his hands-on guidebook to the inner workings of containers peels back the layers to provide a deep understanding of what a container is, how containerization changes the way programs run, and how Kubernetes provides computing, networking, and storage.

Containers ensure that software runs reliably no matter where it’s deployed, and Kubernetes lets you manage all of your containers from a single control plane. In this comprehensive tour of the open-source platform, each chapter includes a set of example scripts with just enough automation to start your container exploration with ease. Beginning with an overview of modern architecture and the benefits of orchestration, you'll quickly learn how to create containers; how to deploy, administer and debug Kubernetes clusters all the way down to the OS; and how container networking works at the packet level across multiple nodes in a cluster.

Table of Contents

Part I: Making and Using Containers

Chapter 1: Why Containers Matter

Chapter 2: Process Isolation

Chapter 3: Resource Limiting

Chapter 4: Network Namespaces

Chapter 5: Container Images and Runtime Layers

Part II: Containers in Kubernetes

Chapter 6: Why Kubernetes Matters

Chapter 7: Deploying Containers to Kubernetes

Chapter 8: Overlay Networks

Chapter 9: Service and Ingress Networks

Chapter 10: When Things Go Wrong

Chapter 11: Control Plane and Access Control

Chapter 12: Container Runtime

Chapter 13: Health Probes

Chapter 14: Limits and Quotas

Chapter 15: Persistent Storage

Chapter 16: Configuration and Secrets

Chapter 17: Custom Resources and Operators

Part Ill: Performant Kubernetes

Chapter 18: Affinity and Devices

Chapter 19: Tuning Quality of Service

Chapter 20: Application Resiliency

About the Author

Alan Hohn is the Director for Software Strategy for Lockheed Martin. He has 25 years of experience as a Lockheed Martin Fellow, software developer, architect, lead, and manager. He has delivered real applications to production in Ada, Java, Python, and Go, amongst others, and has worked with Linux since the early 1990s. He has led multiple software teams in modernization efforts, incorporating cloud, microservice architecture, and containerization on complex programs. He is an Agile and DevSecOps coach and is an experienced trainer for Java, Ansible, containers, software architecture, and Kubernetes. Hohn has a degree in Computer Science from Embry-Riddle Aeronautical University, a Master's in Business Administration from the University of Minnesota, and a Master's in Industrial Engineering from the Georgia Institute of Technology.