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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