[Samba] Samba AD - Issue with winbindd: Could not write result

Rafael Domiciano r.domiciano at senff.com.br
Wed Sep 9 15:57:16 UTC 2015 

It's still keep happening. Now I found some more logs, following. 

[2015/09/09 11:53:05.745466, 2] ../source3/winbindd/winbindd.c:845(winbind_client_response_written) 
Could not write response[16816:GETPWUID] to client: Pipe quebrado 
[2015/09/09 11:53:07.517217, 2] ../source3/winbindd/winbindd.c:845(winbind_client_response_written) 
Could not write response[17005:GETPWUID] to client: Pipe quebrado 
[2015/09/09 11:53:26.885318, 2] ../source3/winbindd/winbindd.c:845(winbind_client_response_written) 
Could not write response[23855:GETPWNAM] to client: Pipe quebrado 
[2015/09/09 11:53:28.859946, 2] ../source3/winbindd/winbindd.c:845(winbind_client_response_written) 
Could not write response[23530:GETPWNAM] to client: Pipe quebrado 
[2015/09/09 11:53:40.676647, 2] ../source3/winbindd/winbindd.c:845(winbind_client_response_written) 
Could not write response[1354:GETPWNAM] to client: Pipe quebrado 
[2015/09/09 11:53:41.340656, 2] ../source3/winbindd/winbindd.c:845(winbind_client_response_written) 
Could not write response[23901:GETPWNAM] to client: Pipe quebrado 

[...] 

[2015/09/09 11:55:09.471205, 2] ../source3/winbindd/winbindd.c:845(winbind_client_response_written) 
Could not write response[24131:GETPWNAM] to client: Pipe quebrado 
[2015/09/09 11:55:11.320456, 2] ../source3/winbindd/winbindd.c:845(winbind_client_response_written) 
Could not write response[23999:GETPWNAM] to client: Pipe quebrado 
[2015/09/09 11:55:13.024012, 2] ../source3/winbindd/winbindd.c:845(winbind_client_response_written) 
Could not write response[1354:GETPWNAM] to client: Pipe quebrado 
[2015/09/09 11:55:17.598809, 2] ../source3/winbindd/winbindd.c:1007(remove_client) 
final write to client failed: Pipe quebrado 
[2015/09/09 11:55:17.598908, 2] ../source3/winbindd/winbindd.c:1007(remove_client) 
final write to client failed: Pipe quebrado 
[2015/09/09 11:55:17.598945, 2] ../source3/winbindd/winbindd.c:1007(remove_client) 
final write to client failed: Pipe quebrado 

[2015/09/09 11:54:28.888393, 2] ../source3/winbindd/winbindd_rpc.c:320(rpc_name_to_sid) 
name_to_sid: failed to lookup name: NT_STATUS_NONE_MAPPED 
[2015/09/09 11:55:17.920302, 0] ../source3/winbindd/winbindd_dual.c:105(child_write_response) 
Could not write result 
[2015/09/09 11:55:44.273903, 2] ../source3/winbindd/winbindd_rpc.c:320(rpc_name_to_sid) 
name_to_sid: failed to lookup name: NT_STATUS_NONE_MAPPED 
[2015/09/09 11:55:52.735902, 0] ../source3/winbindd/winbindd_dual.c:105(child_write_response) 
Could not write result 
[2015/09/09 11:56:03.060477, 0] ../source3/winbindd/winbindd_dual.c:105(child_write_response) 
Could not write result 

And then with a simple command like: id [user] or wbinfo -u, I get no answer. Today was worse, even the root user cant login via putty, luckily i was with a session with root opened. 

In named log there's this entries, could be part of the bigger picture? Of course I know named denied access to update, which is OK to me, I don't want dynamic update of A entries. 

09-Sep-2015 12:45:18.525 update-security: error: client 172.16.100.33#59658: update 'senffnet.intranet/IN' denied 
09-Sep-2015 12:48:29.661 update-security: error: client 172.16.2.86#61674: update 'senffnet.intranet/IN' denied 
09-Sep-2015 12:53:21.164 update-security: error: client 172.16.2.142#60166: update 'senffnet.intranet/IN' denied 



----- Mensagem original -----

De: "Rafael Domiciano" <r.domiciano at senff.com.br> 
Para: "L.P.H. van Belle" <belle at bazuin.nl> 
Cc: samba at lists.samba.org 
Enviadas: Quarta-feira, 2 de Setembro de 2015 10:43:09 
Assunto: Re: [Samba] Samba AD - Issue with winbindd: Could not write result 


Yes, sure, the permissions are 755 to these folders: 

[root at wdc logs]# ls -ld /opt 
drwxr-xr-x. 4 administrator root 4096 Ago 10 14:51 /opt 

[root at wdc logs]# ls -ld /opt/samba/ 
drwxr-xr-x 13 administrator root 4096 Ago 11 09:58 /opt/samba/ 

[root at wdc logs]# ls -ld /opt/samba/private/ 
drwxr-xr-x 7 administrator root 4096 Set 2 10:40 /opt/samba/private/ 

Rafael 

----- Mensagem original -----

De: "L.P.H. van Belle" <belle at bazuin.nl> 
Para: samba at lists.samba.org 
Enviadas: Quarta-feira, 2 de Setembro de 2015 10:20:16 
Assunto: Re: [Samba] Samba AD - Issue with winbindd: Could not write result 

Can you check the full path.. 

755 755 755 
/opt/samba/private/ 

Its possible that the private folder had 700 

Greetz, 

Louis 



> -----Oorspronkelijk bericht----- 
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens Rafael Domiciano 
> Verzonden: woensdag 2 september 2015 15:09 
> Aan: Rowland Penny 
> CC: samba at lists.samba.org 
> Onderwerp: Re: [Samba] Samba AD - Issue with winbindd: Could not write 
> result 
> 
> Yes, named user as read privileges on folder "dns" and in "dns.keytab" 
> file. 
> 
> [root at wdc private]# ll 
> total 12824 
> drwxrwx--- 3 root named 4096 Ago 5 15:53 dns 
> -rw-r----- 1 root named 807 Ago 5 15:53 dns.keytab 
> 
> 
> 
> ----- Mensagem original ----- 
> 
> De: "Rowland Penny" <rowlandpenny241155 at gmail.com> 
> Para: samba at lists.samba.org 
> Enviadas: Quarta-feira, 2 de Setembro de 2015 10:05:26 
> Assunto: Re: [Samba] Samba AD - Issue with winbindd: Could not write 
> result 
> 
> On 02/09/15 13:59, Rafael Domiciano wrote: 
> > Thanks Rowland for response. 
> > 
> > OK, setup the "log level = 10". 
> > 
> > I noticed something today. I have to restart the samba server 2 times. 
> > In the second restart I did a named restart too. Maybe could be 
> > something related to communication to named? 
> > 
> > I did the named.conf conforming the wiki, adding these 2 lines: 
> > 
> > options {.... # DNS dynamic updates via kerberos tkey-gssapi-keytab 
> > "/opt/samba/private/dns.keytab"; }; 
> > 
> > include "/opt/samba/private/named.conf"; 
> > 
> > 
> 
> Can the 'named' user read the keytab ? 
> 
> Rowland 
> 
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