Nginx Server Configuration: Proxy Pass, URL Rewrites, SSL, and Error Pages

The guide explains how to configure an Nginx server to listen on port 80, serve static files, and proxy requests to different backend APIs. It also shows how to define custom error pages and enable HTTPS with SSL certificates.

server {
    listen       80;
    root         /data/php/;
    server_name  api.open.com;

    # URL rewrite for test1api
    location ^~ /test1api/ {
        proxy_set_header   Host test1api.open.com;
        proxy_set_header   X-forwarded-for $proxy_add_x_forwarded_for;
        proxy_set_header   X-real-ip        $remote_addr;
        proxy_pass         http://test1api.open.com/;
    }

    # URL rewrite for test2api
    location ^~ /test2api/ {
        proxy_set_header   Host test2api.open.com;
        proxy_set_header   X-forwarded-for $proxy_add_x_forwarded_for;
        proxy_set_header   X-real-ip        $remote_addr;
        proxy_pass         http://test2api.open.com/;
    }

    # Custom error pages
    error_page 404 /404.html;
    location = /404.html {
        root /usr/share/nginx/html;
    }
    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }
}

For HTTPS, the configuration adds SSL settings and points to the certificate and key files.

server {
    listen       443;
    root         /data/php/;
    server_name  api.open.com;
    ssl on;
    ssl_certificate      /usr/local/ssl/1_api.open.com_bundle.crt;
    ssl_certificate_key  /usr/local/ssl/1_api.open.com.key;
}

Repeated sections illustrate how the same URL rewrite blocks can be placed in both HTTP and HTTPS server blocks. The article ends with a decorative line and a list of recommended reading links.