Git Beyond the Clouds: How Your Code Travels the World Securely part 2

Git, Cloud & Bitbucket – DevOps Journey

🌐 Git, Cloud & Bitbucket: Your Practical Guide to Real-World DevOps

If you're starting your journey into DevOps or cloud computing, you're probably hearing a lot of terms: Git, Bitbucket, cloud VMs, SSH keys, AWS, Google Cloud... it can feel overwhelming. But don’t worry — here’s a friendly guide to help you understand how all these pieces connect and why they matter.

🧠 Why Version Control Systems Like Git Are Essential

Ever lost a file because you forgot to save the backup? Or clashed with a teammate editing the same document?

That’s what Version Control Systems (VCS) are here to solve. They:

  • Track every change in your files.
  • Let multiple people work on the same project.
  • Allow you to roll back to older versions if needed.

🪜 VCS Evolution Made Simple:

  • 1st Gen (Locking systems): Only one person could work on a file at a time.
  • 2nd Gen (Centralized like SVN): You get a working copy, but no local history.
  • 3rd Gen (Distributed like Git): Everyone has a full copy and can work offline!
Git gives you speed, safety, and collaboration — all in one.

🛠️ Must-Know Git Commands

Here’s your cheat sheet for essential Git commands:

Command What It Does
git init Start a new Git project
git add <file> Stage file changes
git commit -m "msg" Save changes with a message
git push origin master Upload code to remote repo
git status Check file changes
git log View commit history
.gitignore Skip files you don’t want tracked

First-time setup:

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

🔄 GitHub vs Bitbucket – Which One to Use?

Both platforms are built on Git. The commands stay the same — only the interface is different.

💼 Companies often prefer Bitbucket over GitHub because it can be installed on their own secure servers. That means more control, more privacy.

☁️ Why Cloud Computing is the Future (And Present)

Gone are the days of maintaining huge physical servers. Today, companies use cloud platforms like:

  • AWS
  • Google Cloud
  • Microsoft Azure

These platforms:

  • Reduce hardware costs.
  • Improve security.
  • Let you launch servers in seconds.
  • Allow teams to focus on development instead of infrastructure setup.

🔑 5 Tech Basics You Must Learn (For Any IT Job)

  1. A Programming Language (e.g., Python, Java)
  2. Operating System (Linux is preferred — used in 99% of servers!)
  3. Networking (IP, DNS, ports)
  4. Databases (MySQL, MongoDB)
  5. Git (Version Control)
Learn these, and you can pick up any new tech with ease.

🆚 AWS vs Google Cloud: Which Free Tier Is Better?

Feature AWS Google Cloud
Free Credits Low ₹20,000 ($300)
RAM 1 GB 6 GB
Disk 30 GB Flexible
Charges May surprise you Transparent billing
👀 Google Cloud offers more RAM and is easier to manage as a beginner.

🛠️ How to Create Your Own Cloud VM (Step-by-Step)

  1. Sign up at Google Cloud → Select Individual account.
  2. Add your card (₹50 deducted temporarily, then refunded).
  3. Go to Compute Engine → VM Instances → Create Instance
  4. Choose:
    • OS: CentOS 7
    • RAM: 3.75 GB
    • Region: Mumbai/Singapore
    • Enable HTTP/HTTPS access

Congrats! You’ve just created your own Linux cloud server 🌐💻

🔐 Secure Server Access with SSH Keys (No Passwords!)

Generate SSH Keys (on your local computer):

mkdir keys_google
cd keys_google
ssh-keygen -f gituser

You’ll get two files:

  • gituser → Your private key (keep it safe!)
  • gituser.pub → Your public key

Upload Public Key to Google Cloud:

  • Go to Compute Engine → Metadata → SSH Keys
  • Click Add item and paste content of gituser.pub

Connect to VM:

ssh -i gituser.pem gituser@<External-IP>

If there's an error about known_hosts, delete the file .ssh/known_hosts from your system.

Once connected, switch to root user:

sudo su -

📢 Extra Tips and Future Plans

  • Stop your VM after practice to avoid charges.
    • ansible
    • Docker
    • Shell scripting
    • AWS
    • Even terraform

🧩 Final Thoughts

Git and Linux are your entry ticket to DevOps and cloud careers.

Whether you're switching to IT or just getting started, learning Git + Cloud + Bitbucket is the smartest move you can make right now.

Start small. Practice regularly. And don’t be afraid to break things — that's how real learning happens 💡

🔒 This content is edited and authored by Kalyan Kalavena. All rights reserved. Any reuse, copy, or adaptation without permission is strictly prohibited under content protection laws.

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