[Discuss] cluster DNS servers

[Dan Ritter]

On Fri, Mar 22, 2013 at 02:05:49PM -0400, Rich Pieri wrote:
> --On Friday, March 22, 2013 1:31 PM -0400 Dan Ritter
> <dsr at randomstring.org> wrote:
> 
> >The next best method would be to use a group of DNS servers that
> >had failover for the service IP address. There's no need for
> 
> You don't need or want failover for caching name servers. DNS
> clients have fault tolerance built in.

Usually with a 30 second timeout. I assumed (possibly
incorrectly) that that was what he wanted to avoid.

> If you shuffle the resolver lists on each client node then you get
> the benefits of a load balancer for zero cost.

I'm not sure what the benefit is of a load balancer here...

Anyway. Do you have any criticism of putting a local caching
resolver on each mail server? That's what I do.

-dsr-