Issues consuming AWS API Gateway API

Question

Hi   
  
I have a simple HTTP API created using AWS API Gateway that uses a lambda integration to returns some data.  
I have also configured it with a custom DN using route53 (CNAME)  
  
Recently I have been getting the following error when making a call to the endpoint  
  
Error: Hostname/IP does not match certificate's altnames: Host: xxxxxx. is not in the cert's altnames: DNS:*.execute-api.eu-west-2.amazonaws.com  
  
Can anyone help with why this is happening? I have setup a certificate for my custom domain using AWS certificate manager as well so its all AWS services, but for some reason its just stopped working?  
  
Thanks  
Andrew

andrewkew-qc · Answer

Forget it I found someone on stackoverflow with the same problem.  
  
Seems to be down to the route53 record. Instead of a CNAME to the API invoke URL it needs to be an ALIAS A record to the region URL of the API  
  
I have detailed the solution here  
  
https://stackoverflow.com/a/63173982/966911  
  
Problem solved.

andrewkew-qc · Answer

I am weirdly getting this issue intermittently, when I make a call to the API in a browser I get the following error:

```
This server could not prove that it is api.xxxx.co.uk; 
its security certificate is from *.execute-api.eu-west-2.amazonaws.com. 
This may be caused by a misconfiguration or an attacker 
intercepting your connection.
```

Then it goes away and it works again? HUH? Any ideas?  
  
**AWS Support**, I am using all your services for this but for some reason there seems to be an issue, can someone please help?

Issues consuming AWS API Gateway API

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