Setting up Authentication and Authorization for MongoDB on AWS EC2

In this tutorial, we will cover the steps to set up authentication and authorization for MongoDB on Amazon Web Services (AWS) EC2. We will use MongoDB Community Edition, which is a free and open-source database system.

Prerequisites:

• An AWS account
• An EC2 instance running the MongoDB Community Edition
• An SSH client, such as PuTTY or Terminal (for Mac/Linux)
• Basic knowledge of MongoDB

Step 1: Connecting to the EC2 Instance

Use your SSH client to connect to the EC2 instance using the public IP address and the private key and install MongoDB using the following commands:

sudo yum update -y
sudo vi /etc/yum.repos.d/mongodb-org-4.4.repo

Add the following lines to the repo file:

[mongodb-org-4.4]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/amazon/2/mongodb-org/4.4/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-4.4.asc

Save and exit the file, then run mongo​ to enter the MongoDB Shell.Then type use admin​to switch to the admin database. Create an administrative user with the following command:

db.createUser({user: "[username]", pwd: "[password]", roles: [{role: "root", db: "admin"}]})

Finally, exit the shell by typing exit​

Step 3: Enabling Authentication and Authorization

Edit the MongoDB configuration file by running the following command:

sudo vi /etc/mongod.conf

Add the following lines to the file:

security:
    	​authorization: enabled

Save and exit the file, then restart the MongoDB service by running the following command:

sudo service mongod restart

Step 4: Testing the Authentication and Authorization

Connect to the MongoDB shell by running the following command:

mongo --username [username] --password [password] --authenticationDatabase admin

Switch to a non-admin database by running use [database name]​

Create a new user with restricted privileges by running the following command:

db.createUser({user: "[username]", pwd: "[password]", roles: [{role: "readWrite", db: "[database name]"}]})

Exit the MongoDB shell by typing exit​

Step 5: Updating the Application Connection String

Modify the connection string in the application to include the username and password:

mongodb://[username]:[password]@[EC2 public IP]:27017/[database name]

Test the application to ensure that authentication and authorization are working correctly.

In this tutorial, we have covered the steps to set up authentication and authorization for MongoDB on AWS EC2. By enabling authentication and authorization, you can secure your MongoDB database and protect it from unauthorized access.

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