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Jenkins – CI/CD Automation with Real Pipelines ⚙️

Jenkins is used to automate building, testing, and deploying applications. On DevopsPilot, Jenkins is taught using hands-on tutorials and real pipeline examples, not abstract theory.

This section focuses on practical CI/CD workflows used by DevOps engineers.

🔰 What You’ll Learn Here

✔ How to install and set up Jenkins correctly ✔ Core Jenkins concepts (jobs, agents, credentials) ✔ Writing Jenkins pipelines and Jenkinsfiles ✔ Automating builds, Docker images, and deployments

🧠 How Jenkins Is Taught on DevopsPilot

Jenkins learning here is progressive and practical:

  • Start with installation & setup
  • Move to freestyle and Maven jobs
  • Learn pipelines and Jenkinsfile
  • Build real CI/CD pipelines
  • Integrate Jenkins with Git, Docker, Tomcat, and registries

💡 This mirrors how Jenkins is learned and used in real DevOps teams.

📘 Jenkins Learning Structure

Follow this order for best results 👇

🟢 Setup & Basics

  • Install Jenkins with Java
  • Initial Jenkins setup
  • Jenkins UI overview
  • Understanding jobs and builds

🟡 Core Jenkins Concepts

  • Freestyle vs Pipeline jobs
  • Jenkins agents (nodes)
  • Tools configuration (Java, Maven)
  • Plugins and extensions

🟠 Jenkins Pipelines

  • What is a Jenkins pipeline?
  • Pipeline script vs Jenkinsfile
  • Writing Jenkinsfiles
  • Declarative pipeline structure
  • Using options, tools, and environment blocks

🔵 CI/CD Triggers

  • GitHub webhooks
  • Poll SCM
  • Cron-based triggers
  • Upstream and downstream pipelines

🟣 Real CI/CD Examples

  • Build Java Maven projects
  • Store credentials securely
  • Build Docker images
  • Push images to DockerHub / Artifactory
  • Deploy applications using Jenkins pipelines

🔴 Advanced Topics

  • Replaying pipelines
  • Job DSL and seed jobs
  • Managing credentials safely
  • Pipeline best practices

🛠 Real-World Use Cases

  • CI/CD pipelines for Java applications
  • Docker image build and push automation
  • Automated deployments
  • Jenkins-driven release pipelines
  • Infrastructure and app CI workflows

🎯 Who Should Learn Jenkins Here?

✅ DevOps engineers ✅ Backend & Java developers ✅ CI/CD beginners ✅ Anyone automating builds and deployments

🚀 Start Learning

👉 Use the left navigation menu 👉 Start with Jenkins installation 👉 Progress toward Jenkinsfile-based pipelines

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