MongoDB Installation and Configuration Guide

Prerequisites

Ensure you have the following installed:

• A Linux-based operating system (Ubuntu/Debian)
• sudo privileges on your machine

Installation

1. Update System Packages

sudo apt update
sudo apt upgrade -y

2. Install MongoDB

Add the MongoDB APT repository and install MongoDB:

sudo apt install -y gnupg curl
curl -fsSL https://www.mongodb.org/static/pgp/server-7.0.asc | \
sudo gpg -o /usr/share/keyrings/mongodb-server-7.0.gpg \
   --dearmor
echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-7.0.gpg ] https://repo.mongodb.org/apt/ubuntu jammy/mongodb-org/7.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-7.0.list
sudo apt update
sudo apt install -y mongodb-org

3. Start MongoDB Service

Start the MongoDB service and enable it to start on boot:

sudo systemctl start mongod
sudo systemctl enable mongod

Configuration

1. Edit MongoDB Configuration File

Open the MongoDB configuration file using nano:

sudo nano /etc/mongod.conf

Add or modify the following configuration settings:

# Where and how to store data.
storage:
  dbPath: /var/lib/mongodb

# Where to write logging data.
systemLog:
  destination: file
  logAppend: true
  path: /var/log/mongodb/mongod.log

# Network interfaces
net:
  bindIp: 0.0.0.0
  port: 27017

# How the process runs
processManagement:
  timeZoneInfo: /usr/share/zoneinfo

security:
  authorization: "enabled"

Save and close the file (Ctrl + X, then Y, then Enter).

2. Set Permissions

Ensure that MongoDB has the proper permissions to access its directories:

sudo chown -R mongodb:mongodb /var/lib/mongodb
sudo chown -R mongodb:mongodb /var/log/mongodb

3. Restart MongoDB Service

Apply the configuration changes by restarting MongoDB:

sudo systemctl restart mongod

Creating a User

1. Connect to MongoDB

Open the MongoDB shell (mongosh):

mongosh

2. Create the Root User

Switch to the admin database and create a user with root privileges:

use admin
db.createUser({
  user: "root",
  pwd: "root",
  roles: [
    { role: "root", db: "admin" },
    { role: "clusterMonitor", db: "admin" },
    { role: "dbAdminAnyDatabase", db: "admin" },
    { role: "readWriteAnyDatabase", db: "admin" },
    { role: "userAdminAnyDatabase", db: "admin" }
  ]
})

3. Authenticate as the New User

Authenticate with the new user:

db.auth("root", "root")

4. Verify User Creation

Check the created users:

db.getUsers()
db.getUser("root")

Checking MongoDB Status

Verify that MongoDB is running correctly:

sudo systemctl status mongod

Troubleshooting

• MongoDB Not Starting: Check logs in /var/log/mongodb/mongod.log for errors.
• Authentication Issues: Ensure the user credentials are correct and that you are connecting to the correct database.

Conclusion

MongoDB is now installed, configured, and secured with user authentication. You can now start using MongoDB for your applications.

Refereance

https://www.mongodb.com/docs/manual/tutorial/install-mongodb-on-ubuntu/