What settings need to be changed to allow EC2 instances to use Amazon's Route 53 for DNS?

Posted by ks78 on Server Fault See other posts from Server Fault or by ks78
Published on 2011-02-15T15:18:49Z Indexed on 2011/02/15 15:27 UTC
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ubuntu

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dns

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firewall

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amazon-ec2

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amazon-web-services

I have a number of Amazon EC2 instances, all running Ubuntu, which I'd like to configure to use Amazon's Route 53.

I setup a script, following Shlomo Swidler's article, but ran into script-related issues, which were answered here. Now, I have the script working, but my instances are still not able to access Route 53's DNS. By this I mean, they are not able to resolve hostnames to IP addresses.

My instances are currently configured with the DNS server IP address Amazon pushes out to them by default, does that need to be changed when using Route 53?

I'm also IP-restricting my instances using the Security Groups. Could that be the problem?

Is there a certain IP address or port I should open to allow communication with Route 53?

It seems that DNS requests should be originating from my instances so the Security Groups shouldn't be an issue, but I've been wrong before.

If anyone has any ideas, I'd really appreciate it.

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