I have a custom domain setup in route53 and using rout53 as domain service provider. I have a static page hosted in aws s3 bucket which I am using as the home page of the site. In route53 I have mapped the aws s3 url to my custom domain by adding alias records as per this document.

I also have some lambda functions, which serves html pages on requests. Now I am trying to map the api endpoint of these lambda functions to my custom domain.

The flow is mainly like this, when the user hits the home website i.e. xyz.com, the homepage is served from the s3 static site. When the user navigates to other page say xyz.com/products/productId, the html is served from the lambda function. I am able to follow and do most of the steps for mapping api gateway endpoint to custom domain, but it's at adding DNS records I am facing the issue and getting the error A record with specified name already exists, which is understandable as I have already added the A record for routing to s3 bucket for my root domain.

My question is, can I add multiple records for the same type A in aws? Or is there other way to approach this problem?

CodePudding user response：

No, you can't do it this way. A DNS name can only resolve to one thing.

Instead, you could create a subdomain so that:

• xyz.com --> Amazon S3 bucket
• products.xyz.com --> API Gateway

You could pass the productId as a parameter (eg products.xyz.com/?productId=42).