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Guilherme Boing

2015-Oct-13 13:19 UTC

[Samba] Second DC doesn't recognize users/groups on getent

Hello,

I just realized that my second DC does not recognize the users from the AD.
wbinfo -u/-g are working just fine.

[root at dc1 ~]# id bruno.castro
uid=10004(POL\bruno.castro) gid=100(users)
grupos=100(users),10001(POL\ti),3000009(BUILTIN\users)

[root at dc2 ~]# id bruno.castro
id: bruno.castro: no such user

[root at dc1 ~]# wbinfo -i bruno.castro
POL\bruno.castro:*:10004:100:Bruno de
Castro:/home/POL/bruno.castro:/bin/bash

[root at dc2 ~]# wbinfo -i bruno.castro
POL\bruno.castro:*:10004:100:Bruno de
Castro:/home/POL/bruno.castro:/bin/bash

nsswitch.conf is fine, both dcs are like this:
passwd:     files sss winbind
shadow:     files sss winbind
group:      files sss winbind


smb.conf is the same on both DCs (except for the netbios name, where DC1 is
DC1 and DC2 is DC2)
# Global parameters
[global]
        workgroup = POL
        realm = POLE.ONLINE
        netbios name = DC1
        server role = active directory domain controller
        dns forwarder = 192.168.22.180
        log level = 3
        template shell = /bin/bash
        idmap_ldb:use rfc2307 = yes
        allow dns updates = nonsecure

[netlogon]
        path = /usr/local/samba/var/locks/sysvol/pole.online/scripts
        read only = No

[sysvol]
        path = /usr/local/samba/var/locks/sysvol
        read only = No

drs showrepl also does not prompt any error on both sides.

What am I missing ?
Not sure if it matters, but DC1 has 4 winbindd proccess running while DC2
has only 3.
Also noticed from log.winbindd on DC1 that whenever I do 'id
brunocastro',
the system is properly asking winbindd for the user, while on DC2 it does
not happen.

Both DCs are running CentOS 7 and Samba 4.3.0.

Rowland Penny

2015-Oct-13 13:45 UTC

head link

[Samba] Second DC doesn't recognize users/groups on getent

On 13/10/15 14:19, Guilherme Boing wrote:> Hello,
>
> I just realized that my second DC does not recognize the users from the AD.
> wbinfo -u/-g are working just fine.
>
> [root at dc1 ~]# id bruno.castro
> uid=10004(POL\bruno.castro) gid=100(users)
> grupos=100(users),10001(POL\ti),3000009(BUILTIN\users)
>
> [root at dc2 ~]# id bruno.castro
> id: bruno.castro: no such user
>
> [root at dc1 ~]# wbinfo -i bruno.castro
> POL\bruno.castro:*:10004:100:Bruno de
> Castro:/home/POL/bruno.castro:/bin/bash
>
> [root at dc2 ~]# wbinfo -i bruno.castro
> POL\bruno.castro:*:10004:100:Bruno de
> Castro:/home/POL/bruno.castro:/bin/bash
>
> nsswitch.conf is fine, both dcs are like this:
> passwd:     files sss winbind
> shadow:     files sss winbind
> group:      files sss winbind
>
>
> smb.conf is the same on both DCs (except for the netbios name, where DC1 is
> DC1 and DC2 is DC2)
> # Global parameters
> [global]
>          workgroup = POL
>          realm = POLE.ONLINE
>          netbios name = DC1
>          server role = active directory domain controller
>          dns forwarder = 192.168.22.180
>          log level = 3
>          template shell = /bin/bash
>          idmap_ldb:use rfc2307 = yes
>          allow dns updates = nonsecure
>
> [netlogon]
>          path = /usr/local/samba/var/locks/sysvol/pole.online/scripts
>          read only = No
>
> [sysvol]
>          path = /usr/local/samba/var/locks/sysvol
>          read only = No
>
> drs showrepl also does not prompt any error on both sides.
>
> What am I missing ?
> Not sure if it matters, but DC1 has 4 winbindd proccess running while DC2
> has only 3.
> Also noticed from log.winbindd on DC1 that whenever I do 'id
brunocastro',
> the system is properly asking winbindd for the user, while on DC2 it does
> not happen.
>
> Both DCs are running CentOS 7 and Samba 4.3.0.
Hi, does running this:

ldbsearch -H /var/lib/samba/private/sam.ldb -b "dc=pole,dc=online" -s 
sub "(&(objectClass=user)(sAMAccountName=bruno.castro))"

on both DCs, produce the same output?
It should,

Also, unless you are using sssd for sudo or autofs etc you do not need 
it in /etc/nsswitch.conf if you are also using winbind. As it is setup, 
sssd will respond before winbind, so this may not be a winbind problem, 
it could be an sssd problem.

Rowland

Guilherme Boing

2015-Oct-13 14:00 UTC

head link

[Samba] Second DC doesn't recognize users/groups on getent

Hello Rowland,

I should also mention that Samba 4.3.0 was installed from tarball, I
compiled it myself.

DC2 does not have the /var/lib/samba/private/sam.ldb file. Also it did not
return any result on DC1.
However, using /usr/local/samba/private/sam.ldb, both DCs returned the same
thing:

# returned 4 records
# 1 entries
# 3 referrals

I wonder why DC1 has the /var/lib/samba/private/sam.ldb file and DC2 does
not.

Regarding the sssd issue, I am not really using sssd. sssd is not even
running, I believe when I first installed Samba through yum, it installed
itself there. Still, I have removed sss from nsswitch on both DCs.


On Tue, Oct 13, 2015 at 10:45 AM, Rowland Penny <
rowlandpenny241155 at gmail.com> wrote:
> On 13/10/15 14:19, Guilherme Boing wrote:
>
>> Hello,
>>
>> I just realized that my second DC does not recognize the users from the
>> AD.
>> wbinfo -u/-g are working just fine.
>>
>> [root at dc1 ~]# id bruno.castro
>> uid=10004(POL\bruno.castro) gid=100(users)
>> grupos=100(users),10001(POL\ti),3000009(BUILTIN\users)
>>
>> [root at dc2 ~]# id bruno.castro
>> id: bruno.castro: no such user
>>
>> [root at dc1 ~]# wbinfo -i bruno.castro
>> POL\bruno.castro:*:10004:100:Bruno de
>> Castro:/home/POL/bruno.castro:/bin/bash
>>
>> [root at dc2 ~]# wbinfo -i bruno.castro
>> POL\bruno.castro:*:10004:100:Bruno de
>> Castro:/home/POL/bruno.castro:/bin/bash
>>
>> nsswitch.conf is fine, both dcs are like this:
>> passwd:     files sss winbind
>> shadow:     files sss winbind
>> group:      files sss winbind
>>
>>
>> smb.conf is the same on both DCs (except for the netbios name, where
DC1
>> is
>> DC1 and DC2 is DC2)
>> # Global parameters
>> [global]
>>          workgroup = POL
>>          realm = POLE.ONLINE
>>          netbios name = DC1
>>          server role = active directory domain controller
>>          dns forwarder = 192.168.22.180
>>          log level = 3
>>          template shell = /bin/bash
>>          idmap_ldb:use rfc2307 = yes
>>          allow dns updates = nonsecure
>>
>> [netlogon]
>>          path = /usr/local/samba/var/locks/sysvol/pole.online/scripts
>>          read only = No
>>
>> [sysvol]
>>          path = /usr/local/samba/var/locks/sysvol
>>          read only = No
>>
>> drs showrepl also does not prompt any error on both sides.
>>
>> What am I missing ?
>> Not sure if it matters, but DC1 has 4 winbindd proccess running while
DC2
>> has only 3.
>> Also noticed from log.winbindd on DC1 that whenever I do 'id
brunocastro',
>> the system is properly asking winbindd for the user, while on DC2 it
does
>> not happen.
>>
>> Both DCs are running CentOS 7 and Samba 4.3.0.
>>
>
> Hi, does running this:
>
> ldbsearch -H /var/lib/samba/private/sam.ldb -b
"dc=pole,dc=online" -s sub
> "(&(objectClass=user)(sAMAccountName=bruno.castro))"
>
> on both DCs, produce the same output?
> It should,
>
> Also, unless you are using sssd for sudo or autofs etc you do not need it
> in /etc/nsswitch.conf if you are also using winbind. As it is setup, sssd
> will respond before winbind, so this may not be a winbind problem, it could
> be an sssd problem.
>
> Rowland
>
>
>
>
> --
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