Change DNS A records dynamically

Question

For example, I'll buy domain name at godaddy.com. I'll configure it with 2 A records with IPs 123.0.0.1 and 123.0.0.2.
Is it possible to ping it for availability and change A records dynamically by some script?

As far as I know, GoDaddy does not have an API that will let you change DNS-settings via a script. What are you trying to accomplish with this? — Bart De Vos, Jun 22 '11 at 09:30

score 3 · Answer 1 · answered Jun 22 '11 at 09:30

There are ways to do dynamic updates with BIND. But they are server-specific, and must be enabled and configured on the server.

You really need to be asking Godaddy what they support in this area.

Also note that dynamic DNS is a very poor way to do failover, as to be effective, it requires setting a very short TTL, which ends up wasting lots of bandwidth, and is generally annoying.

joeqwerty · Answer 2 · 2011-06-22T20:50:32.337

1

by the sound of it, you have a dynamically assigned ip address from your ISP. You may want to move your DNS to an entity such as DynDNS.com and use a dynamic DNS client on one of your hosts to update your DNS when your dynamic ip address changes.

edited Jun 22 '11 at 20:50

answered Jun 22 '11 at 16:58

joeqwerty

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This. afraid.org is also a nice alternative. You can also create a CNAME record for your domain with GoDaddy and have it point to the DNS service so that it's always pointing to the right IP – uzzi09 Jun 22 '11 at 23:48

Change DNS A records dynamically

2 Answers2