To install MongoDB on different operating systems, follow the steps for your specific OS. MongoDB provides official packages and instructions for popular platforms.

1. Installing MongoDB on Ubuntu (Linux)

Step 1: Import the MongoDB GPG Key

wget -qO - https://www.mongodb.org/static/pgp/server-6.0.asc | sudo apt-key add -

Step 2: Create MongoDB Source List

echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu $(lsb_release -cs)/mongodb-org/6.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-6.0.list

Step 3: Update Package Database

sudo apt update

Step 4: Install MongoDB

sudo apt install -y mongodb-org

Step 5: Start and Enable MongoDB Service

sudo systemctl start mongod
sudo systemctl enable mongod

Step 6: Verify Installation

mongod --version

Step 7: Connect to MongoDB

mongo

2. Installing MongoDB on CentOS / RHEL (Linux)

Step 1: Create a MongoDB Repo File

bash
cat <<EOF | sudo tee /etc/yum.repos.d/mongodb-org-6.0.repo
[mongodb-org-6.0]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/\$releasever/mongodb-org/6.0/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-6.0.asc
EOF

Step 2: Install MongoDB

sudo yum install -y mongodb-org

Step 3: Start and Enable MongoDB Service

sudo systemctl start mongod
sudo systemctl enable mongod

Step 4: Verify Installation

mongod --version

Step 5: Connect to MongoDB

mongo

3. Installing MongoDB on Windows

Step 1: Download MongoDB Installer

• Go to the MongoDB Download Center.
• Select Windows, choose the correct version (usually the latest), and click Download.

Step 2: Run the Installer

• Double-click the downloaded .msi file to start the installation.
• Select Complete setup to install MongoDB Server, Database Tools, and MongoDB Compass (GUI tool).

Step 3: Configure MongoDB

• Choose the option to Install MongoDB as a Service.
• Select Run MongoDB as a Network Service User or Local User based on your preference.

Step 4: Complete Installation

• After installation, MongoDB will be running as a service. You can manage it through Windows Services or use the command prompt.

Step 5: Verify Installation

• Open Command Prompt and run:

mongod --version

Step 6: Connect to MongoDB

• Open Command Prompt and type:

mongo

4. Installing MongoDB on macOS

Step 1: Install Homebrew (if not installed)

• Open the terminal and run:

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Step 2: Tap MongoDB Formula

brew tap mongodb/brew

Step 3: Install MongoDB

brew install mongodb-community@6.0

Step 4: Start MongoDB Service

brew services start mongodb/brew/mongodb-community

Step 5: Verify Installation

mongod --version

Step 6: Connect to MongoDB

mongo

5. Installing MongoDB on Docker (Cross-Platform)

Step 1: Install Docker

• Install Docker on your system by downloading it from Docker’s website.

Step 2: Pull MongoDB Docker Image

docker pull mongo

Step 3: Run MongoDB Container

docker run -d -p 27017:27017 --name mongodb mongo

Step 4: Verify Container is Running

docker ps

Step 5: Connect to MongoDB

docker exec -it mongodb mongo

Post-Installation Tips

1. MongoDB Compass: For a GUI, MongoDB Compass can be installed (especially useful for Windows and macOS users).
2. MongoDB Configuration File: The configuration file is typically located at /etc/mongod.conf (Linux) or C:\Program Files\MongoDB\Server\<version>\bin\mongod.cfg (Windows) where you can set additional parameters like logging, network interfaces, etc.
3. Security: For production environments, ensure that authentication and role-based access control (RBAC) are configured for MongoDB.