Install Node.js and PM2

Updated on: 5.Dec.2020

Node.js

Node.js is a virtual machine to host JavaScript program. It is powerful such that you can write a simple website in a few lines of code.

• To install Node.js
  

   cd ~

 

   # download the setup script - you may review it before executing this script

   curl -sL https://deb.nodesource.com/setup_14.x -o nodesource_setup.sh

 

   sudo bash nodesource_setup.sh

   sudo apt install nodejs

   sudo apt install build-essential

• To check version,

   node -v 

   npm -v

• To remove Node.js

   sudo apt-get purge --auto-remove nodejs

PM2

The website that was developed in Node.js will be shut down upon server reboot. In this case, we need a program to start it and monitor the process. There are many options to achieve this. But, we choose PM2 due to it's flexibility and able to run on Windows platform.

• To install PM2

   sudo npm install pm2@latest -g

• To install log rotate

   sudo pm2 install pm2-logrotate

• Set as startup (in Linux) - run the following command in a NON root context,

   sudo pm2 startup systemd

• The log files will be kept in the following directory

   pm2 home directory: /home/<username>/.pm2