Cloudfront custom-origin distribution returns 502 “ERROR The request could not be satisfied.” for some URLs

Question

We have a Cloudfront distribution with custom origin that has been working just fine for quite a long time, serving static assets for one of our sites. Just this morning, we

Answer 1

In my case, I use nginx as reverse-proxy for an API Gateway URL. I got same error.

I resolved the issue when I added the following two lines to the Nginx config:

proxy_set_header Host "XXXXXX.execute-api.REGION.amazonaws.com";
proxy_ssl_server_name on;

Source is here: Setting up proxy_pass on nginx to make API calls to API Gateway