FreeBSD's bundled unbound answers SERVFAIL

[Wouter Wijngaards]

Hi Patrick,

On 10/02/2020 14:27, Patrick M. Hausen via Unbound-users wrote:
> Hi!
> 
> 
>> Am 10.02.2020 um 14:18 schrieb Daniel Ryšlink <ryslink at dialtelecom.cz>:
>> After that, increase debug level and check the debug log to see how the queries are processed - if the server fails, the debug log should contain exact infromation why it happens.
> 
> Can one increase the debug level for the already running process like
> "rndc trace" for a running BIND named?

unbound-control can modify the running process. unbound-control
verbosity 5 logs at high detail.

Best regards, Wouter

> 
> The problem arises very infrequently, so we did not want to have
> the debug log active permanently on all hosts (about 100 of them).
> Yet, once one of the unbound processes shows the problem, our
> Icinga will alarm us, so we can investigate ...
> 
> Thanks,
> Patrick
>