Reverse DNS on EC2

Arthur Coimbra asked:

I’m developing a restful API as a fun challenge. For that, I’ve got a server running on AWS and also a custom domain registered as I would like to use it as the address for my API calls.

I’ve been following this guide on youtube to use my custom domain name on my API: https://youtu.be/LUFn-QVcmB8?t=927
By 15:27 he mentions the need to set up a reverse DNS on the server, but I can’t find that option on AWS ec2.

RDNS on ec2 doesn’t seem to be as straightforward as in the video, and I couldn’t guide myself through the explanations I’ve found as I don’t have any knowledge of networking configuration. Does anyone know the steps I need to follow to configure rDNS on my instance?

My answer:


You don’t configure reverse DNS on an instance, but for an IP address. You must have given your instance a persistent Elastic IP address, and then you can request Amazon to set reverse DNS for that IP address.


View the full question and any other answers on Server Fault.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.