How to use Nginx Proxy Manager to implement network traffic control

How to use Nginx Proxy Manager to achieve network traffic control

Overview:
Network traffic control refers to the management and control of network traffic to optimize the network performance to ensure network service quality. Nginx Proxy Manager is a proxy server management tool based on Nginx. By using it, we can easily implement network traffic control. This article will introduce how to use Nginx Proxy Manager to implement network traffic control and provide specific code examples.

Step 1: Install Nginx Proxy Manager

First, we need to install and configure Nginx Proxy Manager on our server. The following are the installation steps:

1. Install Node.js: Enter the following command in the terminal to install Node.js:

   curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
   sudo apt-get install -y nodejs

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2. Install Nginx Proxy Manager : Enter the following command in the terminal to install Nginx Proxy Manager:

   sudo npm install -g npm@latest
   sudo npm install -g pm2
   git clone https://github.com/jc21/nginx-proxy-manager.git
   cd nginx-proxy-manager
   npm ci

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3. Start Nginx Proxy Manager: Enter the following command in the terminal to start Nginx Proxy Manager:

   pm2 start ecosystem.config.js
   pm2 save

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Step 2: Create a proxy server

1. Open the web interface of Nginx Proxy Manager and enter the IP address and port number of the server in the browser, for example: http://localhost:81.
2. Click on the "Proxy Hosts" tab and then click on the "Add Proxy Host" button.
3. Fill in relevant information, including domain name, target URL, access restrictions, etc.
4. Click the "Save" button to save the settings.

Step 3: Configure flow control

1. Open the web interface of Nginx Proxy Manager and enter the server’s IP address and port number in the browser, for example: http:/ /localhost:81.
2. Click the "Proxy Hosts" tab, and then click the proxy server where you want to configure flow control.
3. On the proxy server's details page, find the "Proxy Rules" section and click the "Add Proxy Rule" button.
4. Fill in relevant information, including rule name, matching path, restriction options, etc.
5. Click the "Save" button to save the settings.

Code sample:

The following is a sample code that uses Nginx Proxy Manager to implement simple flow control:

location / {
   limit_req zone=my_zone burst=5 nodelay;
   proxy_pass http://backend;
}

location /status {
   stub_status on;
}

In the above example, we used Nginx’s The limit_req module is used to control request traffic. The limit zone (zone) is set to "my_zone" and the limit rate is set to 5 times/second. When the limit rate is exceeded, requests will be delayed (nodelay is false) or a 429 Too Many Requests response will be returned immediately (nodelay is true). At the same time, we also forward the request to the backend server by configuring a reverse proxy (proxy_pass).

Summary:
Using Nginx Proxy Manager can easily achieve network traffic control and improve network performance and service quality. By creating a proxy server and configuring traffic control rules, we can manage and control network traffic as needed. In this article, we explain how to install and configure Nginx Proxy Manager, and provide specific code examples to demonstrate how to implement traffic control. Hope this article is helpful to you!

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