Install Node.js with dependacies

sudo apt-get install -y python-software-properties python g++ make
sudo add-apt-repository ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get install nodejs

Apache and Node.js on the same Ubuntu server

Install Node.js

apt-get install nodejs

apt-get install npm

 apt-get install build-essential

Install express node module

npm install express

Edit Apache

sudo a2enmod proxy

sudo a2enmod proxy_http

edit the  default apache conf

ProxyRequests Off

<Proxy *>

 Order deny,allow

 Allow from all

 </Proxy>

 <Location /node>

 ProxyPass  http://server-name:5000

 ProxyPassReverse  http://server-name:5000

 </Location>

Now restart the apache 

service apache2 restart

The first app

created two files: web.js and package.json

web.js:

varexpress = require("express");

varapp = express();

app.use(express.logger());

app.get('/', function(request, response) {

    response.send('Hello World!');

});

app.get('/test', function(request, response) {

    response.send('This was only a test');

});

app.use(function(err, req, res, next){

  console.error(err.stack);

  res.send(500, 'Something broke!');

});

varport = process.env.PORT || 8080;

app.listen(port, function() {

    console.log("Listening on "+ port);

});

package.json:

{

  "name": "node-example",

  "version": "0.0.1",

  "dependencies": {

    "express": "3.1.x"

  },

  "engines": {

    "node": "0.10.x",

    "npm": "1.2.x"

  }

}

Start the app

    node web.js