[Unbound-users] unbound occasionally does not answer
wouter at NLnetLabs.nl
Fri Aug 14 06:57:08 UTC 2009
-----BEGIN PGP SIGNED MESSAGE-----
Can you tell me the names of the queries (off-list ? ).
Perhaps they are misconfigured domains of some sort.
I believe I solved Attila's problems from June.
If you dig for them yourself, do you get an answer?
And with dig +cdflag (to see if they are 'bogus').
On 08/13/2009 07:28 PM, Felix Schueren wrote:
> and sorry for starting a new thread when the last one is from June - I
> subscribed only recently and the mail archive does not show mail ids.
> Anyway, I'm referring to the thread from Attila Nagy: "No answers from
> unbound occasionally" - we're seeing much the same symptoms (using
> 1.3.2), i.e. unbound sometimes not answering queries, and debugging is a
> pain - we're running a load-balanced setup with currently 3 unbound
> nodes, around 22k q/s, each unbound node doing ~6-8k qps. It usually
> works fast & fine, but some queries appear to get eaten - we're getting
> occasional dns resolution errors when using unbound as cache that we
> never got with our dnscache (djb) setup. I've debugged as far as seeing
> that the queries reach unbound (they get logged), but I don't know
> whether unbound answered and the packets got lost, or if unbound simply
> did not answer at all.
> Any ideas on debugging this? "Occasionally" means a couple 100 queries
> per day (out of roughly 1.1G total queries). My "exceeded" (jostle)
> counter is 0, average number of waiting requests is <10 per hosts.
> Kind regards,
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/
-----END PGP SIGNATURE-----
More information about the Unbound-users