[Pdns-users] Query Logging

Max Clark max at clarksys.com
Thu Sep 29 19:16:46 UTC 2005


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So then crazy question... Companies like UltraDNS, Netriplex, 
DNSMadeEasy, etc... make money based on the number of queries a 
particular domain/RR gets. How do they track this?

- -Max

Brad Knowles wrote:
> At 11:19 AM -0700 2005-09-29, Max Clark wrote:
> 
>>  I have a powerdns installation with a large amount of domains running on
>>  the system. Recently the system has become completely overwhelmed with
>>  queries (I am assuming that it is due to low ttl's). While the web
>>  interface gives a lot of great information - is it possible to log each
>>  query request to a running file for after the fact analysis?
> 
> 
>     I'm not familiar with the PowerDNS implementation of query logging, 
> but for BIND turning this on will result in roughly a factor of ten to a 
> hundred increase in load on the server.  This is a result of the massive 
> increase in I/O caused by writing all this data to the file.
> 
>     If you can afford to turn on query logging, you don't need it. If 
> you need it, you can't afford to turn it on.
> 

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