[Pdns-users] Negative cache problem since upgrade to 3.2

[bert hubert]

On Tue, Mar 09, 2010 at 03:06:09PM +0100, Oli Schacher wrote:
> Hi list
> 
> We upgraded our resolvers to 3.2 (Centos5, 64bit)
> After the upgrade, the setting max-negative-ttl=30 does not seem to work
> anymore. New records take up several minutes until they show up in the
> cache.
> Even if we explicitely perform a "rec_control wipe-cache" on those new A
> record we get NXDOMAIN from the recursor.

Dear mr Schacher,

This is an effect of the packet cache, which indeed does not take
max-negative-ttl into account, nor does it respond to 'rec_control
wipe-cache'.

It is really fast however. 

For now, you could solve this problem by setting packet-cache-ttl to a lower
number, say 20 seconds. 

Can you also open tickets on http://wiki.powerdns.com (login with the
password NoSpam) about this problem?

1) packet cache does not do max-negative-ttl
2) wipe-cache ignores the packetcache

Thanks!

> 
> If we restart the recursor, the new records show up immediately.
> Could you give me any hints on what could be wrong here?
> 
> 
> Thanks in advance
> Oli
> _______________________________________________
> Pdns-users mailing list
> Pdns-users at mailman.powerdns.com
> http://mailman.powerdns.com/mailman/listinfo/pdns-users
>