Re: [Samba] (S4) Neither AXFR nor authoritative nameserving available?

2012-12-23 Thread Michael B. Trausch

On 12/22/2012 05:44 AM, Andrew Bartlett wrote:

On Tue, 2012-12-18 at 11:58 -0500, Michael B. Trausch wrote:

Hello all,

I'd like to have redundant DNS in our setup.  But it seems that Samba 4
does not yet support AXFR with its internal DNS server.  Alright, that's
fine, so I figured I'd configure the system such that at the very least,
a caching nameserver was sitting in front of it.  However, that doesn't
work; the caching nameserver (BIND 9) returns SERVFAIL, apparently
because Samba 4 isn't setting the authoritative bit on its DNS responses.


That's odd.  Please file a bug, so Kai can look into it.


Well, I finally got it working, after an update.  Yay.  :)

I still don't have the ability for AXFR, though, it seems.  Is that 
supported, or in-the-works?



Is this a known issue, a configuration error on my part, or something
entirely different altogether?


You could run another Samba DC to get the redundant DNS.


I _could_... but I'm not there yet, and Samba seems to drop queries a 
fair bit on a lightly-loaded (about 1 QPS) network; what I mean there is 
that we've observed failure-to-resolve several times a day.  This seems 
to have gone away now that we've turned off the forwarding option, and 
are using BIND in front of Samba 4 as a caching/forwarding nameserver. 
 I'll know more as the week goes by.



Another option is to run the bind9 server and the dlz plugin.


I'd opted to not set this domain up that way because I figured it'd be 
easier to manage if Samba handled the domain itself.  We could switch to 
BIND for the server, but I have three questions there:


1.  Can we switch from Samba 4 - BIND without reprovisioning?

2.  Is there any loss of client-side functionality (e.g., the Microsoft
DNS tool)?

3.  Are there any other downsides to using BIND over the internal Samba4
DNS?

--- Mike


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Re: [Samba] (S4) Neither AXFR nor authoritative nameserving available?

2012-12-23 Thread Andrew Bartlett
On Sun, 2012-12-23 at 14:20 -0500, Michael B. Trausch wrote:
 On 12/22/2012 05:44 AM, Andrew Bartlett wrote:
  On Tue, 2012-12-18 at 11:58 -0500, Michael B. Trausch wrote:
  Hello all,
 
  I'd like to have redundant DNS in our setup.  But it seems that Samba 4
  does not yet support AXFR with its internal DNS server.  Alright, that's
  fine, so I figured I'd configure the system such that at the very least,
  a caching nameserver was sitting in front of it.  However, that doesn't
  work; the caching nameserver (BIND 9) returns SERVFAIL, apparently
  because Samba 4 isn't setting the authoritative bit on its DNS responses.
 
  That's odd.  Please file a bug, so Kai can look into it.
 
 Well, I finally got it working, after an update.  Yay.  :)
 
 I still don't have the ability for AXFR, though, it seems.  Is that 
 supported, or in-the-works?

Neither, at this stage.

  Is this a known issue, a configuration error on my part, or something
  entirely different altogether?
 
  You could run another Samba DC to get the redundant DNS.
 
 I _could_... but I'm not there yet, and Samba seems to drop queries a 
 fair bit on a lightly-loaded (about 1 QPS) network; what I mean there is 
 that we've observed failure-to-resolve several times a day.  This seems 
 to have gone away now that we've turned off the forwarding option, and 
 are using BIND in front of Samba 4 as a caching/forwarding nameserver. 
   I'll know more as the week goes by.
 
  Another option is to run the bind9 server and the dlz plugin.
 
 I'd opted to not set this domain up that way because I figured it'd be 
 easier to manage if Samba handled the domain itself.  We could switch to 
 BIND for the server, but I have three questions there:
 
 1.  Can we switch from Samba 4 - BIND without reprovisioning?

Yes.  See the samba_upgradedns script, which handles the switching
required between backends.

 2.  Is there any loss of client-side functionality (e.g., the Microsoft
  DNS tool)?

No.

 3.  Are there any other downsides to using BIND over the internal Samba4
  DNS?

The internal DNS is simpler, follows our internal handling of 'bind
interfaces' and starts up with the rest of Samba.

Andrew Bartlett

-- 
Andrew Bartletthttp://samba.org/~abartlet/
Authentication Developer, Samba Team   http://samba.org


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Re: [Samba] (S4) Neither AXFR nor authoritative nameserving available?

2012-12-22 Thread Andrew Bartlett
On Tue, 2012-12-18 at 11:58 -0500, Michael B. Trausch wrote:
 Hello all,
 
 I'd like to have redundant DNS in our setup.  But it seems that Samba 4 
 does not yet support AXFR with its internal DNS server.  Alright, that's 
 fine, so I figured I'd configure the system such that at the very least, 
 a caching nameserver was sitting in front of it.  However, that doesn't 
 work; the caching nameserver (BIND 9) returns SERVFAIL, apparently 
 because Samba 4 isn't setting the authoritative bit on its DNS responses.

That's odd.  Please file a bug, so Kai can look into it. 

 Is this a known issue, a configuration error on my part, or something 
 entirely different altogether?

You could run another Samba DC to get the redundant DNS. 

Another option is to run the bind9 server and the dlz plugin.

Andrew Bartlett

-- 
Andrew Bartletthttp://samba.org/~abartlet/
Authentication Developer, Samba Team   http://samba.org


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[Samba] (S4) Neither AXFR nor authoritative nameserving available?

2012-12-18 Thread Michael B. Trausch

Hello all,

I'd like to have redundant DNS in our setup.  But it seems that Samba 4 
does not yet support AXFR with its internal DNS server.  Alright, that's 
fine, so I figured I'd configure the system such that at the very least, 
a caching nameserver was sitting in front of it.  However, that doesn't 
work; the caching nameserver (BIND 9) returns SERVFAIL, apparently 
because Samba 4 isn't setting the authoritative bit on its DNS responses.


Is this a known issue, a configuration error on my part, or something 
entirely different altogether?


Thanks,
Mike

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