Installing MongoDB

Mac Installation :

The easy way to install MongoDB is by using package manager like Homebrew  or MacPorts.

$ sudo brew install mongodb

or 

$ sudo port install mongodb

Setup the data directory

$ sudo mkdir -p /data/db

setup appropriate permissions

$ sudo chown 'id -u' /data/db

Ubuntu Installation :

To authenticate apt-get package, install the public GPG key from MongoDB creators.

$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10

create a file /etc/apt/sources.list.d/10gen.list  and  add the below text

deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen

Install latest stable build of MongoDB

$ sudo apt-get update

$ sudo apt-get install mongodb-10gen

Windows Installation :

Download the latest stable build from https://www.mongodb.com/download-center#community

Make sure appropriate version 64 bit or 32 bit

Install with the installation file.

create the data directory 

mkdir data

mkdir data\db

Running MongoDB

On Mac :

mongod

On Ubuntu :

$ sudo service mongodb start

On Windows :

c:\mongodb\bin\mongod.exe