[Pdns-users] Possible tcp listener issue

[bert hubert]

To everybody seeing this issue (all two of you :)), can you grep the logfile
on:

"startDoResolve problem: "
"DNS parser error: "
"STL error: "
"Any other exception in a resolver context"

Without the quotes. If you see any of these lines, it might explain the
problem.

Thanks!


On Thu, Jun 17, 2010 at 04:16:50PM +0200, bert hubert wrote:
> On Thu, Jun 17, 2010 at 03:14:39PM +0100, Simon Bedford wrote:
> > Bert, its now climbing and not seeming to close any clients on both
> > servers now, although one is much worse than the other, one is at 11
> > and the other is at 108 tcp-clients at the moment.
> 
> Could you run:
> 
> # tcpdump -s 0 -w tcpdns port 53 and tcp
> 
> For a while (few hours)
> 
> And then send me the output of:
> 
> # tcpdump -n -r tcpdns
> 
> You can obfuscate IP addresses, as long as I can see patterns that would be
> great.
> 
> Thanks!
> 
> > 
> > Simon
> > 
> > Simon Bedford wrote:
> > >Please see answers below :-
> > >
> > >bert hubert wrote:
> > >>On Wed, Jun 16, 2010 at 11:10:29AM +0100, Simon Bedford wrote:
> > >>>I have been running the 'get tcp-clients' every 5 mins in cron on
> > >>>both servers, one is very low <10 and fluctuates, the other is just
> > >>>growing and growing and is currently at 55, hope this info is of
> > >>>value for debug.
> > >>Is there any difference between these two servers in terms of:
> > >>* Operating system
> > >No, both Debian Etch
> > >
> > >>* Number of processors
> > >No, slightly faster processors in the one with the most clients
> > >
> > >>* Network configuration (load balancer?)
> > >Different data centre but same network architecture, both loadbalanced.
> > >
> > >>* Use (mail servers versus residential internet connections?)
> > >No, config is identical and use is only as a cachingDNS and NTP server
> > >
> > >>* Anything else that comes to mind
> > >Nothing appears to be different, they are from a build that should
> > >be identical across the platform, although we will be looking to
> > >upgrade to Lenny in the near future.
> > >
> > >>Thanks!
> > >
> > >Thanks
> > >
> > >Simon
> > >
> > >
> > >_______________________________________________
> > >Pdns-users mailing list
> > >Pdns-users at mailman.powerdns.com
> > >http://mailman.powerdns.com/mailman/listinfo/pdns-users
> > 
> > 
> > 
> _______________________________________________
> Pdns-users mailing list
> Pdns-users at mailman.powerdns.com
> http://mailman.powerdns.com/mailman/listinfo/pdns-users
>