linux deploy nodejs

In modern web application development, Node.js has become very popular. Node.js is a JavaScript runtime based on the Chrome V8 engine that can build efficient web applications on the server side. Due to Node.js's good performance, scalability, and excellent ecosystem, more and more development teams choose to use it for development.

However, for newbies, deploying a Node.js application to a Linux server can be a daunting task. In this article, we will cover how to deploy Node.js applications on Linux servers.

1. Installing Node.js

Before you begin, you need to make sure you have Node.js installed on your Linux server. If you haven't installed it yet, please install it according to the following command:

sudo apt-get update
sudo apt-get install nodejs

If you are using a different Linux distribution, you can install it according to the official documentation.

2. Install and use the package manager npm

npm is the package manager that comes with Node.js, which can easily install and manage Node.js software packages. To install npm, use the following command:

sudo apt-get install npm

To install a specific Node.js module, use the following command:

npm install <module_name>

Once installed, you can use require( ) function to load installed modules.

3. Creating a Node.js application

Before deploying a Node.js application, you need to create a basic Node.js application on your local computer. This can be easily done by using the Express framework, which makes building and managing web applications easier.

Create a new application named "myapp" on your local computer using the following command:

npm install express-generator -g
express myapp
cd myapp
npm install

After running this command, you will find a new application named "myapp" in the current folder ” new folder, before proceeding to generate the application, you need to install all necessary dependencies via the following command:

npm install

4. Upload the application to the server

Once you have finished developing your application, you need to upload it to your Linux server. This can be done in one of two ways.

4.1 Local Deployment

Package the code of the application on the local computer and then upload it to the Linux server. You can do this on your local machine using the following command:

tar -zcvf myapp.tar.gz myapp
scp myapp.tar.gz <user>@<server_address>:<remote_directory>

Replace <user> and <server_address> to set it to your Linux The username and address of the server. Replace <remote_directory> with the remote directory where you wish to upload files to your Linux server.

4.2 Deploying directly on the server

The problem is that if you cannot package the application on your local machine, it may be more convenient to deploy the application directly on the server. To achieve this you need to use Git or any other version control system. Configure Git on a Linux server and store your application on GitHub or GitLab. Before running the following command, make sure Git is installed on the Linux server:

sudo apt-get install git

Clone the repository using the following command:

git clone <repository_link>
cd <repository_name>

Before running the application, you need to install all necessary dependencies:

npm install

This will download all necessary packages and modules on the server.

5. Run the application

After deploying the application to the Linux server, you can use the following command to start it:

npm start

The application will Runs as a background service and will listen for connection requests on port 8080 of the Linux server. To access the application, enter http://<server_address>:8080 in your web browser and press Enter to access the application.

Summary

Deploying a Node.js application may be much simpler than you think. In this article, you have learned how to create a Node.js application, upload it to a Linux server, and run it on the server. We hope you can now develop with Node.js with more confidence and be able to deploy applications to Linux servers more easily.

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