Reverse proxy Node.js with Nginx

install pm2

npm install pm2 -g

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

Modify package.json

"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"
}

or

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

start pm2

npm run pm2

start pm2

pm2 save

pm2 startup centos

Notice

If pm2 startup centosit fails, try it pm2 startup.

 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

Modify Nginx configuration

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;
    # 网站切到/server下时走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;
    }
}

Correspondingly app.js:

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)
})

Notice

If an error is reported, Cannot GET /xxxthe Express routing is not configured properly.