Certified Kubernetes Application Developer (CKAD) Study Guide

Table of contents

1. Preface
   1. Who This Book Is For
   2. What You Will Learn
   3. Conventions Used in This Book
   4. Using Code Examples
   5. O’Reilly Online Learning
   6. How to Contact Us
   7. Acknowledgments
2. 1. Exam Details and Resources
   1. Exam Objectives
   2. Curriculum
      1. Core Concepts
      2. Configuration
      3. Multi-Container Pods
      4. Observability
      5. Pod Design
      6. Services & Networking
      7. State Persistence
   3. Exam Environment and Tips
   4. Candidate Skills
   5. Time Management
   6. Command Line Tips and Tricks
      1. Setting a Context and Namespace
      2. Using an Alias for kubectl
      3. Internalize Resource Short Names
      4. Deleting Kubernetes Objects
      5. Finding Object Information
      6. Discovering Command Options
   7. Practicing and Practice Exams
   8. Summary
3. 2. Core Concepts
   1. Kubernetes Primitives
   2. Using kubectl to Interact with the Kubernetes Cluster
   3. Object Management
      1. Imperative Approach
      2. Declarative Approach
      3. Hybrid Approach
      4. Which Approach to Use?
      5. Other Notable Commands
   4. Understanding Pods
   5. Containerization Process
      1. Container Concepts
      2. Example: Containerizing a Java-Based Application
   6. Creating Pods
   7. Listing Pods
   8. Pod Life Cycle Phases
   9. Rendering Pod Details
   10. Accessing Logs of a Pod
   11. Executing a Command in Container
   12. Deleting a Pod
   13. Configuring Pods
       1. Declaring Environment Variables
       2. Defining a Command with Arguments
   14. Understanding Namespaces
   15. Listing Namespaces
   16. Creating and Using a Namespace
   17. Deleting a Namespace
   18. Summary
   19. Exam Essentials
   20. Sample Exercises
4. 3. Configuration
   1. Defining and Consuming Configuration Data
      1. Creating a ConfigMap
      2. Consuming a ConfigMap as Environment Variables
      3. Mounting a ConfigMap as Volume
      4. Creating a Secret
      5. Consuming a Secret as Environment Variables
      6. Mounting a Secret as Volume
   2. Understanding Security Contexts
   3. Understanding Resource Boundaries
      1. Creating a ResourceQuota
      2. Exploring ResourceQuota Enforcement
   4. Understanding Service Accounts
      1. Creating and Assigning Custom Service Accounts
   5. Summary
   6. Exam Essentials
   7. Sample Exercises
5. 4. Multi-Container Pods
   1. Defining Multiple Containers in a Pod
   2. Init Containers
   3. The Sidecar Pattern
   4. The Adapter Pattern
   5. The Ambassador Pattern
   6. Summary
   7. Exam Essentials
   8. Sample Exercises
6. 5. Observability
   1. Understanding Health Probing
   2. Readiness Probe
   3. Liveness Probe
   4. Startup Probe
   5. Debugging in Kubernetes
      1. Troubleshooting Pods
      2. Opening an Interactive Shell
      3. Using an Ephemeral Container
      4. Troubleshooting Services
   6. Monitoring
   7. Summary
   8. Exam Essentials
   9. Sample Exercises
7. 6. Pod Design
   1. Understanding Labels
   2. Declaring Labels
   3. Inspecting Labels
   4. Modifying Labels for a Live Object
   5. Using Label Selectors
      1. Label Selection from the Command Line
      2. Label Selection in a Manifest
   6. Understanding Annotations
   7. Declaring Annotations
   8. Inspecting Annotations
   9. Modifying Annotations for a Live Object
   10. Understanding Deployments
   11. Creating Deployments
   12. Listing Deployments
   13. Rendering Deployment Details
   14. Rolling Out a New Revision
   15. Rolling Back to a Previous Revision
   16. Manually Scaling a Deployment
   17. Autoscaling a Deployment
   18. Horizontal Pod Autoscaler
   19. Understanding Jobs
   20. Creating and Inspecting Jobs
   21. Job Operation Types
   22. Restart Behavior
       1. Restarting the Container on Failure
       2. Starting a New Pod on Failure
   23. Understanding CronJobs
   24. Creating and Inspecting Jobs
   25. Configuring Retained Job History
   26. Summary
   27. Exam Essentials
   28. Sample Exercises
8. 7. Services & Networking
   1. Understanding Services
   2. Service Types
   3. Creating Services
   4. Listing Services
   5. Rendering Service Details
   6. Port Mapping
   7. Accessing a Service with Type ClusterIP
   8. Accessing a Service with Type NodePort
   9. Deployments and Services
   10. Understanding Network Policies
   11. Creating Network Policies
   12. Listing Network Policies
   13. Rendering Network Policy Details
   14. Isolating All Pods in a Namespace
   15. Restricting Access to Ports
   16. Summary
   17. Exam Essentials
   18. Sample Exercises
9. 8. State Persistence
   1. Understanding Volumes
   2. Volume Types
   3. Creating and Accessing Volumes
   4. Understanding Persistent Volumes
   5. Static Versus Dynamic Provisioning
   6. Creating PersistentVolumes
   7. Creating PersistentVolumeClaims
   8. Mounting PersistentVolumeClaims in a Pod
   9. Summary
   10. Exam Essentials
   11. Sample Exercises
10. Answers to Review Questions
    1. Chapter 2, Core Concepts
    2. Chapter 3, Configuration
    3. Chapter 4, Multi-Container Pods
    4. Chapter 5, Observability
    5. Chapter 6, Pod Design
    6. Chapter 7, Services and Networking
    7. Chapter 8, State Persistence
11. Index
12. About the Author