How do I configure nginx to return http status code 429 (Too Many Requests) instead of the default 503 (Service Unavailable) when throttling/rate limiting?
FYI, I'm using nginx as a reverse proxy with the HttpLimitReqModule. The draft spec for 429 status code is RFC6585.
This (closed) question on stackexchanged shows that it is possible to use the error_page directive. However, I don't want to return a 429 if there really is a server problem (not the customer hitting us too much) and the server should be returning 503 Service Unavailable.