[Pdns-users] pdns server fails every morning when it starts getting used.

[Peter Nunn]

Thanks for the input so far guys.

I'm running version 3.0 according to pdns_control and have tried changing the 
recursor to 8.8.8.8 (I initially tired another isp's dns but that broke as it 
was not forwarding requests from domains outside its own).

With it set to 8.8.8.8 I'm still getting a lot of timeouts in the log. After 
restarting pdns it usually works fine for a number of hours, then the timeouts 
start to build up it seems.

However, even with the timeouts at the moment it still seems to be processing 
requests.

Peter.

-- 

Director
InfoTeq Pty Ltd
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03 9017 2707
On Thu, 8 Jan 2015 09:47:03 AM bert hubert wrote:
> On Thu, Jan 08, 2015 at 09:17:38AM +1100, Peter Nunn wrote:
> > I've got a pdns server at one site that is causing me massive headaches.
> > Every morning when the staff come in and start using it (and were not
> > talking large numbers) it fails to serve external dns and has to be
> > restarted (usually) or rebooted.
> 
> Which version of PowerDNS do you run?
> 
> The recursor you specify is in fact an open recursor. This means it is
> likely participating on DNS reflection attacks, and might therefore be slow
> at times.  From here (in europe at least) is is very slow, so the timeout
> may actually be real.
> 
> Does a restart always fix the issue for you?
> 
> > but as far as I can determine, the recursed dns server is quite happily
> > returning results.
> 
> Can you check 'dig ds9a.nl @220.233.0.4' whenever you find that PowerDNS is
> having problems with your recursor?
> 
> 	Bert