[Samba] Strange DNS issue...
Daniel Müller
mueller at tropenklinik.de
Tue Sep 16 00:39:55 MDT 2014
"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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>>>
>>>
>
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