Kubernetes · Up and Running by Beda, Joe -- Read -- Imperial Library of Trantor

Index

Preface

Kubernetes: A Dedication Who Should Read This Book Why We Wrote This Book A Word on Cloud-Native Applications Today Navigating This Book Online Resources Conventions Used in This Book Using Code Examples O’Reilly Safari How to Contact Us

1. Introduction

Velocity

The Value of Immutability Declarative Configuration Self-Healing Systems

Scaling Your Service and Your Teams

Decoupling Easy Scaling for Applications and Clusters Scaling Development Teams with Microservices Separation of Concerns for Consistency and Scaling

Abstracting Your Infrastructure Efficiency Summary

2. Creating and Running Containers

Container Images

The Docker Image Format

Building Application Images with Docker

Dockerfiles Image Security Optimizing Image Sizes

Storing Images in a Remote Registry The Docker Container Runtime

Running Containers with Docker Exploring the kuard Application Limiting Resource Usage

Cleanup Summary

3. Deploying a Kubernetes Cluster

Installing Kubernetes on a Public Cloud Provider

Google Container Service Installing Kubernetes with Azure Container Service Installing Kubernetes on Amazon Web Services

Installing Kubernetes Locally Using minikube Running Kubernetes on Raspberry Pi The Kubernetes Client

Checking Cluster Status Listing Kubernetes Worker Nodes

Cluster Components

Kubernetes Proxy Kubernetes DNS Kubernetes UI

Summary

4. Common kubectl Commands

Namespaces Contexts Viewing Kubernetes API Objects Creating, Updating, and Destroying Kubernetes Objects Labeling and Annotating Objects Debugging Commands Summary

5. Pods

Pods in Kubernetes Thinking with Pods The Pod Manifest

Creating a Pod Creating a Pod Manifest

Running Pods

Listing Pods Pod Details Deleting a Pod

Accessing Your Pod

Using Port Forwarding Getting More Info with Logs Running Commands in Your Container with exec Copying Files to and from Containers

Health Checks

Liveness Probe Readiness Probe Types of Health Checks

Resource Management

Resource Requests: Minimum Required Resources Capping Resource Usage with Limits

Persisting Data with Volumes

Using Volumes with Pods Different Ways of Using Volumes with Pods Persisting Data Using Remote Disks

Putting It All Together Summary

6. Labels and Annotations

Labels

Applying Labels Modifying Labels Label Selectors Label Selectors in API Objects

Annotations

Defining Annotations

Cleanup Summary

7. Service Discovery

What Is Service Discovery? The Service Object

Service DNS Readiness Checks

Looking Beyond the Cluster Cloud Integration Advanced Details

Endpoints Manual Service Discovery kube-proxy and Cluster IPs Cluster IP Environment Variables

Cleanup Summary

8. ReplicaSets

Reconciliation Loops Relating Pods and ReplicaSets

Adopting Existing Containers Quarantining Containers

Designing with ReplicaSets ReplicaSet Spec

Pod Templates Labels

Creating a ReplicaSet Inspecting a ReplicaSet

Finding a ReplicaSet from a Pod Finding a Set of Pods for a ReplicaSet

Scaling ReplicaSets

Imperative Scaling with kubectl Scale Declaratively Scaling with kubectl apply Autoscaling a ReplicaSet

Deleting ReplicaSets Summary

9. DaemonSets

DaemonSet Scheduler Creating DaemonSets Limiting DaemonSets to Specific Nodes

Adding Labels to Nodes Node Selectors

Updating a DaemonSet

Updating a DaemonSet by Deleting Individual Pods Rolling Update of a DaemonSet

Deleting a DaemonSet Summary

10. Jobs

The Job Object Job Patterns

One Shot Parallelism Work Queues

Summary

11. ConfigMaps and Secrets

ConfigMaps

Creating ConfigMaps Using a ConfigMap

Secrets

Creating Secrets Consuming Secrets Private Docker Registries

Naming Constraints Managing ConfigMaps and Secrets

Listing Creating Updating

Summary

12. Deployments

Your First Deployment

Deployment Internals

Creating Deployments Managing Deployments Updating Deployments

Scaling a Deployment Updating a Container Image Rollout History

Deployment Strategies

Recreate Strategy RollingUpdate Strategy Slowing Rollouts to Ensure Service Health

Deleting a Deployment Summary

13. Integrating Storage Solutions and Kubernetes

Importing External Services

Services Without Selectors Limitations of External Services: Health Checking

Running Reliable Singletons

Running a MySQL Singleton Dynamic Volume Provisioning

Kubernetes-Native Storage with StatefulSets

Properties of StatefulSets Manually Replicated MongoDB with StatefulSets Automating MongoDB Cluster Creation Persistent Volumes and StatefulSets One Final Thing: Readiness Probes

Summary

14. Deploying Real-World Applications

Parse

Prerequisites Building the parse-server Deploying the parse-server Testing Parse

Ghost

Configuring Ghost

Redis

Configuring Redis Creating a Redis Service Deploying Redis Playing with Our Redis Cluster

Summary

A. Building a Raspberry Pi Kubernetes Cluster

Parts List Flashing Images First Boot: Master

Setting Up Networking Installing Kubernetes Setting Up the Cluster

Summary

Index

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