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50 Kubernetes Concepts Every DevOps Engineer Should Know

50 Kubernetes Concepts Every DevOps Engineer Should Know

By : Michael Levan
4.4 (5)
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50 Kubernetes Concepts Every DevOps Engineer Should Know

50 Kubernetes Concepts Every DevOps Engineer Should Know

4.4 (5)
By: Michael Levan

Overview of this book

Kubernetes is a trending topic among engineers, CTOs, CIOs, and other technically sound professionals. Due to its proliferation and importance for all cloud technologies, DevOps engineers nowadays need a solid grasp of key Kubernetes concepts to help their organization thrive. This book equips you with all the requisite information about how Kubernetes works and how to use it for the best results. You’ll learn everything from why cloud native is important to implementing Kubernetes clusters to deploying applications in production. This book takes you on a learning journey, starting from what cloud native is and how to get started with Kubernetes in the cloud, on-premises, and PaaS environments such as OpenShift. Next, you’ll learn about deploying applications in many ways, including Deployment specs, Ingress Specs, and StatefulSet specs. Finally, you’ll be comfortable working with Kubernetes monitoring, observability, and security. Each chapter of 50 Kubernetes Concepts Every DevOps Engineer Should Know is built upon the previous chapter, ensuring that you develop practical skills as you work through the code examples in GitHub, allowing you to follow along while giving you practical knowledge. By the end of this book, you’ll be able to implement Kubernetes in any environment, whether it’s an existing environment, a greenfield environment, or your very own lab running in the cloud or your home.
Table of Contents (14 chapters)
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1
Part 1: First 20 Kubernetes Concepts – In and Out of the Cloud
6
Part 2: Next 15 Kubernetes Concepts – Application Strategy and Deployments
9
Part 3: Final 15 Kubernetes Concepts – Security and Monitoring

Troubleshooting application deployments

Troubleshooting environments and applications typically always looks the same and follows a typical order:

  • When was the last deployment?
  • What has changed?
  • Look at the logs
  • Who can access the app and who cannot, if anyone at all?

With Kubernetes, it’s pretty similar when it comes to application troubleshooting. The usual workflow is as follows:

  1. Check the app itself running in the container.
  2. Check the overall health of the Pod(s).
  3. Check the Service or route.

With these three steps, you can usually get to the bottom of what’s happening because, in reality, there can’t be any other problems. It’s either that the app itself isn’t working, the Pod itself has an issue, or the service or route isn’t working as expected.

Although there could only be three potential problems at a high level, when you dive deeper into those problems, there could be various ways...

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50 Kubernetes Concepts Every DevOps Engineer Should Know
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