My iOS software platform runs on AWS Elastic Beanstalk and has a URL we'll call "something.elasticbeanstalk.com". I have a website we'll call "website.com" I purchased and operate the DNS records for through Namecheap. I need to make the URL my iOS client apps use to connect to the server HTTPS since Apple is requiring this soon due to App Transport Security.
WHAT I THINK I'M SUPPOSED TO DO
What I think I'm supposed to do is, create an SSL certificate for "website.com" and apply that SSL certificate to the AWS EB load balancer. Then I need to create a subdomain for "website.com" that redirects traffic to "something.elasticbeanstalk.com". Client apps connect to the subdomain of "website.com" which is now HTTPS and redirects to "something.elsastic.beanstalk.com". Is that correct?
WHAT I'VE DONE SO FAR
So far, I created a SSL certificate for "website.com" using AWS Certificate Manager. For this I had to verify my email address associated with "website.com". I then applied that SSL certificate to my environment's load balancer int the AWS Management Console. After that, I went into Namecheap and followed this guide in the 'Domain Name & AWS 53 Management' section to do it.
I read in this article that I needed to create an alias and/or set up Nameservers in AWS Route53. I tried doing that but don't know what I'm doing and it seems to conflict with the Medium article I linked above that I followed telling me to change the CNAME record for the URL and the Redirect URL record for "website.com".
QUESTION
What do I do from here?
SITUATION
-I have a Parse Server on Elastic Beanstalk with URL “something.elasticbeanstalk.com”
-I have a domain with Namecheap called “website.com”
WHAT I NEEDED
I needed to make my client app connect to an HTTPS address since Apple is requiring it shortly with App Transport Security. Since I couldn’t get an SSL certificate using AWS certificate manager for “something.elasticbeanstalk.com”, I created one for “website.com”. I then needed to have my client app connect to the HTTPS “website.com” which would forward it over to “something.elasticbeanstalk.com”. This satisfied the HTTPS requirements of Apple.
HOW TO DO IT
Make an SSL certificate for “website.com” using AWS Certificate Manager. You will need to confirm the domain via a confirmation email to the administrator for it.
Apple the SSL certificate for “website.com” to the AWS EB Load Balancer. Go to your AWS EB Console, click "configuration", click "Load Balancing" under the "Network Tier" category. Now under the first category which is "Load Balancer", select the SSL record you made and apply it in the "SSL certificate ID" section.
Set a CNAME record for “website.com” with a host of whatever subdomain of “website.com” you want. I chose “data” as my host value and subdomain (so my subdomain is “data.website.com”). Set the value of the CNAME record to “something.elasticbeanstalk.com”. Wait for it to propagate. It’s usually pretty fast but not always.
(I’m unsure if this particular step is proper but it worked for me) Set the serverURL of Parse-Server to “https://something.elasticbeanstalk.com” and the publicServerURL to “https://data.something.com”
In the Parse “initializeWithConfiguration” method in your client app that enables the app to connect to the server, change the server URL to “https://data.something.com/parse”. NOTE: include the “/parse” which is the MOUNT PATH of the parse-server. This value MAY BE DIFFERENT for you depending on how you set it but I set it to “/parse” since that’s what I saw in the Parse-Server docs.
NOTES
-I deleted all Route53 records since they are irrelevant here since “something.com” DNS services are controlled by Namecheap.
-A Redirect URL record in Namecheap is unnecessary
来源：https://stackoverflow.com/questions/41513512/aws-elastic-beanstalk-namecheap-ssl-configuration