Installing on .deb systems

If you are running a .deb based system, first you need to add the repository for mongodb so that you can get latest packages and timely updates.

Create a file with below content.

# vim  /etc/apt/sources.list.d/mongodb.list
 'deb http://downloads-distro.mongodb.org/repo/debian-sysvinit dist 10gen'

You have to update local database, with the help of below

#  apt-get update

Install the latest mongo-db package

[root@mongo1 ~]#  apt-get install mongodb-org

Now, we have to start MongoDB, run:

# service mongodb restart

How to use Mongodb

We will now create databases and users on MongoDB. Get connected with mongo shell with the help of mongo utility.

# mongo --host 127.0.0.1 --port 27017

You should see this in shell if everything is installed correctly:

MongoDB shell version: 2.6.4
connecting to: 127.0.0.1:27017/test

In order to see databases on mongodb run this command in mongodb shell (by default you will connect with test database):

> show dbs;

admin  (empty)
local  0.078GB
example   0.078GB
test   0.078GB

Now we are going to create a database for our need. The command to create a new database is ‘use DATA_BASE_NAME’. Here we are creating a database called ‘themukt’.

> use themukt;
switched to db themukt

Now we will create a new user, password and connect it to the appropriate database using user function. It will create a user with readwrite(privileges) on themukt database with password.

> db.createUser({"user":"new_user_name","pwd":"new_user_password","roles": [{ role: "readWrite", db: "themukt" }]})

Successfully added user: {
 "user" : "admin1",
 "roles" : [
  {
   "role" : "readWrite",
   "db" : "themukt"
  }
 ]
}

We need to create collection (known as tables on other databases) for this database.

> db.mukttable.insert({'S_No' : "1", "Name" : "USER_NAME"});
WriteResult({ "nInserted" : 1 })

See the o/p of above command Inserted: 1, it means you have inserted one document in collection.

With the help of find function, you can see the content of collection:

> db.mukttable.find();
{ "_id" : ObjectId("54074551632f07d8ab898c5f"), "S_No" : "1", "Name" : "USER_NAME" }

> exit;