[Pdns-users] Possible tcp listener issue

[bert hubert]

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
> 
> 
>