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geo dns
https://forum.linode.com/viewtopic.php?f=19&t=5301		 Page 1 of 1
Author:  uslinode [ Sat Mar 13, 2010 8:24 pm ]
Post subject:  geo dns
I was wondering what is a simplest way to do (geo) load balancing (gslb) (I'm not too concerned with fail-over or high availability, just latency)?

I don't want to simply do round robin dns or use sub-domains. I would like the users in Europe to be directed to the linode there and the ones in the US to be directed here for example.

I came across this link in the Linode library:
http://library.linode.com/networking/ns ... tative-dns

But am not sure how this would work?
User -> User ISP -> Internet -> Linode DNS -> My Linode NSD ?

Or would the Linode DNS be out of the picture? What if My Linodde NSD is down?

Would running a NSD server solve this problem, or would I need to run PowerDNS for example?

If anyone has any information or has setup something similar in the past, please help! Any help or guidance is greatly appreciated.

Thanks in advance.
Author:  ohkus [ Sat Mar 13, 2010 8:36 pm ]
Post subject: 
This is one of those things that you should probably outsource. Geo DNS depends heavily on knowing where the request is coming from and sometimes users can be using DNS servers not geographically close to them.

Have you thought about using anycast dns and an anycast cdn for your users?
Author:  uslinode [ Sat Mar 13, 2010 10:08 pm ]
Post subject: 
Thanks for responding... unfortunately, outsourcing is not an option at this point :)

I don't know much about anycast... I'll start looking into that.
Author:  otherbbs [ Tue Mar 16, 2010 11:19 pm ]
Post subject:  geo dns
Here is a how to create your own using Bind:

http://phix.me/geodns/
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