Detailed Log Analysis based on rndc stats!!

Mark Andrews marka at isc.org
Mon Jan 30 06:44:55 UTC 2012


In message <CANBtT6nxWb4fQYGev4X8_JL+m5hO7WfeniRxzg3PGVC-kZcJmg at mail.gmail.com>
, Shiva Raman writes:
> Hi Peter
> 
> Thanks a lot for your reply. I had enabled query-errors with debug level 2
> in my bind logging, now i am able to log all SERVFAIL related error logs in
> query-errors.log. But i am unable to log the NXDOMAIN error logs .

NXDOMAIN is not a error.  It is a *normal* response code in a well
running system.  Asking to log NXDOMAIN is like asking to log every
positive answer.

>    Referring to Bind documentation, i enabled delegation-only option(which
> Logs queries that have returned NXDOMAIN as the result of a delegation-only
> zone or a delegation-only statement in a hint or stub zone declaration) ,
> but this also not logging the NXDOMAIN errors. Kindly guide me whether any
> additional parameters to be enabled in query-errors to log NXDOMAIN also.

delegation-only does *not* log normal NXDOMAIN responses.  It logs
answers that are *forced* to NXDOMAIN.

> Regards
> 
> Shiva Raman
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org



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