Freestyle job creation in Jenkins - Mini Project: Build & Apply

Freestyle Job Creation in Jenkins

📖 Scenario: You are a DevOps engineer setting up a simple Jenkins freestyle job to automate a build process. This job will run a shell command to print a welcome message.

🎯 Goal: Build a Jenkins freestyle job configuration that defines the job name, adds a shell build step with a specific command, and outputs the build log showing the command's output.

📋 What You'll Learn

Create a Jenkins freestyle job configuration with the exact job name WelcomeJob.

Add a shell build step that runs the command echo "Welcome to Jenkins freestyle job!".

Print the build log output showing the welcome message.

💡 Why This Matters

🌍 Real World

Jenkins freestyle jobs are commonly used to automate simple build and deployment tasks in software projects.

💼 Career

Understanding how to configure and simulate Jenkins jobs helps DevOps engineers automate workflows and troubleshoot build processes.

1

Create the Jenkins freestyle job configuration

Create a variable called job_config and assign it a dictionary with a key name set to the string "WelcomeJob".

Jenkins

# Create the job_config dictionary with the job name
# Your code here

Need a hint?

Use a dictionary with the key "name" and value "WelcomeJob".

2

Add a shell build step command

Add a key build_steps to the job_config dictionary and assign it a list containing the exact string "echo \"Welcome to Jenkins freestyle job!\"".

Jenkins

job_config = {"name": "WelcomeJob"}
# Add the build_steps list with the echo command
# Your code here

Need a hint?

Add a list with the exact echo command string as the value for the key "build_steps".

3

Simulate running the build steps

Create a variable called build_log and assign it an empty list. Then use a for loop with variable step to iterate over job_config["build_steps"]. Inside the loop, append the string "Running: " + step to build_log and then append the exact output string "Welcome to Jenkins freestyle job!" to build_log.

Jenkins

job_config = {"name": "WelcomeJob"}
job_config["build_steps"] = ["echo \"Welcome to Jenkins freestyle job!\""]
# Simulate running the build steps and collect output
# Your code here

Need a hint?

Use a loop to append the command and its output to build_log.

4

Print the build log output

Use a for loop with variable line to iterate over build_log and print each line.

Jenkins

job_config = {"name": "WelcomeJob"}
job_config["build_steps"] = ["echo \"Welcome to Jenkins freestyle job!\""]
build_log = []
for step in job_config["build_steps"]:
    build_log.append("Running: " + step)
    build_log.append("Welcome to Jenkins freestyle job!")
# Print each line in build_log
# Your code here

Need a hint?

Print each line from the build_log list using a loop.