How to Install Jenkins on Ubuntu (Step-by-Step Guide) If you're a developer or DevOps engineer, Jenkins is one of the most powerful tools you can have in your CI/CD pipeline. In this guide, we’ll walk through how to install Jenkins on an Ubuntu system from scratch — including the setup of Java , system services , and how to access the Jenkins dashboard. 📋 Prerequisites Before diving in, make sure: You're running Ubuntu 22.04 LTS or similar You have sudo privileges Your system has access to the internet ☕ Step 1: Install Java Jenkins requires Java 17 or newer. Here’s how to install OpenJDK 17: sudo apt update sudo apt install fontconfig openjdk-21-jre You can verify the installation: java -version openjdk version "21.0.3" 2024-04-16 OpenJDK Runtime Environment ( build 21.0.3+11-Debian-2 ) OpenJDK 64-Bit Server VM ( build 21.0.3+11-Debian-2, mixed mode, sharing ) 📦 Step 2: Add Jenkins Repository Jenkins isn’t in Ubuntu’s default repos, ...