Wednesday, December 22, 2021

Re: Recommendations on Buffer Space for Busy Unbound Resolver Service for a network

On 2021-12-22, Dirk Coetzee <Dirk@best-it.tech> wrote:
> Hi Tom,
>
> I would recommend debugging using "unbound-control stats_noreset" and referencing the unbound configuration documentation at https://www.nlnetlabs.nl/documentation/unbound/unbound.conf/

Also check for "dropped due to full socket buffers" in netstat -s -p udp,
some have reported needing to raise net.inet.udp.*space sysctls.

You might also consider front-ending with dnsdist. As well as answering hot
requests very quickly, that could also simplify things for maintenance.

> On Tue, 21 Dec 2021 at 21:15, Tom Smyth <tom.smyth@wirelessconnect.eu>
> wrote:
>
>> Recommendations on Buffer Space for Busy Unbound Resolver Service for
>> a network serving a 3000, customers


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