On 21/10/10 12:50, Stephane Bortzmeyer wrote:
Unlike the failure of an authoritative name server, the failure of a
resolver is not really transparent for the Unix stub resolver, as you
have discovered. You may consider solutions using a redundancy at
layer 3 such as VRRP or CARP.
Yeah, we've observed this.
Our primary and secondary DNS IPs are actually virtual IPs; one is via a
layer4 loadbalancer, the other via an eBGP injected route (for
diversity) pointing at 4 real resolvers.
You can alleviate it with nscd on the clients, but that has its own
problems.
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