[dns-operations] Best practices for Linux/UNIX stub resolver failover
William F. Maton Sotomayor
wmaton at ottix.net
Wed Apr 23 01:15:52 UTC 2014
On Tue, 22 Apr 2014, Ray Van Dolson wrote:
>>> 1. Make sure the first nameserver listed in resolv.conf never goes
>>> down by using Anycast DNS or some other failover mechanism like
>>> VRRP or CARP on the DNS server side.
I recall a paper that discusses this to some degree from a USENIX LISA...
ah, here it is:
https://www.usenix.org/legacy/events/lisa03/tech/full_papers/miller/miller_html/
Contains a comparison of various resolver behaviours and the like. Would
be interesting to see what, if any, changes after 10 years have gone by in
Table 1.
>>> What do the DNS experts say about best practices for DNS failover in
>>> the stub resolver?
>>
>> I'm curious to see what they think here too.
>
> Not an expert either, but do like the local resolver option a lot.
IANAE either, but anycast in the campus and wide area have done well in
these parts.
wfms
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