[Samba] Strange DNS issue...

Daniel Müller mueller at tropenklinik.de
Wed Sep 17 23:50:06 MDT 2014


Just do it with the samba-tool. I think this should be the right way. For me
some features of the snap-in where not working at all.
So relay on samba-tool.

Greetings
Daniel


EDV Daniel Müller

Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen 
Tel.: 07071/206-463, Fax: 07071/206-499
eMail: mueller at tropenklinik.de
Internet: www.tropenklinik.de




-----Ursprüngliche Nachricht-----
Von: samba-bounces at lists.samba.org [mailto:samba-bounces at lists.samba.org] Im
Auftrag von Ryan Ashley
Gesendet: Mittwoch, 17. September 2014 17:08
An: samba at lists.samba.org
Betreff: Re: [Samba] Strange DNS issue...

I created the zones in the Microsoft DNS snap-in. Could this be the issue?

On 09/16/2014 02:39 AM, Daniel Müller wrote:
> "if I
>> take a freshly installed Windows 7 box and join it to Samba 4 
>> domains, I get no reverse-DNS."
> Did you ,at first create the reverse zone, ex.: samba-tool dns 
> zonecreate yoursambadc  your.reverse.zone.in-addr.arpa, samba-tool dns 
> zonecreate s4master 135.168.192.in-addr.arpa.
> If you do this in the first run, and of course your dns is working, 
> all your clients that join the domain will be registered in the reverse
zone also.
>
> Greetings
> Daniel
>
>
> EDV Daniel Müller
>
> Leitung EDV
> Tropenklinik Paul-Lechler-Krankenhaus
> Paul-Lechler-Str. 24
> 72076 Tübingen
> Tel.: 07071/206-463, Fax: 07071/206-499
> eMail: mueller at tropenklinik.de
> Internet: www.tropenklinik.de
>
>
>
> -----Ursprüngliche Nachricht-----
> Von: samba-bounces at lists.samba.org 
> [mailto:samba-bounces at lists.samba.org] Im Auftrag von Ryan Ashley
> Gesendet: Montag, 15. September 2014 23:16
> An: samba at lists.samba.org
> Betreff: Re: [Samba] Strange DNS issue...
>
> I just wanted to update everybody here. We are building a small domain 
> (Server 2008 R2 server and Windows 7 client) inside VirtualBox to test
this.
> If it works with the same settings, I will assume it is a bug.
> Either way I will post my results here.
>
> On 09/12/2014 11:02 AM, Ryan Ashley wrote:
>> Sorry for the delayed response. We were off yesterday.
>>
>> Rowland, this same setup works with reverse-zones on a 2008 R2 domain.
>> I mean, on a 2008 R2 domain hosted by 2008 R2. We have nothing 
>> special on the Samba 4 domain I am aware of. The client 
>> configurations on both domains are set to DHCP for all workstations. 
>> In other words, if I take a freshly installed Windows 7 box and join 
>> it to Samba 4 domains, I get no reverse-DNS. If I join the same box 
>> to the Windows-hosted domain, I do. Not saying this is not a Windows 
>> issue as it may well be but I was making note of that test, which I 
>> did attempt prior to posting here.
>>
>> Here is a dump from syslog with dhcpd filtered.
>>
>> Actually, that has a lot of MAC addresses in it. Suffice to say I see 
>> DHCPREQUEST, DHCPACK, DHCPINFORM, DHCPACK, DHCPINFORM, and DHCPACK 
>> again for loads of MACs/addresses. No errors. If you still want to 
>> see it, may I send it to you off-list to protect the MACs?
>>
>> Here is the dump from my dhcpd.leases file.
>>
>> lease 172.16.2.12 {
>>    starts 5 2014/09/12 14:44:22;
>>    ends 5 2014/09/12 14:54:22;
>>    cltt 5 2014/09/12 14:44:22;
>>    binding state active;
>>    next binding state free;
>>    rewind binding state free;
>>    hardware ethernet ;
>>    uid "\001\340i\225\303\260\332";
>>    client-hostname "youthpastor01";
>> }
>> lease 172.16.2.9 {
>>    starts 5 2014/09/12 14:47:26;
>>    ends 5 2014/09/12 14:57:26;
>>    cltt 5 2014/09/12 14:47:26;
>>    binding state active;
>>    next binding state free;
>>    rewind binding state free;
>>    hardware ethernet ;
>>    uid "\0018`w\033:\200";
>>    client-hostname "jcenter";
>> }
>> lease 172.16.2.13 {
>>    starts 5 2014/09/12 14:47:54;
>>    ends 5 2014/09/12 14:57:54;
>>    cltt 5 2014/09/12 14:47:54;
>>    binding state active;
>>    next binding state free;
>>    rewind binding state free;
>>    hardware ethernet ;
>>    uid "\0018`w\265w<";
>>    client-hostname "av01";
>> }
>> lease 172.16.2.47 {
>>    starts 5 2014/09/12 14:48:53;
>>    ends 5 2014/09/12 14:58:53;
>>    cltt 5 2014/09/12 14:48:53;
>>    binding state active;
>>    next binding state free;
>>    rewind binding state free;
>>    hardware ethernet ;
>>    uid "\001\004}{\027\362\237";
>>    client-hostname "budget";
>> }
>> lease 172.16.2.11 {
>>    starts 5 2014/09/12 14:48:54;
>>    ends 5 2014/09/12 14:58:54;
>>    cltt 5 2014/09/12 14:48:54;
>>    binding state active;
>>    next binding state free;
>>    rewind binding state free;
>>    hardware ethernet ;
>>    uid "\0018`w\033\206\367";
>>    client-hostname "admin01";
>> }
>> lease 172.16.2.12 {
>>    starts 5 2014/09/12 14:49:22;
>>    ends 5 2014/09/12 14:59:22;
>>    cltt 5 2014/09/12 14:49:22;
>>    binding state active;
>>    next binding state free;
>>    rewind binding state free;
>>    hardware ethernet ;
>>    uid "\001\340i\225\303\260\332";
>>    client-hostname "youthpastor01";
>> }
>> lease 172.16.2.9 {
>>    starts 5 2014/09/12 14:52:26;
>>    ends 5 2014/09/12 15:02:26;
>>    cltt 5 2014/09/12 14:52:26;
>>    binding state active;
>>    next binding state free;
>>    rewind binding state free;
>>    hardware ethernet ;
>>    uid "\0018`w\033:\200";
>>    client-hostname "jcenter";
>> }
>> lease 172.16.2.13 {
>>    starts 5 2014/09/12 14:52:54;
>>    ends 5 2014/09/12 15:02:54;
>>    cltt 5 2014/09/12 14:52:54;
>>    binding state active;
>>    next binding state free;
>>    rewind binding state free;
>>    hardware ethernet ;
>>    uid "\0018`w\265w<";
>>    client-hostname "av01";
>> }
>>
>> I edited the MACs out here, and there were more, but I lost some of 
>> my scrollback buffer.
>>
>> On 09/11/2014 09:02 AM, L.P.H. van Belle wrote:
>>> and as tip why you revers is not working.
>>>
>>> check the info in /var/lib/dhcpd/
>>> and look what you clients where getting..
>>> this is how i solved my rev problem ;-)
>>>
>>>
>>>> -----Oorspronkelijk bericht-----
>>>> Van: ryana at reachtechfp.com
>>>> [mailto:samba-bounces at lists.samba.org] Namens Ryan Ashley
>>>> Verzonden: donderdag 11 september 2014 1:14
>>>> Aan: samba at lists.samba.org
>>>> Onderwerp: Re: [Samba] Strange DNS issue...
>>>>
>>>> Anybody? This is very strange and I cannot figure out why it is 
>>>> happening or why my reverse-DNS zones are not populating.
>>>>
>>>> On 09/09/2014 06:51 PM, Ryan Ashley wrote:
>>>>> Alright, things have been fine since the sharing issue, but
>>>> I finally
>>>>> decided to dig into why my reverse-DNS zones are empty, save one 
>>>>> single entry at the client location. What I found was very strange 
>>>>> indeed. I have some type of grayed out records I cannot delete 
>>>>> that are named after the hostnames of devices on my network. This 
>>>>> one has me. Here's a screenshot linked below, and my BIND/DHCP
>>>> configurations.
>>>>> http://dhta.oesm.org/dns.jpeg
>>>>>
>>>>> root at dc01:~# cat /etc/bind/named.conf # Required for SAMBA4 
>>>>> include "/var/lib/samba/private/named.conf";
>>>>>
>>>>> # Global options
>>>>> options {
>>>>>       auth-nxdomain yes;
>>>>>       directory "/var/cache/bind";
>>>>>
>>>>>       forwarders {
>>>>>         8.8.8.8;
>>>>>         8.8.4.4;
>>>>>       };
>>>>>
>>>>>       allow-transfer { none; };
>>>>>       notify no;
>>>>>       empty-zones-enable no;
>>>>>
>>>>>       allow-query {
>>>>>         127.0.0.1;
>>>>>         172.16.0.0/22;
>>>>>       };
>>>>>
>>>>>       allow-recursion {
>>>>>         127.0.0.1;
>>>>>         172.16.0.0/22;
>>>>>     };
>>>>>
>>>>>     tkey-gssapi-keytab "/var/lib/samba/private/dns.keytab";
>>>>> };
>>>>>
>>>>> # Root servers (required zone for recursive queries) zone "." {
>>>>>     type hint;
>>>>>     file "named.root";
>>>>> };
>>>>>
>>>>> # Required localhost forward/reverse zones zone "localhost" {
>>>>>     type master;
>>>>>     file "master/localhost.zone";
>>>>> };
>>>>>
>>>>> zone "0.0.127.in-addr.arpa" {
>>>>>     type master;
>>>>>     file "master/0.0.127.zone";
>>>>> };
>>>>>
>>>>> root at dc01:~# cat /etc/dhcp/dhcpd.conf ddns-update-style none; 
>>>>> option domain-name "truevine.lan"; option domain-name-servers 
>>>>> 172.16.0.1,172.16.0.2; default-lease-time 600; max-lease-time 
>>>>> 7200; authoritative; log-facility local7;
>>>>>
>>>>> subnet 172.16.0.0 netmask 255.255.252.0 {
>>>>>     range 172.16.2.1 172.16.2.100;
>>>>>     option routers 172.16.0.254;
>>>>>     option broadcast-address 172.16.3.255;
>>>>>     ddns-updates on;
>>>>>     ddns-update-style interim;
>>>>>     update-static-leases on;
>>>>> }
>>>>>
>>>>> That's it. Have I done something that would cause such an
>>>> odd thing to
>>>>> happen? Also, how do I remove those things?
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