High-availability architecture design: using Nginx Proxy Manager to achieve fault recovery and load balancing

High availability architecture design: using Nginx Proxy Manager to achieve fault recovery and load balancing

Abstract:
With the rapid development of the Internet, the high availability of the system has Become one of the goals pursued by the enterprise. This article will introduce how to use Nginx Proxy Manager to implement high-availability architecture design and provide specific code examples.

1. Introduction
High availability means that the system can continue to provide services during normal operation and can quickly recover from failures even if some nodes or components fail. Nginx Proxy Manager is a graphical tool for configuring and managing Nginx reverse proxy. Through its powerful load balancing function, it can achieve high system availability.

2. Architecture design
In high-availability architecture design, we can achieve system redundancy and fault recovery by using multiple servers and load balancing. The specific implementation ideas are as follows:

1. Use multiple servers to build a cluster, where each server runs the same application and configuration.
2. Add an Nginx Proxy Manager in front of the cluster as a reverse proxy server.
3. Nginx Proxy Manager will forward requests to servers in the cluster according to preset rules to achieve load balancing.
4. When a server fails, Nginx Proxy Manager will automatically forward the request to other normally running servers to achieve rapid failure recovery.

3. Configuration file example
The following is an example of the configuration file of Nginx Proxy Manager, which is used to achieve load balancing and fault recovery. Please note that actual configuration files may vary depending on your situation.

http {
    upstream backend {
        server backend1.example.com;
        server backend2.example.com;
        server backend3.example.com backup;
    }
    
    server {
        listen 80;
        
        location / {
            proxy_pass http://backend;
        }
    }
}

In the above example configuration, we achieve load balancing by defining multiple servers in upstream. Among them, backend1.example.com, backend2.example.com and backend3.example.com are our cluster servers. At the same time, we added the "backup" keyword after the third server, indicating that the server is a backup server and will receive requests when other servers fail.

4. Failure recovery test
In order to verify the high availability of the system, we can conduct the following failure recovery test:

1. Stop one of the cluster servers and observe whether the Nginx Proxy Manager will The request is forwarded to other functioning servers.
2. Resume the stopped server and observe again whether Nginx Proxy Manager distributes requests evenly to all servers.

Through the above tests, we can ensure that Nginx Proxy Manager correctly implements the failure recovery and load balancing functions.

5. Summary
This article introduces how to use Nginx Proxy Manager to achieve high availability architecture design, and gives specific code examples. By properly configuring Nginx Proxy Manager, we can easily achieve system failure recovery and load balancing, thereby improving system availability and reliability.

Although Nginx Proxy Manager is a powerful tool, it needs to be adjusted and optimized according to specific situations in actual applications. In addition, you also need to pay attention to factors such as server hardware and network environment to ensure that the system can run stably and efficiently.

I hope this article will be helpful to readers when designing a high-availability architecture, and encourage everyone to actively explore and use more technical means to continuously improve the usability and stability of the system.

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