Re: [squid-users] DNS timeouts - unable to reduce timeout

On 20/11/10 08:41, declanw_at_is.bbc.co.uk wrote:
> Hullo.
>
> I have a squid 3.1.9, which has an acl that needs to know the DNS domain
> name of a target IP (yes, I know it slows things down, but it has to stay)
>
> I have a lot of users viewing Flash streams hosted by Akamai, but Akamai's
> reverse DNS servers for e.g. 83.231.150.45 are currently completely dead.
>
> Squid is taking 90 seconds to give up on the reverse DNS lookup for
> http://83.231.150.45/fcs/ident2 and proceed with making the connection.
> Unfortunately, the Flash Player only seems to wait 30 seconds before it
> declares the content stream broken.
>
> I cannot find a setting to make squid timeout DNS faster.
> I have tried increasing 'negative_dns_ttl', but it didn't seem to have any effect.
> 'dns_timeout 10 seconds' had no effect either, which suprised me.

Ouch. Yes that dns_timeout is the option which should have worked.

>
> The only DNS option I am using is 'dns_nameservers 127.0.0.1' which points
> at a caching BIND. I am not using an external DNS resolver.
>

Bind will also have timeout settings somewhere which can help.

Amos

-- 
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