Start Kubernetes
Start Kubernetes
The Beginner's Guide to Kubernetes
About the Book
This 230-page book is packed full of all the basic concepts and introductions into the more complex capabilities. And I’ve made it an exciting read with detailed explanations, colorful diagrams, practical examples, and more!
Why Kubernetes?
In recent years, Kubernetes has risen to become a leading platform for cloud-native technology. Its container orchestration capabilities have allowed for much smoother operation of applications.
Service Discovery & Load Balancing
Not only will your application adapt to any unfamiliar service discovery mechanism, but each Pod within the application will get its very own IP address that can be accessed with a single DNS. You can also load-balance across a group of Pods!
Self-Healing
When needed, Kubernetes will automatically restart and reschedule containers to ensure a healthy flow of traffic through applications.
Configuration & Secret Management
You’ll never have to rebuild your applications in order to update your configuration settings or secrets.
Scaling
Scale your application with a single command or sit back and allow the application to scale on auto-pilot based on your CPU usage.
Rollouts & Rollbacks
Piece by piece, introduce changes to your application and configuration that will allow for close monitoring and quick recovery in case of any failures
Storage Management
Quickly mount your desired storage system directly to the application; local, cloud-provider, network system, and more.
"All of these features sound great! But how hard is it to learn Kubernetes...?"
In short, Kubernetes likes to do things its own way. While mastering the platform is really just a matter of grasping a few concepts, it can feel overwhelming to the untrained eye.
Take, for example, the simple action of deploying and running an application inside Kubernetes. You have to:
- Launch a Deployment that represents your application
- Then, a ReplicaSet to control the Scaling
- Next, you need a Service and a DNS name to access the application
- Plus at least one or more Pods with containers
- AND FINALLY, you can set the Configuration and/or Secrets
That’s FIVE different processes that must work seamlessly to complete one simple action. And while it’s a dream for experienced users, Kubernetes also allows for tweaks and configurations to each of those steps that drastically change their entire behavior.
To the untrained user, this complexity can be too much to handle and the terminology is completely new!
I remember when I first started learning…
"What the heck is a Pod?!"
"Why do I need Deployments?"
"ReplicaSets, Ingress, Volumes, RBAC... What is all of this?!?"
I have created this book to flatten the learning curve of Kubernetes and make sure it can be a solid tool for anyone who needs it!
Who is this book for?
If you are a developer, system administrator, or solution architect who wants to make the transition into Kubernetes an absolute breeze, this course is your key to success. For the best results, we recommend users have a basic knowledge of Docker and how to run a container or build an image. But other than that, this book can take you from scratch to master!
After reading this book, you'll be able to:
- Deploy & Run Containerized Applications
- Perform Updates & Rollbacks
- Use Kubernetes CLI to interact with Clusters
- Understand All Kubernetes Resources & How to Use Them
- Combine Multiple Containers Within a Pod
- Configure Containers Using Secrets, Volumes & Configuration Maps
- Run Stateful Applications
- Scale Applications
- Extend Kubernetes Using CRDs and Operators
Reader Testimonials
Gavin G.
Just spent the weekend working through your "Getting started with Kubernetes" article and it was awesome, having known zero about Kubernetes previously. Keep up the good work, hope you do the other parts!
Ife S.
I read your article on Getting Started with Kubernetes and it was really super helpful. Thank you for taking the time out to write it. I've been trying to make the jump to DevOps engineer, learning Docker and Kubernetes but other tutorials can get so complicated and hard to understand. This one was particularly eay to read. Definitely waiting on subsequent parts of the article and the book.
Gopal A.
"Getting started with Kubernetes" was the material I was looking for to get an introduction to k8s. Thanks.
Lorenzo L.
Just started reading, and I'm already learning new stuff! Thanks for sharing, I am still at the beginning but it's really clear and useful.
Riccardo T.
I need to say that the part related to Services is very clear and easy. Super simple!
Table of Contents
-
1. Getting Started
- 1.1 What do I need to start with Kubernetes?
- 1.2 Which cluster to use?
- 1.3 What is container orchestration?
- 1.4 Kubernetes vs. Docker
- 1.5 Kubernetes vs. Docker Swarm
-
2. Kubernetes Architecture
- 2.1 Master nodes
- 2.2 Worker nodes
-
3. Kubernetes Resources
- 3.1 Labels and Selectors
- 3.2 Annotations
- 3.3 Working with Pods
- 3.4 Managing Pods with ReplicaSets
- 3.5 Creating Deployments
- 3.6 Accessing and Exposing Pods with Services
- 3.7 Exposing Multiple Applications with Ingress
- 3.8 Organizing Applications with Namespaces
- 3.9 Jobs and CronJobs
-
4. Configuration
- 4.1 configuring Applications Through Arguments
- 4.2 Creating and Using ConfigMaps
- 4.3 Storing Secrets in Kubernetes
-
5. Stateful Workloads
- 5.1 What are Volumes?
- 5.2 Persisting Data with Persistent Volumes and Claims
- 5.3 Running Stateful Workloads with StatefulSets
-
6. Organizing Containers
- 6.1 Init Containers
- 6.2 Sidecar Container Pattern
- 6.3 Adapter Container Pattern
- 6.4 Ambassador Container Pattern
-
7. Application Health
- 7.1 Application Liveness Probe
- 7.2 Application Readiness Probe
- 7.3 Application Startup Probe
-
8. Security in Kubernetes
- 8.1 What are Service Accounts?
- 8.2 Using Role Based Access Control (RBAC)
- 8.3 Security Contexts
- 8.4 Pod Secuirty Policies (PSP)
- 8.5 Network Policies
-
9. Scaling and Resources
- 9.1 Scaling and Autoscaling Pods
- 9.2 Resource Requests and Limits
- 9.3 Horizontal Scaling
- 9.4 Resource Quotas
- 9.5 Using Affinity, Taints, and Tolerations
-
10. Extending Kubernetes
- 10.1 Using Custom Resource Definitions (CRDs)
- 10.2 Writing Kubernetes Operators
-
11. Practical Kubernetes
- 11.1 Using an Ingress Controller for SSL Termination
Other books by this author
Authors have earned$10,072,521writing, publishing and selling on Leanpub, earning 80% royalties while saving up to 25 million pounds of CO2 and up to 46,000 trees.
Learn more about writing on Leanpub
The Leanpub 45-day 100% Happiness Guarantee
Within 45 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
See full terms
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them
Top Books
C++ Best Practices
Jason TurnerLevel up your C++, get the tools working for you, eliminate common problems, and move on to more exciting things!
Digital-First Events
Joep Piscaer and Jana BorutaThe only resource you will ever need to launch your digital events program.
C++20
Rainer GrimmC++20 is the next big C++ standard after C++11. As C++11 did it, C++20 changes the way we program modern C++. This change is, in particular, due to the big four of C++20: ranges, coroutines, concepts, and modules.
The book is almost daily updated. These incremental updates ease my interaction with the proofreaders.
Sockets and Pipes
Type ClassesSockets and Pipes is not an introduction to Haskell; it is an introduction to writing software in Haskell. Using a handful of everyday Haskell libraries, this book walks through reading the HTTP specification and implementing it to create a web server.
Atomic Kotlin
Bruce Eckel and Svetlana IsakovaFor both beginning and experienced programmers! From the author of the multi-award-winning Thinking in C++ and Thinking in Java together with a member of the Kotlin language team comes a book that breaks the concepts into small, easy-to-digest "atoms," along with exercises supported by hints and solutions directly inside IntelliJ IDEA!
Introducing EventStorming
Alberto BrandoliniThe deepest tutorial and explanation about EventStorming, straight from the inventor.
Cloud Strategy
Gregor Hohpe“Strategy is the difference between making a wish and making it come true.” A successful migration to the cloud can transform your organization, but it shouldn’t be driven by wishes. This book tells you how to develop a sound strategy guided by frameworks and decision models without being overly abstract nor getting lost in product details.
Ansible for DevOps
Jeff GeerlingAnsible is a simple, but powerful, server and configuration management tool. Learn to use Ansible effectively, whether you manage one server—or thousands.
node-opcua by example
Etienne RossignonGet the best out of node-opcua through a set of documented examples by the author himself that will allow you to create stunning OPCUA Servers or Clients.
R Programming for Data Science
Roger D. PengThis book brings the fundamentals of R programming to you, using the same material developed as part of the industry-leading Johns Hopkins Data Science Specialization. The skills taught in this book will lay the foundation for you to begin your journey learning data science. Printed copies of this book are available through Lulu.
Top Bundles
- #1
Software Architecture for Developers: Volumes 1 & 2 - Technical leadership and communication
2 Books
"Software Architecture for Developers" is a practical and pragmatic guide to modern, lightweight software architecture, specifically aimed at developers. You'll learn:The essence of software architecture.Why the software architecture role should include coding, coaching and collaboration.The things that you really need to think about before... - #2
Django for Beginners/APIs/Professionals
3 Books
- #3
CCIE Service Provider Ultimate Study Bundle
2 Books
Piotr Jablonski, Lukasz Bromirski, and Nick Russo have joined forces to deliver the only CCIE Service Provider training resource you'll ever need. This bundle contains a detailed and challenging collection of workbook labs, plus an extensively detailed technical reference guide. All of us have earned the CCIE Service Provider certification... - #4
Cisco CCNA 200-301 Complet
4 Books
Ce lot comprend les quatre volumes du guide préparation à l'examen de certification Cisco CCNA 200-301. - #5
Linux Administration Complet
4 Books
Ce lot comprend les quatre volumes du Guide Linux Administration :Linux Administration, Volume 1, Administration fondamentale : Guide pratique de préparation aux examens de certification LPIC 1, Linux Essentials, RHCSA et LFCS. Administration fondamentale. Introduction à Linux. Le Shell. Traitement du texte. Arborescence de fichiers. Sécurité... - #6
Modern Management Made Easy
3 Books
Read all three Modern Management Made Easy books. Learn to manage yourself, lead and serve others, and lead the organization. - #7
Mastering Containers
2 Books
Docker and Kubernetes are taking the world by storm! These books will get you up-to-speed fast! Docker Deep Dive is over 400 pages long, and covers all objectives on the Docker Certified Associate exam.The Kubernetes Book includes everything you need to get up and running with Kubernetes! - #8
CCDE Practical Studies (All labs)
3 Books
CCDE lab - #9
All the Books of The Medical Futurist
6 Books
We put together the most popular books from The Medical Futurist to provide a clear picture about the major trends shaping the future of medicine and healthcare. Digital health technologies, artificial intelligence, the future of 20 medical specialties, big pharma, data privacy, digital health investments and how technology giants such as Amazon... - #10
Cloud Architect: Transform Technology and Organization
2 Books
Architects don't just recite product names and features. They understand the options, decisions, and trade-offs behind them. They earn credibility and maintain authenticity by connecting the penthouse with the engine room. Get two essential books that redefine the role of the software and IT architect at one low price:37 Things One Architect...