PM2 is a production process manager for Node.js applications with a built-in load balancer. It allows you to keep applications alive forever, to reload them without downtime and to facilitate common system admin tasks.
Installation
Install PM2 globally using npm:
npm install pm2 -gBasic Commands
Starting an Application
To start an application:
pm2 start api.jsYou can also start an application from an npm script:
# Example: pm2 start "npm run start"To start an application with arguments
pm2 start api.js -- arg1 arg2Managing Processes
-
List all running processes:
pm2 list -
Display detailed information about a specific process:
pm2 show <app_name> -
Stop a specific process:
pm2 stop <app_name> -
Restart a specific process:
pm2 restart <app_name> -
Delete a process from PM2’s list:
pm2 delete <app_name>
Log Management
Display logs for a specific application:
pm2 logs <app_name>Startup Script
Generate a startup script to automatically restart PM2 and your processes on server reboot:
pm2 startupAfter running startup, you need to save the current process list:
pm2 save