GeoIP and maintaining high availability

[Doug Barton]

On Fri, 9 Jul 2010, Tomasz Chmielewski wrote:

> Hi,
>
> I'm about to set up bind with GeoIP patches.
>
> What I'm not sure, is how do you guys handle high availability?
>
> Suppose I have zones for Americas and Europe,

Just to be clear, you're saying that you have 2 different zones, one 
with the European IP addresses for the content server, and one with 
American, and a resolver gets an answer from one zone or the other based 
on a decision from the GeoIP stuff, right?

> and a destination server in Europe dies - how do you handle it so that 
> new (i.e. web) requests hit American servers only?
>
> Set TTL to low values (i.e. 10 minutes max) and reconfigure the zones if 
> European servers are down?

Based on your parameters below, and what you said elsewhere in the 
thread; yes, that's your only option.


hth,

Doug

> Something else?
>
> I assume typical hosting, without access to sophisticated network settings, 
> like BGP.


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