编程

PM2 can be used programmatically, meaning that you can embed a process manager directly in your code, spawn processes, keep them alive even if the main script is exited.

Check out this article for more informations.

简单实例

This will require pm2, launch test.js, list processes then exit the script. You will notice that after exiting this script you will be able to see test.js process with pm2 list

$ npm install pm2 --save

var pm2 = require('pm2');

// Connect or launch PM2
pm2.connect(function(err) {

  // Start a script on the current folder
  pm2.start('test.js', { name: 'test' }, function(err, proc) {
    if (err) throw new Error('err');

    // Get all processes running
    pm2.list(function(err, process_list) {
      console.log(process_list);

      // Disconnect to PM2
      pm2.disconnect(function() { process.exit(0) });
    });
  });
})

编程API

Consideration with .connect: the .connect method connect to the local PM2, but if PM2 is not up, it will launch it and will put in in background as you launched it via CLI.