NGINX proxy_pass or proxy_redirect

Question

Need help on Nginx proxy_pass.

From outside Nginx URL will be hit like this: http://some-IP:8080/v2/platform/general/activity/plan?.....

my downstream service looks like this: http://another-IP:8080/activity/plan?...

I want to get rid of

/v2/platform/general

from original public url and call my downstream service like above.

In Nginx, how do I redirect public access URL to downstream service?

I tried this:

location /v2/platform/general/ {
  rewrite ^/(.*) /$1 break;
  proxy_redirect off;
  proxy_pass http://another-IP:8080;
  proxy_set_header Host $host;

But it didn't work, any help appreciated.

Answer 1

proxy_pass and proxy_redirect have totally different functions. The proxy_redirect directive is only involved with changing the Location response header in a 3xx status message. See the NGINX proxy_redirect docs for details.

Your rewrite statement does nothing other than prevent further modification of the URI. This line needs to be deleted otherwise it will inhibit proxy_pass from mapping the URI. See below.

The proxy_pass directive can map the URI (e.g. from /v2/platform/general/foo to /foo) by appending a URI value to the proxy_pass value, which works in conjunction with the location value. See this document for details.

For example:

location /v2/platform/general/ {
    ...
    proxy_pass http://another-IP:8080/;
}

You may need to set the Host header only if your upstream server does not respond correctly to the value another-IP:8080.

You may need to add one or more proxy_redirect statements if your upstream server generates 3xx status responses with an incorrect value for the Location header value.