I'm working on deploying pdns, and we had intended to use native replication (mysql-replication).
Our idea was to have one master dns server that sits behind a firewall, and our public facing servers replicate from it. This works well for 90%+ of the domains we host. We do have a few we have to slave from our clients though. My original plan was to have nproxy sit on the public facing name servers to forward the notify to the master dns server behind the firewall, the master then does the axfr from our client's server, populates mysql with the new zone info, that then replicates out to the public facing servers. Then I got this error when trying to start nproxy (IP address censored): nproxy: Fatal: Binding socket for incoming packets to 'a.b.c.d:53': Address already in use Which of course makes sense after seeing it, pdns is already binding to the same IP/port. So, my question is this... Can the functionality of nproxy be rolled into pdns so that pdns itself can forward the notify to another instance of pdns (on the master server), or can nproxy and pdns be made to work on the same IP. I looked into trying to see if I could get iptables to split out the notify messages to a different destination IP so I could put nproxy on a different IP than pdns, but, I didn't figure out a good (reliable) way to do this. Any help would be appreciated. Fred Wittekind
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