[{"_1":2,"_46":-5,"_47":-5},"loaderData",{"_3":4,"_14":15,"_44":-5,"_45":-5},"root",{"_5":-5,"_6":-5,"_7":-5,"_8":9,"_10":11},"user","shoppingCartId","toast","locale","en","constants",{"_12":13},"paypalClientId","AenrHU49peF-ZUH-Yq7AXLLNZYGUGlml474U16NCjB4ZznmQCEjiliN3whyuVZmkb7VxEzmTALgtKEKE","routes/_store+/_readers+/email_author.$slug/route",{"_16":17,"_43":-5},"book",{"_18":19,"_20":21,"_22":23,"_24":25,"_26":27,"_28":29},"id","Z2lkOi8vbGVhbnB1Yi9TdG9yZTo6Qm9va1Byb2R1Y3QvMzg0NzA","title","Kubernetes in Practice","state","published","contactAuthorMethod","email","aboutText","

Kubernetes is here to stay.

In the beginning, there was the monolith. It was easy to deploy and easy to keep it running, we had only one thing (or a few) to keep an eye on.

But it was not perfect. It was hard to scale individual components, changes in one tiny part of the application required a whole redeployment and the lack of clear boundaries could lead to a design that was not-so-great.

The industry started converging to microservice-based architectures. What was before a single application became dozens of services that could be more easily scaled and deployed individually.

But it was not perfect. Having dozens, hundreds, or thousands of services running reliably is no easy task. It was clear we needed a way to orchestrate these applications and services that are now running in containers. That's where Kubernetes comes into play.

Kubernetes is complex, but getting started should be easier.

You start studying Kubernetes. They start talking about cgroups, pid namespaces and overlay networks and you have no idea why you should care. You just want to learn how to run your applications and what Kubernetes brings to the table.

It doesn't need to be this hard.

Kubernetes is, no doubt, a very complex tool, but it does an amazing job at abstracting that complexity from us so we can start using it and learning about what is really important: How do I run my applications reliably?

We will have plenty of time to get down to the nitty-gritty of Kubernetes, but that shouldn't be the focus when you are starting out.

What you will learn:

This book is practical, we will run applications with Kubernetes from chapter one. You will learn everything you need to know to reliably run your own applications, both locally and with a cloud provider. We will see how to scale our applications, different ways to expose them to the outside world, how to deal with configs and secrets our apps need, handle rollouts with zero downtime and more!

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