npm install pm2 -g

ln -s /home/download/node-v8.11.1-linux-x64/lib/node_modules/pm2/bin/pm2 /usr/local/bin/pm2

"scripts": {
  "test": "echo \"Error: no test specified\" && exit 1",
  "pm2": "/home/download/node-v8.11.1-linux-x64/lib/node_modules/pm2/bin/pm2 start /web/mazey.cn/server/app.js"
}

"scripts": {
  "test": "echo \"Error: no test specified\" && exit 1",
  "pm2": "pm2 start app.js"
}

npm run pm2

pm2 save

pm2 startup centos

PM2 detected systemv but you precised centos
 Please verify that your choice is indeed your init system
 If you arent sure, just run : pm2 startup

vim /etc/nginx/conf.d/*.conf

upstream nodejs {
  server 127.0.0.1:3000;
  keepalive 64;
}
server {
  listen 80;
  server_name domain.cn;
  root /web/mazey.cn;
  index index.html index.htm;
  # 網(wǎng)站切到/server下時(shí)走nodejs
  location /server {
    proxy_set_header  X-Real-IP $remote_addr;
    proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header  Host $http_host;
    proxy_set_header  X-Nginx-Proxy true;
    proxy_set_header  Connection "";
    proxy_pass http://nodejs;
  }
  location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ {
    expires 30d;
  }
  location ~ .*\.(js|css)?$ {
    expires 1h;
  }
}

const express = require('express')
const app = express()
let hi = 'hi'

app.get('/server', (req, res, next) => {
 hi = `Hello Mazey!\n`
 next()
}, (req, res) => {
 res.send(`
 ${hi}
 ${req.method}\n
 ${req.originalUrl}\n
 ${req.query.id}\n
 `)
})

const server = app.listen(3000, function () {
 let host = server.address().address
 let port = server.address().port

 console.log('Example app listening at http://%s:%s', host, port)
})