[Pdns-users] pdns stops responding to requests

Augie Schwer augie.schwer at gmail.com
Mon Dec 18 23:06:27 UTC 2006

On 12/17/06, Brandon Checketts <brandonc at webpipe.net> wrote:
> I've just replaced two BIND servers with PowerDNS Servers.   They are configured
> to use the gmysql backend, and MySQL is performing the replication between them.
>   Everything seems to be working fine, but on the "slave" server, pdns seems to
> just quit responding to DNS requests sometimes.   The web server portion of it
> continues to respond, but DNS queries just don't get answered.   Also, when it
> locks up, a netstat -l -n shows this (notice the Recv-Q for udp on port 53):

What version are you running? If there is nothing in the logs, then
you can try straceing one of the threads to see if that reveals any
more info. Is it both UDP and TCP that stop responding? Did you try
tcpdumping on the interface to make sure you are receiving the
requests. You can also look at the stats:

/etc/init.d/pdns dump

The latency and q-size stats may be revealing.

Augie Schwer    -    Augie at Schwer.us    -    http://schwer.us
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