CentOS 7

How to Install PM2 on CentOS 7

To install PM2 on CentOS 7, follow these steps:

Step 1 : Install PM2 using npm.

npm install pm2 -g

Step 2 : Set PM2 to start at system boot.

pm2 startup systemd

Step 3 : Create a basic Node.js application if you haven't already. Here's a simple example (app.js):

const http = require('http');
const port = 3000;

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello, World!\n');
});

server.listen(port, () => {
  console.log("Server running at http://localhost:${port}/");
});

Step 4 : Start your app with PM2.

pm2 start app.js --name my-app

Replace app.js with your application file and my-app with your desired process name.

Step 5 : Manage your app with PM2.

- Check status

# Check status of all applications managed by PM2
pm2 status

# Check status of a specific application
pm2 status my-app

- Restart app

pm2 restart my-app

- Reload app (useful for zero downtime reload)

pm2 reload my-app

- Stop app

pm2 stop my-app

- Delete app from PM2 process list

pm2 delete my-app

Congratulations! You have successfully installed PM2 on CentOS 7.