[Pdns-users] Fwd: ISSUE MIGRATION DNS FROM POWERDNS TO CLOUD

[Brian Candler]

On 11/09/2019 09:42, seddik alaoui ismaili wrote:
> I'd like to track domain requests on both NS, just to see if queries 
> still arrive on both DNS servers.
> An idea about a tool ? I've seen rec_control can do it, except there's 
> not enough documentation on it, have you already installed it? 

rec_control is for the powerdns recursor, but you're talking about 
powerdns authoritative.

There is the log_all_queries 
<https://doc.powerdns.com/authoritative/settings.html#log-dns-queries> 
option, but I would rather not run that on a production server.

Therefore, if your DNS traffic is not too high, I would be inclined to 
use either packetbeat <https://www.elastic.co/products/beats/packetbeat> 
or just tcpdump/wireshark to capture and decode the DNS traffic - then 
grep it for what you're looking for.  It's the least invasive way of 
doing it.

Regards,

Brian.

P.S. If you wanted to build a scalable, permanent way of doing this then 
you could look at dnsdist with protobuf or dnstap export - but I think 
that's overkill here.

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