By using AWS re:Post, you agree to the Terms of Use
/Cloudformation EIP Reverse DNS/

Cloudformation EIP Reverse DNS



Is it possible to assign a reverse DNS name to an AWS::EC2::EIP resource via CloudFormation?


2 Answers

I don't believe this is possible via the AWS::EC2::EIP resource type. You could create a custom resource (or a registry resource) to call the ModifyAddressAttribute API (e.g. via boto3) which could update the EIP configuration after it's created.

However, there's a requirement that the reverse DNS entry has a matching forward DNS, so you would also need to create a suitable DNS entry (either in Route53, or in your own DNS system which again would be via a custom resource) before CloudFormation creates/updates the reverse DNS. You can use the DependsOn attribute if necessary for that.

answered 3 months ago

Thanks for the response, I'll look into creating a custom resource. Longer term, is it possible to create a feature request for this functionality within Cloudformation itself?

answered 3 months ago

You are not logged in. Log in to post an answer.

A good answer clearly answers the question and provides constructive feedback and encourages professional growth in the question asker.

Guidelines for Answering Questions