DevOps Sessions - Week 2 - Git & GitHub

Welcome to Week 2 of our “Becoming a DevOps Engineer” series! This week, we will focus on Git and GitHub, two essential tools for version control and collaboration in software development. Mastering these tools is crucial for any DevOps engineer, as they enable efficient code management and seamless teamwork. Let’s dive in!

Session Overview

1. Introduction to Version Control

• What is Version Control?
• Importance of Version Control in DevOps

2. Understanding Git

• What is Git?
• Core Concepts of Git

3. Basic Git Commands

• Setting Up Git
• Essential Git Commands

4. Introduction to GitHub

• What is GitHub?
• GitHub Features and Benefits

5. Working with GitHub

• Creating a Repository
• Cloning, Pushing, and Pulling

6. Collaboration with GitHub

• Branching and Merging
• Pull Requests and Code Reviews

1. Introduction to Version Control

What is Version Control?

Version control is a system that records changes to a file or set of files over time so that you can recall specific versions later. It helps track history, revert to previous states, and manage code changes efficiently.

Importance of Version Control in DevOps

In DevOps, version control is essential for:

• Collaboration: Multiple developers can work on the same project simultaneously.
• Backup: Every change is recorded, providing a safety net.
• Continuous Integration: Automated testing and integration are streamlined.

2. Understanding Git

What is Git?

Git is a distributed version control system designed to handle everything from small to very large projects with speed and efficiency. It allows developers to work on multiple branches and merge code seamlessly.

Core Concepts of Git

• Repository (Repo): A storage space where your project lives.
• Commit: A snapshot of your repository at a specific point in time.
• Branch: A parallel version of your repository.
• Merge: Combining changes from different branches.

3. Basic Git Commands

Setting Up Git

1. Install Git: Download and install Git from git-scm.com.
2. Configure Git:

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

Essential Git Commands

• git init: Initialize a new Git repository.
• git clone <repo-url>: Clone an existing repository.
• git add <file>: Stage changes for the next commit.
• git commit -m "message": Commit staged changes with a message.
• git status: Show the status of changes.
• git log: View commit history.

4. Introduction to GitHub

What is GitHub?

GitHub is a web-based platform that uses Git for version control and provides additional features for collaborative development. It allows developers to share repositories, track issues, and review code.

GitHub Features and Benefits

• Repositories: Store and manage code projects.
• Forking: Create a personal copy of someone else’s project.
• Pull Requests: Propose changes to a project.
• Issues: Track bugs and feature requests.
• Actions: Automate workflows with CI/CD.

5. Working with GitHub

Creating a Repository

1. On GitHub: Go to GitHub and click “New Repository”.
2. Clone the Repository:

   git clone https://github.com/yourusername/your-repo.git

Cloning, Pushing, and Pulling

• Clone a Repo:

  git clone <repo-url>

• Push Changes:

  git add .
  git commit -m "Initial commit"
  git push origin main

• Pull Changes:

  git pull origin main

6. Collaboration with GitHub

Branching and Merging

• Create a Branch:

  git checkout -b feature-branch

• Merge a Branch:

  git checkout main
  git merge feature-branch

Pull Requests and Code Reviews

1. Create a Pull Request: Go to GitHub and click “New Pull Request”.
2. Review and Merge: Team members review the code and provide feedback before merging.

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By mastering Git and GitHub, you are equipped to manage code changes and collaborate effectively with your team. Stay tuned for next week’s session, where we will explore more advanced topics and tools in the DevOps toolkit. Happy coding!