CKAD — Pod Design Patterns

Chapter Overview

A Pod is the smallest deployable unit in Kubernetes. It wraps one or more containers that share networking and storage. For the CKAD exam, you need to understand how to design Pods effectively — using labels, annotations, selectors, and managing the Pod lifecycle.

This chapter covers the Application Design and Build domain (20% of the exam). It is split into focused sub-topics so you can quickly find exactly what you need.

What You’ll Learn

#	Topic	Description
1	Understanding Pods	What Pods are, single-container basics, and CKAD exam context
2	Labels and Selectors	Adding, viewing, and selecting resources with labels
3	Annotations	Non-identifying metadata for tools, humans, and controllers
4	Pod Lifecycle	Pod phases, container states, status checking, and debugging
5	Ephemeral Volumes	emptyDir and hostPath volumes for temporary data sharing
6	Restart Policies	Always, OnFailure, and Never — when to use each
7	Node Selection	nodeSelector and node affinity for scheduling control
8	Hands-On Lab & Practice	Label management labs, lifecycle debugging, and exam-style questions

CKAD Exam Relevance

This chapter maps to the Application Design and Build domain:

• Choose and use the right workload resource
• Understand Pod design patterns and lifecycle
• Utilize persistent and ephemeral volumes

Weight: ~20% of the exam score.

Prerequisites

• Basic familiarity with Kubernetes concepts
• A working kubectl setup (local or cloud)
• Completed the Introduction chapter

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Start Learning: Understanding Pods →