🚀 Day 28 Task: Exploring Jenkins Agents 🤖

Welcome back, folks! Today, we're diving into the fascinating world of Jenkins agents. 🏗️ Let's break down the key concepts using emojis to make it super simple to understand. 🎉

🌐 Jenkins Master (Server) 🖥️

Think of the Jenkins master as the conductor of an orchestra. 🎵 It holds all the important configurations and is like the control center for Jenkins. This master server is responsible for orchestrating all the tasks in our pipelines. It schedules jobs, keeps an eye on them, and makes sure everything runs smoothly. 🕰️

💼 Jenkins Agent 🤖

Meet the agent – a worker bee! 🐝 It's usually a machine or container that connects to the Jenkins master. The agent is the one who actually does the heavy lifting and performs the steps outlined in a job. Every time you create a Jenkins job, you need to assign an agent to it. Each agent has a special label to tell them apart.

🏃 How It Works 🔄

When you hit that Jenkins job button, the magic happens on the agent node you assigned to it. The agent takes care of executing the job while the master guides the show. It's like a tag team – the master plans, and the agent executes! 💥

📈 Scaling Up 📊

Imagine you're growing a garden. At first, a single Jenkins setup works fine for a small team and a few projects. But as your garden flourishes, you need more hands! That's where the "master to agent connection" comes in. Instead of piling everything on one system, you bring in agents to handle job execution. The master takes care of the UI and keeps things in line. 🌱

🛠️ Pre-requisites 🧰

Before we dive in, make sure you have a fresh Ubuntu 22.04 Linux setup. To make your agent work its magic, you need to install Java (same version as your Jenkins master) and Docker on it. Think of it as preparing the stage for the agent's performance. 🎭

📜 Task-01: Setting Up an Agent Node 🌟

Let's create a new character – our agent! We're setting up a node on Jenkins to make this happen. It's like giving our orchestra a new musician. To do this, we'll need an AWS EC2 instance and connect it to our master (where Jenkins lives). The connection requires a bit of magic – SSH and exchanging public-private key pairs. Once everything is in place, you can spot your new agent's status under the "Nodes" section. 🎻

🔁 Task-02: Putting Your Agent to Work 💪

Remember those cool jobs you built on Day 26 and Day 27? It's time to put your new agent to work! 🛠️ By using labels, you can tell your master to assign jobs to your agent. Your master, the maestro, triggers the builds, and your agent gets to work on executing them. It's teamwork at its best! 🎈

That's a wrap for Day 28, folks! 🎬 We've explored Jenkins agents, those hardworking helpers that make Jenkins even more awesome. Now you're ready to unleash the power of agents in your Jenkins setup. Until next time, keep coding and keep automating! 🚀🤖🌟