Jenkins-Hands-on

Jenkins is like a robot assistant for developers. It helps automate repetitive tasks in the process of building, testing, and deploying software. Think of it as a super-efficient helper that takes care of all the boring and time-consuming work so developers can focus on writing code.

This repository contains hands-on examples and tutorials for setting up Jenkins CI/CD pipelines. It is designed to help beginners and intermediate users understand how to automate build, test, and deployment processes using Jenkins. The repository includes:

• Sample Jenkins pipelines (Declarative and Scripted syntax).
• Integration with Docker for containerized applications.
• Integration with GitHub for source code management.
• Deployment examples using Docker Compose, Kubernetes, and more.
• Step-by-step guides for setting up Jenkins on Ubuntu and other platforms.

Whether you're new to Jenkins or looking to enhance your CI/CD skills, this repository provides practical examples to get you started.

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Key Features

• Jenkins Pipeline Examples:
  • Basic pipeline for building and testing applications.
  • Advanced pipelines with Docker, GitHub, and deployment automation.
• Docker Integration:
  • Build and push Docker images to Docker Hub.
  • Deploy applications using Docker Compose.
• GitHub Integration:
  • Automatically trigger Jenkins builds on GitHub commits.
• Deployment Examples:
  • Deploy applications to local servers, cloud platforms, or Kubernetes clusters.
• Documentation:
  • Detailed README files for each example.
  • Step-by-step setup instructions for Jenkins and dependencies.

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Getting Started

1.Update the System:

sudo apt update
sudo apt upgrade -y

2.Install Java:

sudo apt install openjdk-11-jdk -y

3.Add Jenkins Repository:

curl -fsSL https://pkg.jenkins.io/debian-stable/jenkins.io-2023.key | sudo tee \
  /usr/share/keyrings/jenkins-keyring.asc > /dev/null
echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] \
  https://pkg.jenkins.io/debian-stable binary/ | sudo tee \
  /etc/apt/sources.list.d/jenkins.list > /dev/null
sudo apt update

4.Install Jenkins:

sudo apt install jenkins -y

5.Start and Enable Jenkins

sudo systemctl start jenkins
sudo systemctl enable jenkins
sudo systemctl status jenkins

5.Access Jenkins:

->Open your browser and go to http://:8080. ->Unlock Jenkins using the initial admin password:

sudo cat /var/lib/jenkins/secrets/initialAdminPassword