thanks Ruslan, it works now :)

On Mon, Aug 13, 2012 at 5:47 PM, Ruslan Ermilov <ru@nginx.com> wrote:

> On Mon, Aug 13, 2012 at 05:20:40PM +0800, Geoge.Q wrote:
> > hi Guys:
> > When I run NGINX as a proxy and set a resolver(such as 8.8.8.8), I found
> > out if DNS fail to resolve, 502 is popped up.
> > We can not set two or more DNS entry, so how to handle such situation?
>
> To answer this specific question: upgrade. Recent versions of nginx
> (1.1.7+,
> 1.2.x, 1.3.x) support multiple resolvers.
>
> http://nginx.org/r/resolver
>
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