[Pkg-pdns-maintainers] Bug#825849: powerdns 100% CPU usage

[Markus Koschany]

On 07.06.2016 20:13, Martin wrote:
> Hi Markus,
> 
> It's a pretty basic Powerdns installation with a MySQL backend. We're
> using one cryptokey for our domain names to serve DNSSEC to the world.
> Keys are signed with RSASHA256, and Powerdns generates domain name
> specific keys using this global key on the fly.
> 
> You could start by installing the latest pdns-server and
> pdns-backend-mysql packages together with the latest libbotan package
> and see if pdns starts using 100% CPU.

Hi Martin,

I installed pdns-server and the mysql backend but apparently there are
more steps involved to reproduce the issue. Can you or Christian provide
some minimal instructions how to setup a powerdns server with DNSSEC? I
have searched for some online documentation and tutorials but without
knowing your exact setup this is rather futile.

> Upgrading libbotan doesn't break pdns instantly, only after you restart
> pdns. That probably makes sense, but, just saying.

Yes, that makes sense. The old process is still available in your memory
and must be replaced by restarting the server.

Regards,

Markus


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