PM2 Node.js Process Management

About

You can use PM2 to manage Node.js apps:

Advanced, production process manager for Node.js
http://pm2.keymetrics.io/

Note: PM2 is connected to user; on multi-user boxes, PM2 can be run as root; if you login to the server under your own username (e.g., production server), and you want to PM2 manage Node apps on that server, run sudo -i before running any of the pm2 commands below.

PM2/Server commands

# To start a node process using PM2, navigate to the app's server.js (or whatever file is the main server JS file):
$ cd <this repo>/server/server.js
# … and run:
$ pm2 start server.js --name site.com --watch

# Restart a node process by name:
$ pm2 restart site.com
# Restart process by id, and rename it:
$ pm2 restart 3 --name new-name --watch

# To save your list of running apps so they start when server gets restarted:
$ pm2 save

# Make sure pm2 starts on server boot using “init system” for server (this example is CentOS):
$ pm2 startup systemd

# If --watch is enabled, stopping it won’t stop watching! You must do:
$ pm2 stop site.com --watch 0

# If you have saved your list of PM2 processes in the past, and they are not listed, you can re-initialize them:
$ pm2 resurrect

# To view running apps (should be root user, but may be others):
$ pm2 list

# See details of a process (0 = <process-name|process-id>):
$ pm2 show 0

# Remove app from PM2:
$ pm2 delete site.com

# To view all app/process logs:
$ pm2 log --lines 500
# Or, view a specific app/process via process-name:
$ pm2 logs site.com --lines 500

# More information about a specific application:
$ pm2 info site.com

# Display the application status, CPU, and memory usage:
$ pm2 monit