Augie, Thank you for your response. I'm running version 2.9.20 that was installed from the pdns-static-2.9.20-1 RPM. UDP is definitely failing, not sure about TCP as we get very few TCP Requests.
I've just installed strace, and can run it. Each pdns_server-instance processes display different things, but I'm not a programmer, so I don't understand much of the output. I can pick out the three processes that are doing the MySQL queries, and the one that looks like its receiving/sending the actual DNS traffic, so I will do an strace on it the next time that it fails to see if it identifies anything. I will also try the pdns "dump" and see if that reveals anything. I looked at a tcpdump that I had running at the time of a failure and didn't see anything unusual, just DNS requests, MySQL lookups/replys and DNS answers. Then, when it fails, only incoming DNS requests with no other traffic until it is restarted. Thanks, Brandon Checketts Webpipe.net System Administrator Augie Schwer wrote: > On 12/17/06, Brandon Checketts <[EMAIL PROTECTED]> 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. > > _______________________________________________ Pdns-users mailing list [email protected] http://mailman.powerdns.com/mailman/listinfo/pdns-users
