1、安装nodejs
2、安装pm2
npm install -g pm2
3、测试helloworld
编写helloworld.js
var http = require(‘http‘);
http.createServer(function (req, res) {
res.writeHead(200, { ‘Content-Type‘: ‘text/plain‘ }); res.end(‘Hello World\n‘);
}).listen(1337, "127.0.0.1");
console.log(‘Server running at http://127.0.0.1:1337/‘);
pm2启动

pm2的选项命令查看帮助
pm2 --help