realm = false
 dns_lookup_kdc = true

# cat /etc/hostname
fs1



2016-10-06 9:24 GMT-03:00 Rowland Penny <rpenny at samba.org>:
> On Thu, 6 Oct 2016 09:09:57 -0300
> Edson Tadeu Almeida da Silveira <edson.tadeu at gmail.com> wrote:
>
> > Same smb.conf in both members, only change netbios name.
> >
> >
> > [global]
> >  netbios name = FS1
> >  realm = DOMAIN.LOCAL
> >  workgroup = DOMAIN
> >  security = ads
> >  idmap config * : backend = tdb
> >  idmap config * : range = 2000-9999
> >  idmap config DOMAIN : backend = rid
> >  idmap config DOMAIN : range = 10000-99999
> > #+
> >  username map = /var/lib/samba/user.map
> > #+
> >   winbind enum users = yes
> >         winbind enum groups = yes
> >         winbind use default domain = yes
> >         winbind expand groups = 4
> >         winbind refresh tickets = Yes
> >         winbind normalize names = Yes
> > #+
> >         dedicated keytab file = /etc/krb5.keytab
> >         kerberos method = secrets and keytab
> > #+
> >         domain master = no
> >         local master = no
> >         preferred master = no
> > #+
> >         vfs objects = acl_xattr
> >         map acl inherit = Yes
> >         store dos attributes = Yes
> > #+
> >         log level = 2 vfs:7 auth:2 passdb:2
> > #+
> > vfs objects = full_audit
> >         full_audit:facility = LOCAL7
> >         full_audit:priority = NOTICE
> >         full_audit:prefix = %u|%I|%m|%S
> >         full_audit:success = pread pwrite rename rmdir mkdir unlink
> > chown full_audit:failure = none
> > #+
> >          veto files > >
/*.lnk/*.bkf/*.pif/*.avi/*.vob/*.qic/*.pak/*.srt/*.vmx/
> autorun.inf/RECYCLER/*.cmd/*.{*}/
> > #+
> >
> > [public]
> >         path = /dados/public
> >         read only = No
> >
>
> OK, there is only one problem there, you have 'vfs objects >
acl_xattr', followed by 'vfs objects = full_audit'. The second turns
> off the first, you should have 'vfs objects = acl_xattr full_audit'
>
> fix this and then if it doesn't fix your problem,
> post /etc/resolv.conf, /etc/hosts, /etc/krb5.conf, /etc/hostname
>
> Rowland
>


-- 

-------------------------------------------
Edson Tadeu Almeida Silveira
http://sites.google.com/site/edsontadeu/
-------------------------------------------

Edson Tadeu Almeida da Silveira

2016-Oct-07 10:18 UTC

head link

[Samba] winbindd losing track of RFC2307 UIDs

Rowland, now two members are working great.

Past 24 hours and they didn´t lost uid/gid.

root at fs1:/var/lib/samba# wbinfo -i edsontadeu
edsontadeu:*:11106:10513::/home/DOMAIN/edsontadeu:/bin/false

root at fs2:/var/lib/samba# wbinfo -i edsontadeu
edsontadeu:*:11106:10513::/home/DOMAIN/edsontadeu:/bin/false


Thanks!



2016-10-06 9:24 GMT-03:00 Rowland Penny <rpenny at samba.org>:
> On Thu, 6 Oct 2016 09:09:57 -0300
> Edson Tadeu Almeida da Silveira <edson.tadeu at gmail.com> wrote:
>
> > Same smb.conf in both members, only change netbios name.
> >
> >
> > [global]
> >  netbios name = FS1
> >  realm = DOMAIN.LOCAL
> >  workgroup = DOMAIN
> >  security = ads
> >  idmap config * : backend = tdb
> >  idmap config * : range = 2000-9999
> >  idmap config DOMAIN : backend = rid
> >  idmap config DOMAIN : range = 10000-99999
> > #+
> >  username map = /var/lib/samba/user.map
> > #+
> >   winbind enum users = yes
> >         winbind enum groups = yes
> >         winbind use default domain = yes
> >         winbind expand groups = 4
> >         winbind refresh tickets = Yes
> >         winbind normalize names = Yes
> > #+
> >         dedicated keytab file = /etc/krb5.keytab
> >         kerberos method = secrets and keytab
> > #+
> >         domain master = no
> >         local master = no
> >         preferred master = no
> > #+
> >         vfs objects = acl_xattr
> >         map acl inherit = Yes
> >         store dos attributes = Yes
> > #+
> >         log level = 2 vfs:7 auth:2 passdb:2
> > #+
> > vfs objects = full_audit
> >         full_audit:facility = LOCAL7
> >         full_audit:priority = NOTICE
> >         full_audit:prefix = %u|%I|%m|%S
> >         full_audit:success = pread pwrite rename rmdir mkdir unlink
> > chown full_audit:failure = none
> > #+
> >          veto files > >
/*.lnk/*.bkf/*.pif/*.avi/*.vob/*.qic/*.pak/*.srt/*.vmx/
> autorun.inf/RECYCLER/*.cmd/*.{*}/
> > #+
> >
> > [public]
> >         path = /dados/public
> >         read only = No
> >
>
> OK, there is only one problem there, you have 'vfs objects >
acl_xattr', followed by 'vfs objects = full_audit'. The second turns
> off the first, you should have 'vfs objects = acl_xattr full_audit'
>
> fix this and then if it doesn't fix your problem,
> post /etc/resolv.conf, /etc/hosts, /etc/krb5.conf, /etc/hostname
>
> Rowland
>


-- 

-------------------------------------------
Edson Tadeu Almeida Silveira
http://sites.google.com/site/edsontadeu/
-------------------------------------------

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