[Pdns-users] powerdns authoritative server and recursor on one system

IRCHeaven Technical Support tech at ircheaven.net
Thu Oct 13 06:02:43 UTC 2011

Dear users,

Does someone know this problem?

Oct 13 07:58:53 Got a signal 11, attempting to print trace:
Oct 13 07:58:53 [0x491e10]
Oct 13 07:58:53 [0x695140]
Oct 13 07:58:53 /lib64/libc.so.6(+0x7698d) [0x7f9d6fedd98d]
Oct 13 07:58:53 /lib64/libc.so.6(+0x77173) [0x7f9d6fede173]
Oct 13 07:58:53 /lib64/libc.so.6(__libc_malloc+0x177) [0x7f9d6fee0b47]
Oct 13 07:58:53 /lib64/libc.so.6(+0x6683b) [0x7f9d6fecd83b]
Oct 13 07:58:53 /lib64/libnss_files.so.2(+0x6143) [0x7f9d701ec143]
Oct 13 07:58:53 /lib64/libnss_files.so.2(_nss_files_getgrnam_r+0x42) [0x7f9d701ec4f2]

Best Regards,

Patrick  |  Hostmaster, Sysadmin  |  IRCHeaven  | Tech at IRCHeaven.net |

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-----Original Message-----
From: Stefan Schmidt [mailto:zaphodb at zaphods.net] 
Sent: Thursday, 13 Oct, 2011 02:51
To: IRCHeaven Technical Support
Cc: Pdns-users at mailman.powerdns.com
Subject: Re: [Pdns-users] powerdns authoritative server and recursor on one system

On Wed, Oct 12, 2011 at 11:14 PM, IRCHeaven Technical Support <tech at ircheaven.net> wrote:
> Dear Users,

Dear Mr. Support,

> I have a question
> I have running pdns authoritative server and recursor on one system running.
> The authoritative server running on port 53 and recursor on port 5300 
> but if

This looks about right.

> I try to do ping google.com he gives no reply on it.

It's best to test for dns responses with the tool 'dig', this gives much valuable output when debugging.

> maby I have missed something or I forget something to define

Check if your allow-from (recursor) and allow-recursion (auth server) settings are allowing for the queries to be answered.

For debugging you can temporarily configure the recursor with trace=yes - it will then give heaps of output on what it's doing including of course when it gets a recursive query from a client (such as the pdns_server in your setup). Be sure to disable this for production or it will definitely clog up your log files.

> is there a documentation how to set the options for this?

About all the recursor settings please see http://doc.powerdns.com/built-in-recursor.html#recursor-settings and about the authoritative Server settings are listed at http://doc.powerdns.com/all-settings.html .

Please also check if you absolutely _must_ run the server in front of the recursor as it usually is best to separate those functions. -> http://cr.yp.to/djbdns/separation.html


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