Sharing learnings from deploying on GCP Cloud Run

[robinjhuang]

I noticed that my geolocation was not being set. I tried trusting the IP ranges for my load balancers as well, but that did not work. I think an additional IP for my cloud run instance gets added as advised by this article, and that was hard to find documentation for a specific range.

Ended up just taking the first IP address (which in most cases should be the client's original IP) from the X-Forwarded-For header.

map $http_x_forwarded_for $first_x_forwarded_for {
        "~^(?P<first>[^,]+)" $first;
        default $http_x_forwarded_for;
    }

And send that as the Real-IP

proxy_set_header X-Real-IP $first_x_forwarded_for;