How to install MongoDB on RHEL 6

How to install MongoDB on RHEL 6:-

Os version _ Rhel 6.4
MongoDB Version:-2.6.7

Step:1 System Login as root user. We are checking system OS type and system bits type.

# uname –a
Linux server1.soumya.com 2.6.32-358.el6.x86_64 #1 SMP Tue Jan 29 11:47:41 EST 2013 x86_64 x86_64 x86_64 GNU/Linux

# cat /etc/issue
Red Hat Enterprise Linux Server release 6.4 (Santiago)
Kernel \r on an \m


Step:2 Now we are creating a yum repo file .like /etc/yum.repos.d/mongodb.repo

# 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

--save & exit(:wq)

Step:3 Now we install mongodb client and server using yum

# yum install mongo-*

If you face any error while installing the rpms do the following
# yum erase mongo*
yum shell
> install mongodb-org
> remove mongo-10gen
> remove mongo-10gen-server
> run

Step:4 Now we can configure and basic setting in Mongodb Database Server

# vi /etc/mongod.conf
logappend=true
logpath=logpath=/var/log/mongodb/mongod.log
port=27017
dbpath=/var/lib/mongo
smallfiles = true
:wq

Step:5 Start Mongodb Server

# /etc/init.d/mongod start
# chkconfig mongod on

Open another terminal and type
#mongo


Show all database:-
>show dbs

Define a database name as soumya:-
>use soumya

then to check your current db name:-
>db

To add the created db in dblist we need to add collection in this database.For instance, create a document in a customers collection like this:
db.customers.save({"firstName":"Alvin", "lastName":"Alexander"})

Next, verify that your document was created with this command:
db.customers.find()

Now check your db name:-
>show dbs

Now to add a new user in a db:-
>use pizza
>db.createUser( { user: "soumya",
              pwd: "redhat2",
              roles: [ "readWrite", "dbAdmin" ]
            } )

To check all the users in your current db:-
>show users
or
db.system.users.find()

To drop the database pizzas:-
use pizzas;
>db.dropDatabase()

To check current version:-
db.version()

Done..



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