How to deploy nginx nodejs

Overview

In modern web application development, Nginx and Node.js are two very important tools. Nginx, as a high-performance web server, is mainly used to process HTTP requests and static files. Access; Node.js is widely used to build high-performance web applications and server-side APIs, and is favored for its excellent asynchronous, non-blocking IO model and rich third-party module ecosystem.

In this article, we will introduce how to deploy Nginx and Node.js on a Linux server at the same time, and use the reverse proxy function of Nginx to improve the performance and reliability of our Web application, and finally achieve a Efficient and stable Web services.

Preparation

In order to complete this tutorial, we need a server running the Ubuntu 18.04 LTS operating system. We also need to install the latest versions of Node.js and Nginx.

Installing Node.js

First, we need to install Node.js for our server. We will use nvm (Node Version Manager) to manage our Node.js versions as it makes it easy to install and switch between different Node.js versions.

1. Install nvm

First, we need to download the nvm installation script using the curl command:

curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.36.0/install.sh | bash

Then, we run the following command to apply the configuration changes:

source ~/.bashrc

Now, nvm has been installed on our server.

2. Installing Node.js

We can check the available Node.js versions using the following command:

nvm ls-remote

Then, we select the one we want version of Node.js that you want to install and use the following command to install it:

nvm install 14.16.1  // 这里我们选择的是 v14.16.1 版本

Now, we have successfully installed Node.js.

Install Nginx

Next, we need to install the Nginx server to handle HTTP requests and read static files. On Ubuntu 18.04, we can use the following command to install Nginx:

sudo apt-get update
sudo apt-get install nginx

After the installation is complete, we can use the following command to start the Nginx service:

sudo systemctl start nginx

Then, we can use the following command to Check the Nginx service status:

sudo systemctl status nginx

If the Nginx service has started successfully, we should be able to access the public IP address of our server from the browser and see the default welcome page of Nginx.

Configure Nginx reverse proxy

Now, we have successfully installed Nginx and Node.js. Next, we'll use Nginx's reverse proxy feature to forward external HTTP requests to a specified port number on the Node.js server.

1. Edit Nginx configuration file

Edit Nginx configuration file /etc/nginx/nginx.conf, find the server node in the http segment, and add the following code to it ：

upstream nodejs_backend {
    server    127.0.0.1:3000;  # 这里的端口号需要和我们 Node.js 端口号一致
}

server {
    listen 80 default_server;
    listen [::]:80 default_server;
    server_name _;
    
    location / {
        proxy_pass http://nodejs_backend;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}

Here we use the upstream module of Nginx to define an upstream server named nodejs_backend, which points to 127.0.0.1:3000, which is the port number of the Node.js server we will run later.

Next, we define a virtual host named default_server, which listens on port 80 and forwards HTTP requests to nodejs_backend. Three of the proxy_set_header parameters are used to set some additional information for forwarding requests.

2. Restart the Nginx service

After completing the above steps, we need to restart the Nginx service to make it take effect:

sudo systemctl restart nginx

3. Run Node. js service

Now, we have successfully configured the reverse proxy function of Nginx and are ready to start the service on the Node.js server to receive requests from Nginx.

Create a file called app.js and start a simple http server using the following code:

const http = require('http');
const server = http.createServer((req, res) => {
  res.writeHead(200);
  res.end('Hello, World!');
});
server.listen(3000, () => {
  console.log('Server running on http://127.0.0.1:3000/');
});

Now, we start our Node.js App using the following command:

node app.js

After running successfully, we can access the public IP address of our server from the browser and see our Node.js application output a "Hello, World!" message.

Summary

Congratulations, we have completed the tutorial of deploying Nginx and Node.js simultaneously on a Linux server. By using Nginx's reverse proxy feature to forward HTTP requests, we can write web applications and APIs in Node.js, and use Nginx to handle static files and load balancing, thereby improving the performance and reliability of web applications.

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