Tested on Ubuntu 14.04 LTS

MongoDB is a NoSQL database intended for storing large amounts of data in document-oriented storage with dynamic schemas. NoSQL refers to a database with a data model other than the tabular format used in relational databases such as MySQL, PostgreSQL and Microsoft SQL. MongoDB features include: full index support, replication, high availability and auto-sharding. To install MongoDB on your system, open a terminal and follow the below steps:

Step 1: Setup a the Package Database

First you have to import the MongoDB public key used by the package management system:

    $ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10

Then you have to create a list file for MongoDB:

    $ echo "deb [ arch=amd64 ] http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.4.list

Now reload the package database:

    $ sudo apt-get update

Step 2: Install Latest Stable Version MongoDB

If there is warning in the command $ sudo apt-get install -y mongodb-org then you need not to worry and do continue to install it.

    $ sudo apt-get install -y mongodb-org
    $ sudo apt-get install -y --force-yes mongodb-org

The image given below is the output of the above commands:

Step 3: Get MongoDB Running

Start-Up MongoDB

    $ sudo service mongod start

Check MongoDB Service Status

    $ sudo service mongod status

Summary List of Status Statistics (Continuous) as shown in the image below.

    $ mongostat
    
![](Image/mongo_stat.png)
    

Summary List of Status Statistics (5 Rows, Summarized Every 2 Seconds)

    $ mongostat --rowcount 5 2

As shown in the below image.

Enter the MongoDB Command Line

    $ mongo

By running this command MongoDB server will start to listen on port 27017 on the localhost interface.

Shutdown MongoDB

    $ sudo service mongod stop

Restart MongoDB

    $ sudo service mongod restart

Step 4: Enable MongoDB Authentication

    $ sudo nano /lib/systemd/system/mongod.service

Add the following lines:

    [Unit]
    Description=High-performance, schema-free document-oriented database
    After=network.target
    Documentation=https://docs.mongodb.org/manual

    [Service]
    User=mongodb
    Group=mongodb
    ExecStart=/usr/bin/mongod --quiet  --auth --config /etc/mongod.conf

    [Install]
    WantedBy=multi-user.target

Use Ctrl+X and Y to save.

Restart the mongod service and login with authentication:

    $ sudo service mongod restart
    $ mongo localhost:27017 -u admin -p admin123 --authenticationDatabase admin

If you get an error as shown in the image given below:

Do the following to get rid of this error:

    $ mongo localhost:27017
    > use admin
    switched to db admin
    > db.auth("admin","admin123");
    1
    > exit;

You can take help from the image given below:

Again, restart the mongo service and login with authentication:

    $ sudo service mongod restart
    $ mongo localhost:27017 -u admin -p admin123 --authenticationDatabase admin

If everything is set right, then you will get the screen as the image given below:

Step 5:

If above error of authentication is not resolved which is shown in the image below .

Then do the following steps:

    $ mongo localhost:27017
    
    > use admin
    > db.createUser(
     {
         user: "admin",
         pwd: "admin123",
         roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]
     }
    )
    > exit; 

Then exit the mongo shell and restart it by using following commands.

    $ sudo service mongod restart

To authenticate after connecting, use the following commands:

    $ mongo localhost:27017
    > use admin
    switched to db admin
    > db.auth("admin","admin123");
    1
    > exit;

This below command will “authenticate during connection”.

    $ mongo localhost:27017 -u admin -p admin123 --authenticationDatabase admin

If everything is set right, then you will get the screen as the image given below:

Step 6:

To check the database

    > show dbs

It will show the below outputs:

admin  0.078GB
local  0.078GB
test   0.078GB
>