Learn Kubernetes - Container orchestration using Docker

This book is for anyone who needs to run software on Kubernetes. Whether you’re a developer, a DevOps manager or a technician, this book should help you plan and run Kubernetes workloads. I assume that you have no previous knowledge about containers or containers orchestration. I made my best to keep this book small, so that you can learn Kubernetes quickly without getting lost in petty details. If you are looking for a reference book where you’ll find answers to all the questions you may have within the next 4 years of your Kubernetes practice, you’ll find other heavy books for that. My purpose is to swiftly provide you with the tools you need to create and run your first cloud-ready application using Kubernetes, then be able to look for more by yourself when needed. Plus this book is packed with exercises and samples where you create, run and manage your own applications on a Kubernetes cluster. Read this book, and you can create and run your first Kubernetes application within a week. Cover Page Learn Kubernetes Introduction What this book is not Prerequisites How to read this book Tools you need Source code 1. Why Kubernetes 1.1 DevOps challenges 1.2 Containers 1.3 Docker containers 1.4 Deploying images 1.5 The need for container orchestration 1.6 What’s K8s? 2. Kubernetes cluster 2.1 Parts of a Kubernetes cluster 2.2 Creating a cluster 2.3 Exercise - Set up your development cluster 2.4 Exercise solution 2.5 Connecting to a cluster 3. Tooling 3.1 Kubernetes Dashboard 3.2 Visual Studio Code 3.3 Helm 4. Running pods 4.1 Deployments and ReplicaSets 4.2 Imperative commands 4.3 Exercise - Use imperative commands 4.4 Exercise solution 4.5 Exercise - Observe Kubernetes handle a failing pod 4.6 Exercise solution 4.7 Declarative commands 4.8 Exercise - Create resources using declarative commands 4.9 Exercise solution 4.10 Exercise - Update a Pod created declaratively 4.11 Exercise solution 4.12 Debugging 4.13 Exercise - Debugging failing Pods 4.14 Exercise solution 4.15 Exercise - Delete created objects 4.16 Exercise solution 4.17 Resources management 5. Exposing services 5.1 The need for services 5.2 Services 5.3 Exercise - Expose a web application to the internet 5.4 Exercise solution 5.5 Exercise - Expose an API inside the cluster 5.6 Exercise solution 5.7 Ingress 6. Volumes 6.1 The need for volumes 6.2 Short-lived storage with Volumes 6.3 Exercise - Create and use a Volume 6.4 Exercise solution 6.5 Persistent storage with PersistentVolumeClaims 6.6 Exercise - Create and use a PersistentVolume 6.7 Exercise solution 7. Configuration 7.1 Similar but different 7.2 ConfigMap 7.3 Exercise - Create and use a ConfigMap 7.4 Exercise solution 7.5 Secret 7.6 Exercise - Create and use a Secret 7.7 Exercise solution 8. Updating and scaling 8.1 Horizontal scaling 8.2 Automatic horizontal scaling 8.3 Update strategies 9. Sharing a cluster 9.1 Namespaces 9.2 RBAC 10. Helm 10.1 Using Helm 10.2 Creating Helm packages (charts) A word from the author Image attributions The Learn collection