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Home Page: http://kvz.io/blog/2013/03/27/poormans-way-to-decent-dns-failover/
Let's Make DNS Outage Suck Less
Home Page: http://kvz.io/blog/2013/03/27/poormans-way-to-decent-dns-failover/
As mentioned in comment https://news.ycombinator.com/item?id=5451944, if cron fails (unlikely but still), a scenario can happen where an offline nameserver just sits there, and No resolving is possible. To defeat, also write the other nameservers to the config, just to be complete and extra safe
Hey hey, ran into this when I got bit by AWS's DNS blowing up as well.
Looks close to what we need, but wondering how you are resolving the RDS private IPs since that seems related (and I gather from your blog post comments you also rely on RDS).
Just switching the resolv to Google's DNS will get you public IPs no? Will that fly?
Wondering whether another solution would be to "cache" the private ips for a configurable set of hosts and then write those to /etc/hosts when the primary DNS fails.
Thoughts? If I added this would you be interested? Alternatively how do you deal with this?
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