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Do you know Nginx? How to use Nginx reverse proxy operation

Do you know Nginx? How to use Nginx reverse proxy operation

Updated: December 2, 2024 09:23:53 Author: Wang Tiezhu6
Nginx is a high-performance HTTP and reverse proxy server that can be used for reverse proxy. The client only interacts with Nginx and does not know the existence of the backend server. The following is a simple Nginx reverse proxy configuration example. Interested friends follow the editor to take a look.

I know Nginx. It is a high-performance HTTP and reverse proxy server, which is also used as a mail proxy server.

Yes, I know how to use Nginx for reverse proxying. Reverse proxy means that Nginx receives a client's request, then forwards the request to one or more backend servers, and finally returns the backend server's response to the client. The client only interacts with Nginx without knowing the existence of the backend server.

Here is a simple example of how to configure Nginx reverse proxy:

server {
    listen 80;
    server_name ;
    location / {
        proxy_pass http://backend_servers;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}
upstream backend_servers {
    server :8080;
    server :8080;
}

explain:

  • server { ... }: Define a virtual server.
  • listen 80;: Listen to port 80.
  • server_name ;: Specify the server name.
  • location / { ... }: Match all requests.
  • proxy_pass http://backend_servers;: Forward the request to the namebackend_serversupstream.
  • proxy_set_header Host $host;: Forwards the original requested Host header information to the backend server.
  • proxy_set_header X-Real-IP $remote_addr;: Forward the client's real IP address to the backend server.
  • proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;: Forwards the X-Forwarded-For header information containing the client IP address and the intermediate proxy server IP address to the backend server.
  • upstream backend_servers { ... }: Define the backend server group.
  • server :8080;: The address and port of backend server 1.
  • server :8080;: The address and port of backend server 2. This enables load balancing, and Nginx uses a polling algorithm by default to distributing requests to different backend servers.

Other common configurations:

  • proxy_redirect: Modify the Location header information returned by the backend server.
  • proxy_buffering: Enable or disable response buffering.
  • proxy_cache: Configure cache.
  • health_check: Configure health checks to automatically remove unavailable backend servers.

This is just a simple example. Nginx reverse proxy has many advanced configurations that can be adjusted according to actual needs. For example, you can configure different load balancing algorithms, SSL encryption, caching, access control, and more. It is recommended to consult the official Nginx documentation for more information.

This article about whether you know Nginx? This is the end of this article about how to use Nginx reverse proxy. For more related content on Nginx reverse proxy, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!

  • Nginx
  • Reverse proxy

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