This article describes how to deploy Node.js on a CVM and create a sample project.
To do this, you need to be familiar with common Linux commands such as Installing Software via YUM in a CentOS Environment and understand the versions of the installed software.
Setting up Node.js involves:
To set up Node.js, you need a Linux CVM. If you have not purchased one yet, see Getting Started with Linux CVMs.
Log in to a Linux instance using WebShell (recommended). You can also use other login methods that you are comfortable with:
wget https://nodejs.org/dist/v10.16.3/node-v10.16.3-linux-x64.tar.xz
Visit the Node.js official website for more information.
Run the following command to decompress the install package.
tar xvf node-v10.16.3-linux-x64.tar.xz
Run the following commands to create symbolic links.
ln -s /root/node-v10.16.3-linux-x64/bin/node /usr/local/bin/node
ln -s /root/node-v10.16.3-linux-x64/bin/npm /usr/local/bin/npm
Once created, you are able to use node and npm commands in any CVM directory.
4. Run the following commands to view Node.js and npm versions.
node -v
npm -v
This process allows you to install multiple Node.js versions. Developers can use this to quickly switch among versions.
Run the following command to install git.
yum install -y git
Run the following command to download the NVM source code and check for the newest version.
git clone https://github.com/cnpm/nvm.git ~/.nvm && cd ~/.nvm && git checkout `git describe --abbrev=0 --tags`
Run the following to configure NVM environment variables.
echo ". ~/.nvm/nvm.sh" >> /etc/profile
Run the following command to read system environment variables.
source /etc/profile
Run the following commands to view all Node.js versions.
nvm list-remote
Run the following commands to install multiple Node.js versions.
nvm install v6.9.5
nvm install v10.16.3
nvm ls
If the following appears, then the installation is successful and the current version in use is Node.js 10.16.3.
8. Run the following command switch to another version.
nvm use v6.9.5
The following appears:
index.js
under the root path.cd ~
vim index.js
index.js
file:const http = require('http');
const hostname = '0.0.0.0';
const port = 7500;
const server = http.createServer((req, res) => {
if (res.statusCode === 200) {
res.setHeader('Content-Type', 'text/plain');
res.end('Hello World\n');
});
server.listen(port, hostname, () => {
console.log(`Server running at http://${hostname}:${port}/`);
});
This article uses port 7500 in the
index.js
file. You can use other ports as needed.
Press Esc and input :wq to save the file and go back.
Run the following command to execute the Node.js project we just created.
node index.js
Open a browser window on your local machine and visit the following URL to check if the project has been executed successfully.
http://CVM_Public_IP:Port
If the following appears, Node.js is installed successfully.
If you encounter a problem when using CVM, refer to the following documents for troubleshooting based on your actual situation.
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