A comprehensive collection of practical guides and tutorials to master essential DevOps tools through hands-on learning.

• Overview
• Docker
• Jenkins
• GitLab CI/CD
• Getting Started
• Contributing
• Connect

This repository provides step-by-step documentation for learning and implementing popular DevOps tools. Each section includes practical examples, real-world projects, and troubleshooting guides.

• Installation & Setup
  • Update Ubuntu package index
  • Install Docker Engine
  • Verify Docker installation

• Pull images from Docker Hub
• Run MySQL containers
• Deploy Nginx containers

• ☕ Java Application - Containerize Java applications
• 🟢 Node.js Application - Build and deploy Node.js apps
• 🐍 Python Flask - Flask application containerization
• 🏗️ Two-Tier Architecture - Multi-container application setup

• Docker Compose - Multi-container orchestration
• Multi-Stage Builds - Optimize image size and security
• Docker Scout - Security scanning and vulnerability detection

1. Installation

   • Update system packages
   • Install Jenkins LTS (Long Term Support)
   • Access Jenkins UI (default port: 8080)
   • Retrieve initial admin password

2. Initial Configuration

   • Complete setup wizard
   • Install recommended plugins
   • Create admin user

• Creating Pipelines
  • General configuration
  • Build triggers setup
  • Pipeline syntax and structure
  • Success/failure handling

• Generate SSH keys
• Install Java on agent nodes
• Register and configure agents
• Monitor agent status
• Troubleshoot offline agents

• Credential Management

  • Credential binding
  • Docker Hub integration
  • Personal Access Token (PAT) setup

• Docker Integration

  • Build Docker images
  • Push to Docker Hub
  • Docker Compose pipelines

• Automation

  • GitHub webhooks
  • Automated builds on commit
  • Jenkinsfile from SCM

• Common pipeline failures and solutions
• Build verification techniques
• Debug strategies

1. Getting Started

   • Create GitLab account
   • Set up groups and projects
   • Understand project structure

2. Pipeline Basics

   • Demo pipeline creation
   • Parallel job execution
   • Pipeline visualization

• Predefined Variables

  • Built-in CI/CD variables
  • Variable reference guide

• Custom Variables

  • Project-level variables
  • Group-level variables
  • Docker Hub PAT integration

• Installation & Setup

  # Install GitLab Runner
  # Check runner status
  # Verify service status

• Registration
  • Register runners with GitLab
  • Configure executor types
  • Tag management

• Import Projects
  • Generate SSH keys on EC2
  • Add public keys to GitLab
  • Import from external repositories

• Best Practices

  • Pipeline configuration tips
  • Job dependencies
  • Stage management

• Job Types

  • Build jobs
  • Push jobs
  • Deploy jobs

• Artifact generation
• Artifact storage and retrieval
• Pipeline configuration with artifacts

• Ubuntu/Linux system (recommended)
• Basic command-line knowledge
• Git installed
• Internet connection

1. Clone this repository

git clone https://github.com/dheeruyadav54/HandOn-DevOpsTools-Document.git

2. Navigate to the tool you want to learn

cd HandOn-DevOpsTools-Document

3. Follow the step-by-step guides in each folder

Contributions are welcome! If you have improvements or additional guides:

1. Fork the repository
2. Create a feature branch (git checkout -b feature/new-guide)
3. Commit your changes (git commit -m 'Add new guide')
4. Push to the branch (git push origin feature/new-guide)
5. Open a Pull Request

Dheeraj Yadav

This project is open source and available for educational purposes.