[Samba] Two DC but Different UID

[Rowland penny]

On 14/06/16 17:00, Carlos A. P. Cunha wrote:
> Correcting previous email
>
>
> Hello!
> Own two Dcs Samba 4.4, this all OK, but ids are different:
>
>
> Example DC1:
> id tr005
> uid = 3000039 (TESTELOCAL \ tr005) gid = 100 (users) groups = 100 
> (users), 3000039 (TESTELOCAL \ tr005), 3,000,009 (BUILTIN \ users)
>
> Example DC2:
> id tr005
> uid = 3000023 (TESTELOCAL \ tr005) gid = 100 (users) groups = 100 
> (users), 3000023 (TESTELOCAL \ tr005), 3,000,001 (BUILTIN \ users)
>
> My smb.conf is the same in both:
> # Global parameters
> [global]
> workgroup = TESTELOCAL
> realm = TESTELOCAL.INTERNO
> netbios name = SAMBADC-01
> server role = active directory domain controller
> server services = s3fs, rpc, NBT, wrepl, ldap, CLDAP, kdc, drepl, 
> winbindd, ntp_signd, kcc, dnsupdate
> idmap_ldb: use RFC2307 = yes
>
>
> [Netlogon]
> path = /opt/samba/var/locks/sysvol/testelocal.interno/scripts
> read only = No
>
> [Sysvol]
> path = / opt / samba / var / locks / sysvol
> read only = No
>
>
> The doubt is this and problem?
> If yes, how to fix?
>
> Thank you
>
>
> Em 14-06-2016 12:59, Carlos A. P. Cunha escreveu:
>>
>> Hello!
>> Own two Dcs Samba 4.4, this all OK, but ids are different:
>>
>>
>> Example DC2:
>> id tr005
>> uid = 3000039 (TESTELOCAL \ tr005) gid = 100 (users) groups = 100 
>> (users), 3000039 (TESTELOCAL \ tr005), 3,000,009 (BUILTIN \ users)
>>
>> Example DC2:
>> id tr005
>> uid = 3000023 (TESTELOCAL \ tr005) gid = 100 (users) groups = 100 
>> (users), 3000023 (TESTELOCAL \ tr005), 3,000,001 (BUILTIN \ users)
>>
>> My smb.conf is the same in both:
>> # Global parameters
>> [global]
>> workgroup = TESTELOCAL
>> realm = TESTELOCAL.INTERNO
>> netbios name = SAMBADC-01
>> server role = active directory domain controller
>> server services = s3fs, rpc, NBT, wrepl, ldap, CLDAP, kdc, drepl, 
>> winbindd, ntp_signd, kcc, dnsupdate
>> idmap_ldb: use RFC2307 = yes
>>
>>
>> [Netlogon]
>> path = /opt/samba/var/locks/sysvol/testelocal.interno/scripts
>> read only = No
>>
>> [Sysvol]
>> path = / opt / samba / var / locks / sysvol
>> read only = No
>>
>>
>> The doubt is this and problem?
>> If yes, how to fix?
>>
>> Thank you
>>
>

Each DC can and probably will have different UIDs for users, this is 
because the DCs use idmap.ldb and this uses 'xidNumber' attributes which 
seem to be allocated on a first come basis. One way to get the same UID 
numbers on all DCs, is to copy idmap.ldap from the first DC to all 
others and then keep them in sync, the other is to use RFC2307 attributes.

Rowland