The easiest way to get started is to install Apache and PHP:
$ sudo apt-get install apache2 php5 php-pear
If you need to edit the Apache ports because you already have another server running on port 80 then edit
You’ll need to install the PHP Mongo connector:
sudo pecl install php_mongo
Add “extension=mongo.so” to the “Dynamic Extensions” section of
/etc/php5/apache2/php.ini and restart Apache with
sudo service apache2 restart.
Download the latest RockMongo and unzip it under /var/www. You should now be able to login with the default username and password of admin/admin.