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euhansarkar/mongodb.sh

Created May 4, 2025 22:42
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  1. euhansarkar created this gist May 4, 2025.
    88 changes: 88 additions & 0 deletions mongodb.sh
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    #!/bin/bash

    set -e

    GREEN='\033[0;32m'
    NC='\033[0m'

    # Check for Ubuntu version
    echo -e "${GREEN}Checking Ubuntu version...${NC}"
    UBUNTU_CODENAME=$(lsb_release -cs)

    # Supported versions: noble, jammy, focal
    if [[ ! " noble jammy focal " =~ " $UBUNTU_CODENAME " ]]; then
    echo "Error: Unsupported Ubuntu version ($UBUNTU_CODENAME). Supported: noble, jammy, focal"
    exit 1
    fi

    # Step 1: Remove conflicting packages
    echo -e "${GREEN}Removing conflicting mongodb packages...${NC}"
    sudo apt-get remove -y mongodb mongodb-clients || echo "No conflicting packages found"

    # Step 2: Install dependencies
    echo -e "${GREEN}Installing dependencies...${NC}"
    sudo apt-get update -y
    sudo apt-get install -y wget gnupg curl

    # Step 3: Import MongoDB GPG key
    echo -e "${GREEN}Importing MongoDB GPG key...${NC}"
    curl -fsSL https://www.mongodb.org/static/pgp/server-8.0.asc | \
    sudo gpg -o /usr/share/keyrings/mongodb-server-8.0.gpg \
    --dearmor

    # Step 4: Add MongoDB repository
    echo -e "${GREEN}Adding MongoDB repository...${NC}"
    echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-8.0.gpg ] https://repo.mongodb.org/apt/ubuntu $UBUNTU_CODENAME/mongodb-org/8.0 multiverse" | \
    sudo tee /etc/apt/sources.list.d/mongodb-org-8.0.list

    # Step 5: Install MongoDB
    echo -e "${GREEN}Installing MongoDB 8.0...${NC}"
    sudo apt-get update -y
    sudo apt-get install -y mongodb-org

    # Step 6: Start and enable MongoDB service
    echo -e "${GREEN}Starting and enabling MongoDB service...${NC}"
    sudo systemctl start mongod
    sudo systemctl enable mongod

    # Wait for MongoDB to initialize
    sleep 10

    # Step 7: Create admin user
    echo -e "${GREEN}Creating admin user...${NC}"
    mongo admin --eval "db.createUser({user: 'admin', pwd: 'adminpassword', roles: [{role: 'userAdminAnyDatabase', db: 'admin'}, {role: 'readWriteAnyDatabase', db: 'admin'}]})"

    # Step 8: Enable authorization and bindIp in config
    echo -e "${GREEN}Updating MongoDB configuration...${NC}"
    sudo tee -a /etc/mongod.conf > /dev/null <<EOL
    security:
    authorization: enabled
    # Ensure bindIp includes localhost
    net:
    bindIp: 127.0.0.1
    EOL

    # Step 9: Restart MongoDB to apply changes
    echo -e "${GREEN}Restarting MongoDB to apply configuration...${NC}"
    sudo systemctl restart mongod

    # Wait for MongoDB to restart
    sleep 10

    # Step 10: Create application user
    APP_DB="mydatabase"
    APP_USER="myuser"
    APP_PASS="mypassword"

    echo -e "${GREEN}Creating application user in '$APP_DB'...${NC}"
    mongosh "$APP_DB" -u admin -p adminpassword --authenticationDatabase admin --eval "db.createUser({user: '$APP_USER', pwd: '$APP_PASS', roles: [{role: 'readWrite', db: '$APP_DB'}]})"

    # Output connection string
    echo -e "${GREEN}MongoDB setup completed successfully!${NC}"
    echo ""
    echo "✅ Connection String:"
    echo "mongodb://$APP_USER:$APP_PASS@localhost:27017/$APP_DB?authSource=admin"
    echo ""
    echo "💡 To connect via mongosh or drivers, use the above string."