Dynamic parameter values in Jenkins - Cheat Sheet & Quick Revision

Recall & Review

beginner

What are dynamic parameter values in Jenkins?

Dynamic parameter values are values for build parameters that are generated or fetched at build time, allowing the parameters to change based on current data or environment.

intermediate

How can you create a dynamic choice parameter in Jenkins?

You can use the 'Active Choices Plugin' or 'Extended Choice Parameter Plugin' to create parameters whose options are generated by a script or external source at build time.

beginner

Which scripting languages are commonly used to generate dynamic parameter values in Jenkins?

Groovy is the most common scripting language used in Jenkins to generate dynamic parameter values because Jenkins supports Groovy scripts natively.

beginner

What is the benefit of using dynamic parameter values in Jenkins builds?

They allow builds to be more flexible and context-aware by providing up-to-date options, such as current branches, tags, or environment-specific values, improving automation and reducing manual errors.

intermediate

Give an example of a simple Groovy script to generate dynamic parameter values in Jenkins.

Example: return ['dev', 'test', 'prod'] This script returns a list of environment names as parameter options dynamically.

What plugin is commonly used to create dynamic choice parameters in Jenkins?

A Slack Notification Plugin

B Git Plugin

C Docker Plugin

D Active Choices Plugin

The Active Choices Plugin allows you to create parameters with dynamic values generated by scripts.

Which language is primarily used for scripting dynamic parameters in Jenkins?

A Groovy

B Bash

C Ruby

D Python

Groovy is the native scripting language supported by Jenkins for dynamic parameter generation.

Why use dynamic parameter values in Jenkins builds?

A To hardcode values for every build

B To disable parameters

C To provide up-to-date options based on current data

D To speed up the Jenkins UI

Dynamic parameters provide current and relevant options, improving build flexibility.

Which of these is NOT a typical source for dynamic parameter values?

A Current Git branches

B Static text files

C External APIs

D Build environment variables

Static text files are fixed and do not provide dynamic values.

What happens if a dynamic parameter script in Jenkins fails to run?

A The parameter list may be empty or cause an error

B The build proceeds with default values

C Jenkins restarts automatically

D The build is skipped silently

If the script fails, the parameter options may not load, causing errors or empty lists.

Explain how dynamic parameter values improve Jenkins build flexibility and give an example.

Think about how build choices can change over time.

Describe the steps to create a dynamic choice parameter in Jenkins using a Groovy script.

Focus on plugins and scripting.