How to re-use NGINX proxy settings in several locations

Question

I have the need to restrict access to certain files based on a query string parameter. I have an NGINX proxy server that sits in front of several other nginx web servers for load balancing. I have decided to enforce this query string parameter at the proxy server level in order to consolidate the configuration changes. This has added a bit of complexity to my setup because the request can not get trapped in the if as it needs to be sent upstream.

server {
        listen 443;
        # SSL Settings

        server_name staging.xxxx.com;

        location / {
                proxy_pass http://webdav-cluster;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-Real-IP       $remote_addr;
                proxy_set_header Host            $http_host;
        }

        # Unless the correct application token is passed in as a query parameter
        # then deny access.
        location ~ \/protected\/.*txt$ {
                if ($arg_secret != abc) {
                        return 403;
                }

                proxy_pass http://webdav-cluster;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-Real-IP       $remote_addr;
                proxy_set_header Host            $http_host;
        }
}

Is there a way to store those 4 proxy lines in a location or variable and then internally redirect to that with one line? I may also use the same settings in different virtual hosts.

Answer 1

In this case you should use the include directive: http://nginx.org/r/include