📈 Understanding Horizontal and Vertical Scaling

🔹 1. Horizontal Scaling

Horizontal scaling means adding more servers or instances instead of increasing the resources of a single machine.

🔹 2. Vertical Scaling

Vertical scaling means increasing the resources of an existing server.

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⚖️ Load Balancing in AWS

A load balancer distributes incoming traffic among multiple servers.

🌐 1. Application Load Balancer (ALB)

✅ Features

• Distributes web traffic

• Supports microservices architecture

• Content-based routing

🎯 Use Cases

• Web applications

• REST APIs

• Microservices

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🚀 2. Network Load Balancer (NLB)

✅ Features

• High-speed traffic handling

• Low latency

• Supports UDP protocol

🎯 Use Cases

• Gaming applications

• Real-time applications

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🛡️ 3. Gateway Load Balancer (GWLB)

✅ Features

• Traffic inspection

• Secure networking

• Horizontal scaling support

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🔧 Creating an Application Load Balancer

📌 Step 1: Open EC2 Dashboard

📌 Step 2: Create Load Balancer

📌 Step 3: Configure Listener

📌 Step 4: Create Target Group

📌 Step 5: Register Targets

📌 Step 6: Create Load Balancer

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🐙 Git and GitHub Basics

🌍 Public Repository

🔒 Private Repository

🔄 Git Workflow

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📂 Creating a Repository on GitHub

📝 Step 1: Create Repository

⚙️ Step 2: Configure Repository

🚀 Step 3: Create Repository

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💻 Installing Git on Linux

📥 Install Git

sudo apt update
sudo apt install git -y

✔️ Verify Installation

git --version

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🔨 Initialize a Git Repository

git init

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⚙️ Configure Git User Details

git config --global user.name "Your Name"
git config --global user.email "your_email@example.com"

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☁️ Uploading a Project to GitHub

➕ Add Files

📊 Check Status

💾 Commit Changes

🌿 Create Main Branch

🚀 Push Code to GitHub

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📥 Cloning a Repository

git clone <repository-url>

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🎯 Creating a Target Group in AWS

📌 Target Group Configuration

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💽 Checking Disk Space in Linux

df -h

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📦 Listing Block Devices

lsblk

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☁️ Adding Additional Storage in AWS EC2

📌 Step 1: Create Volume

📌 Step 2: Select Availability Zone

📌 Step 3: Attach Volume

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🛠️ Formatting the New Volume

mkfs.ext4 /dev/nvme1n1

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📁 Creating a Mount Directory

mkdir /mnt/diskdata

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🔗 Mounting the Volume

mount /dev/nvme1n1 /mnt/diskdata

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🔹 Unmounting a Volume in Linux

Unmounting removes the mounted filesystem from the directory structure without deleting data.

Why Unmount?

• Safely detach storage devices

• Prevent data corruption

• Required before removing AWS EBS volumes

Check Mounted Volumes

df -h

Unmount the Volume

umount /dev/nvme1n1

Verify Unmount

df -h

The mounted directory should no longer appear in the output.

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🎯 Conclusion

Linux administration and DevOps concepts such as scaling, load balancing, Git version control, AWS target groups, and storage management are fundamental skills for cloud engineers and DevOps professionals.

By understanding these concepts and practicing the commands covered in this article, you can build a strong foundation in Linux, AWS, and modern infrastructure management.🎯 Conclusion

Linux, AWS, Git, and storage management are essential skills for every DevOps engineer. By understanding scaling strategies, load balancing, version control, and storage administration, you build a strong foundation for managing modern cloud infrastructure efficiently.

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