from:  http://tecadmin.net/install-mongodb-on-centos-rhel-and-fedora/

MongoDB (named from “huMONGOus“) is a full flexible index support and rich queries database. Its is a NoSQL database. MongoDB provides large media storage with GridFS. Clickhere for more details about mongoDB.

MongoDB has released new stable version 3.2 with lots of major enhancements. This tutorial will help you to install MongoDB 3.2.X on CentOS, RHEL and Fedora Systems.

Step 1 – Add MongoDB Yum Repository

Add following content in yum repository configuration file /etc/yum.repos.d/mongodb.repo as per your required MongoDB version and system architecture. For this article we are using MongoDB 3.2 repository.

For 64bit Systems:

[MongoDB]

name=MongoDB Repository

baseurl=http://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.2/x86_64/

gpgcheck=0

enabled=1

Step 2 – Install MongoDB Server

Lets use yum package manager to install mongodb-org package, it will automatically install all its dependencies. To install any specific revision of mongodb specify package name with version like mongodb-org-3.2.0. Following command will install latest stable version available.

# yum install mongodb-org

Step 3 – Start MongoDB

Package mongodb-org-server provided MongoDB init script, Use that script to start service.

# /etc/init.d/mongod restart

Configure MongoDB to auto start on system boot.

# chkconfig mongod on

Step 4 – Check MongoDB Version

Use following command to check installed mongodb version

[root@tecadmin ~]#  mongod --version

db version v3.2.0

git version: 45d947729a0315accb6d4f15a6b06be6d9c19fe7

OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 2013

allocator: tcmalloc

modules: none

build environment:

    distmod: rhel70

    distarch: x86_64

    target_arch: x86_64

Connect MongoDB using command line and execute some test commands for checking proper working.

[root@tecadmin ~]#  mongo

> use mydb;

> db.test.save( { a: 1 } )

> db.test.find()

  { "_id" : ObjectId("54fc2a4c71b56443ced99ba2"), "a" : 1 }

Congratulation’s You have successfully installed mongodb server on your system. For practice only you may use MongoDB browser shell.

References:
http://docs.mongodb.org/manual/installation/