Why distributed builds matter in Jenkins - See It in Action

Why Distributed Builds Matter

📖 Scenario: You are working in a software team that uses Jenkins to build projects. The project is growing, and builds are taking longer. You want to learn how to set up distributed builds to speed up the process by using multiple machines.

🎯 Goal: Learn how to configure Jenkins to use distributed builds by setting up a master and agents, and understand why this helps speed up build times.

📋 What You'll Learn

Create a Jenkins master node configuration dictionary

Add an agent node configuration variable

Write a function to assign builds to nodes

Print the assigned build nodes

💡 Why This Matters

🌍 Real World

Distributed builds help teams run software builds faster by using multiple computers instead of just one. This is like having many cooks in a kitchen to prepare a big meal quickly.

💼 Career

Understanding distributed builds is important for DevOps engineers and build managers to optimize continuous integration and delivery pipelines.

1

Create Jenkins master node configuration

Create a dictionary called jenkins_master with these exact entries: 'name': 'master-node', 'ip': '192.168.1.1', and 'role': 'master'.

Jenkins

# Create a dictionary called jenkins_master with name, ip, and role
# Your code here

Need a hint?

Use curly braces to create a dictionary with the keys and values exactly as shown.

2

Add Jenkins agent node configuration

Create a dictionary called jenkins_agent with these exact entries: 'name': 'agent-node-1', 'ip': '192.168.1.2', and 'role': 'agent'.

Jenkins

jenkins_master = {'name': 'master-node', 'ip': '192.168.1.1', 'role': 'master'}
# Create a dictionary called jenkins_agent with name, ip, and role
# Your code here

Need a hint?

Use the same dictionary format as the master node but with the agent details.

3

Assign builds to nodes

Write a function called assign_build that takes a list of nodes and returns a list of node names where builds will run. Use a for loop with variable node to iterate over nodes and collect node['name'] in a list called assigned_nodes. Return assigned_nodes.

Jenkins

jenkins_master = {'name': 'master-node', 'ip': '192.168.1.1', 'role': 'master'}
jenkins_agent = {'name': 'agent-node-1', 'ip': '192.168.1.2', 'role': 'agent'}

# Write a function assign_build(nodes) that returns a list of node names
# Your code here

Need a hint?

Use a for loop to go through each node and add its name to the list.

4

Print assigned build nodes

Create a list called nodes containing jenkins_master and jenkins_agent. Then print the result of calling assign_build(nodes).

Jenkins

jenkins_master = {'name': 'master-node', 'ip': '192.168.1.1', 'role': 'master'}
jenkins_agent = {'name': 'agent-node-1', 'ip': '192.168.1.2', 'role': 'agent'}

def assign_build(nodes):
    assigned_nodes = []
    for node in nodes:
        assigned_nodes.append(node['name'])
    return assigned_nodes

# Create a list nodes with jenkins_master and jenkins_agent
# Print the result of assign_build(nodes)
# Your code here

Need a hint?

Put the two node dictionaries in a list and print the function call result.