Master/slave configuration

[Phil Mayers]

On 03/08/2012 06:26 PM, michoski wrote:

> Meant to add one thing...  In our configuration, we actually have two
> recursive VIPs per site, and even considered three (internal IPs are cheap).

We do this.

We also make the two different VIPs use different underlying tech - one 
is an anycast route advertised with eBGP, the other is via 
load-balancing. The diversity of tech gives us a bit more resilience and 
flexibility - taking out the load-balancer no longer destroys DNS, for 
example.