GeoIP and maintaining high availability
Doug Barton
dougb at dougbarton.us
Tue Jul 13 23:45:36 UTC 2010
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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