Plugin compatibility considerations in Jenkins - Mini Project: Build & Apply

Plugin Compatibility Considerations in Jenkins

📖 Scenario: You are managing a Jenkins server that runs automated builds and deployments. To extend Jenkins functionality, you want to install plugins. However, plugins must be compatible with your Jenkins version and with each other to avoid errors.

🎯 Goal: Learn how to list installed plugins, check their versions, and verify compatibility with the Jenkins core version.

📋 What You'll Learn

Use Jenkins CLI commands to list installed plugins

Create a variable holding the Jenkins core version

Filter plugins that are incompatible with the Jenkins core version

Print the list of incompatible plugins

💡 Why This Matters

🌍 Real World

Jenkins administrators must ensure plugins are compatible with the Jenkins core to avoid build failures and security issues.

💼 Career

Knowing how to check plugin compatibility is essential for DevOps engineers managing CI/CD pipelines using Jenkins.

1

List Installed Jenkins Plugins

Use the Jenkins CLI command jenkins-cli.jar with list-plugins option and save the output to a variable called plugins_list.

Jenkins

# Use Jenkins CLI to list plugins and save to plugins_list
# Your code here

Need a hint?

Use backticks to capture command output in a variable.

2

Set Jenkins Core Version Variable

Create a variable called jenkins_core_version and set it to the exact string 2.387.1 representing your Jenkins core version.

Jenkins

plugins_list = `java -jar jenkins-cli.jar -s http://localhost:8080/ list-plugins`
# Set jenkins_core_version to '2.387.1'
# Your code here

Need a hint?

Assign the version string exactly as shown.

3

Filter Incompatible Plugins

Create a list called incompatible_plugins by filtering plugins_list lines that contain the string incompatible or have a minimum Jenkins version higher than jenkins_core_version. Use a loop with variables plugin and details to process each line.

Jenkins

plugins_list = `java -jar jenkins-cli.jar -s http://localhost:8080/ list-plugins`
jenkins_core_version = "2.387.1"
# Filter incompatible plugins into incompatible_plugins list
# Your code here

Need a hint?

Split the plugins_list by new lines and check each line for the word 'incompatible'.

4

Print Incompatible Plugins

Print the incompatible_plugins list to display all plugins that are not compatible with the Jenkins core version.

Jenkins

plugins_list = `java -jar jenkins-cli.jar -s http://localhost:8080/ list-plugins`
jenkins_core_version = "2.387.1"
incompatible_plugins = []
for line in plugins_list.split('\n'):
    if 'incompatible' in line:
        incompatible_plugins.append(line)
# Print the incompatible_plugins list
# Your code here

Need a hint?

Use print(incompatible_plugins) to show the list.