Jenkins plugin system concept - Mini Project: Build & Apply

Understanding Jenkins Plugin System

📖 Scenario: You are setting up a Jenkins server to automate your software builds. Jenkins uses plugins to add extra features like notifications, source control integration, and build tools.To manage plugins, you need to understand how to list installed plugins, add new plugins, and check plugin statuses.

🎯 Goal: Learn how to work with Jenkins plugins by listing installed plugins, adding a new plugin, and verifying the plugin installation status using Jenkins CLI commands.

📋 What You'll Learn

Use Jenkins CLI commands to list installed plugins

Add a plugin using Jenkins CLI

Check the status of a specific plugin

Print the final list of plugins including the newly added one

💡 Why This Matters

🌍 Real World

Jenkins plugins extend Jenkins capabilities to support many tools and workflows in software development.

💼 Career

Knowing how to manage Jenkins plugins is essential for DevOps engineers to customize and maintain CI/CD pipelines.

1

List Installed Jenkins Plugins

Write the Jenkins CLI command to list all installed plugins using java -jar jenkins-cli.jar -s http://localhost:8080 list-plugins and save the output to a file called plugins.txt.

Jenkins

# Write the command to list installed plugins and save to plugins.txt
# Your code here

Need a hint?

Use the Jenkins CLI list-plugins command and redirect output to plugins.txt.

2

Add a New Plugin

Write the Jenkins CLI command to install the git plugin using java -jar jenkins-cli.jar -s http://localhost:8080 install-plugin git.

Jenkins

java -jar jenkins-cli.jar -s http://localhost:8080 list-plugins > plugins.txt
# Write the command to install the git plugin
# Your code here

Need a hint?

Use the install-plugin command with the plugin name git.

3

Check Plugin Installation Status

Write the Jenkins CLI command to check the status of the git plugin using java -jar jenkins-cli.jar -s http://localhost:8080 list-plugins | grep git.

Jenkins

java -jar jenkins-cli.jar -s http://localhost:8080 list-plugins > plugins.txt
java -jar jenkins-cli.jar -s http://localhost:8080 install-plugin git
# Write the command to check git plugin status
# Your code here

Need a hint?

Use list-plugins and filter output with grep git to see the plugin status.

4

Display Final Plugins List

Write the commands to first update plugins.txt with the current list of plugins and then display its contents.

Jenkins

java -jar jenkins-cli.jar -s http://localhost:8080 list-plugins > plugins.txt
java -jar jenkins-cli.jar -s http://localhost:8080 install-plugin git
java -jar jenkins-cli.jar -s http://localhost:8080 list-plugins | grep git
# Write the command(s) to update plugins.txt and display it
# Your code here

Need a hint?

Update the file first: java -jar jenkins-cli.jar -s http://localhost:8080 list-plugins > plugins.txt, then cat plugins.txt.