[dnsdist] greqp() output columns

[Remi Gacogne]

On 02/10/2023 19:17, Christoph via dnsdist wrote:
>> I don't think we have a way to log only these, unfortunately :-/ If 
>> you have the dnsdist console set up, you can use grepq('1000ms') to 
>> look at all queries that took more than 1 second, which is usually 
>> indicative of a problem, or even grepq('2000ms'), as dnsdist records 
>> timeouts with a very high response time.
> 
> Thanks for this suggestion.
> 
> out of ~200 lines from the grepq('3000ms') output 184 lines end with
> ... T.O RD No Error. 0 answers
> 
> examples:
> aPPLE.CoM.     A     T.O       RD    No Error. 0 answers
> fACeboOK.COm.   AAAA  T.O       RD    No Error. 0 answers
> 
> does "T.O" in the Lat. column stand for timeout?

Yes, it means that dnsdist believes it did not get a response from the 
backend in time.

Best regards,
-- 
Remi Gacogne
PowerDNS.COM BV - https://www.powerdns.com/