On 03/11/2019 22:42, Steve Shipway wrote:
I've tried adding a second IP to the DNS server and placing the
resolver on that, so that I can set up notify to send to this as an
additional IP, but this again breaks and becomes problematic as we
then have 2 IPs for a single nameserver.
That's basically what you need to do with pdns.
In large ISP deployments, with thousands or millions of domains,
combining recursor and resolver results in major problems. Hence pdns
decided to stop supporting such configurations entirely.
In small enterprise deployments, where you control the clients as well
as the domains, a combined setup may work acceptably well. But
personally I'd keep them separate even in the smallest of deployments.
"Separate" could mean binding the two processes to different IPs on the
same server; or it could mean using containers (lxd/docker) or VMs on
the same server; or it could mean physically different servers. The
choice depends on your scale.
Regards,
Brian.
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