[Nginx] Nginx做NodeJS应用负载均衡配置实例

upstream sample { 

   server 127.0.0.1:3000; 

   server 127.0.0.1:3001; 

   keepalive 64; 

  } 

   server { 

    listen 80; 

    .... 

    server_name 127.0.0.1; 

    .... 

    location / { 

    proxy_redirect off; 

    proxy_set_header X-Real-IP $remote_addr; 

    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  

    proxy_set_header X-Forwarded-Proto $scheme; 

    proxy_set_header Host $http_host; 

    proxy_set_header X-NginX-Proxy true; 

    proxy_set_header Connection ""; 

    proxy_http_version 1.1; 

    proxy_pass http://sample; 

    } 

  }

var http = require('http'); 

var morgan  = require('morgan'); 

  

var server1 = http.createServer(function (req, res) { 

 console.log("Request for: " + req.url + "-- port 3000 ");  

 res.writeHead(200, {'Content-Type': 'text/plain'}); 

 res.end('Hello Node.js\n'); 

}).listen(3000, "127.0.0.1"); 

  

var server2 = http.createServer(function (req, res) { 

 console.log("Request for: " + req.url + "-- port 3001 ");  

 res.writeHead(200, {'Content-Type': 'text/plain'}); 

 res.end('Hello Node.js\n'); 

}).listen(3001, "127.0.0.1"); 

  

server1.once('listening', function() { 

 console.log('Server running at http://127.0.0.1:3000/'); 

}); 

  

server2.once('listening', function() { 

 console.log('Server running at http://127.0.0.1:3001/'); 

});

Server running at http://127.0.0.1:3000/  

Server running at http://127.0.0.1:3001/  

Request for: /-- port 3001  

Request for: /favicon.ico-- port 3000  

Request for: /favicon.ico-- port 3001  

Request for: /-- port 3000  

Request for: /favicon.ico-- port 3001  

Request for: /favicon.ico-- port 3000  

Request for: /-- port 3001  

Request for: /favicon.ico-- port 3000  

Request for: /favicon.ico-- port 3001  

Request for: /-- port 3000  

Request for: /favicon.ico-- port 3001  

Request for: /favicon.ico-- port 3000