How to Install MongoDB on CentOS 6 x86_64

Step #1: Add the MongoDB Repository
vi /etc/yum.repos.d/mongodb.repo
[mongodb]
name=MongoDB Repository
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64/
gpgcheck=0
enabled=1

Then exit and save the file with the command :wq

Step #2: Install MongoDB
yum install mongo-10gen mongo-10gen-server


Dependencies Resolved
=======================================================================
 Package                   Arch          Version           Repository      Size
=======================================================================
Installing:
 mongodb-org               x86_64        2.6.5-1           mongodb        4.6 k
 mongodb-org-server        x86_64        2.6.5-1           mongodb        9.0 M
Installing for dependencies:
 mongodb-org-mongos        x86_64        2.6.5-1           mongodb        6.8 M
 mongodb-org-shell         x86_64        2.6.5-1           mongodb        4.3 M
 mongodb-org-tools         x86_64        2.6.5-1           mongodb         89 M

Transaction Summary
=======================================================================
Install       5 Package(s)

Total download size: 109 M
Installed size: 276 M
Is this ok [y/N]: y

MongoDb configuration file path:
/etc/mongod.conf

Step #3: Get MongoDB Running
service mongod start


Check MongoDB Service Status
service mongod status

Summary List of Status Statistics
mongostat

Enter the MongoDB Command Line
mongo


By default, running this command will look for a MongoDB server listening on port 27017 on the localhost
interface.

If you’d like to connect to a MongoDB server running on a different port, then use the –port option. For example,

if you wanted to connect to a local MongoDB server listening on port 22222, then you’d issue the following
command:

mongo --port 22222

To Shutdown MongoDB:
service mongod stop


MondoDB Usage:

>mongo

Select a Database
>db

list of databases:
>show dbs

create a new database with name mydb:
>use mydb

confirm the db is created:
>db

Your created database (mydb) is not present in list. To display database you need to insert atleast one document into it.

> db.movie.insert({"name":"linux space station"})

> show dbs

To delete database:
>use test
>db.dropDatabase()

This will delete the selected database. If you have not selected any database, then it will delete default 'test'
database

>show dbs