我可以使用根域映射为alb吗？

Question

I understand we can map AWS ALB URL to CNAME and then use with subdomain. Route53 provides Alias which allows us to map ALB URL to root domain, say example.com , Does others DNS providers have this options? Say GoDaddy or Network Solutions.

Answer 1

The alias feature is something that is available in AWS Route53 only. The alias does the mapping internally and assigns the IP address. If you do nslookup for alias you will surely get an aws ip address. for other dns provider to be aware of what aws is assigning ip address to an ELB is not possible until and unless both business want to do so.

But there is hope! and this can be achieved by using AWS Lambda and AWS Cloudwatch Scheduled Events

You would need to query the IP address for your ELB and then use Godaddy's API to update your DNS entry over there, you can set an interval like every 5 minutes to do this.