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Cloud-Native Development and Migration to Jakarta EE

You're reading from   Cloud-Native Development and Migration to Jakarta EE Transform your legacy Java EE project into a cloud-native application

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Product type Paperback
Published in Oct 2023
Publisher Packt
ISBN-13 9781837639625
Length 198 pages
Edition 1st Edition
Languages
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Authors (2):
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David Vlijmincx David Vlijmincx
Author Profile Icon David Vlijmincx
David Vlijmincx
Ron Veen Ron Veen
Author Profile Icon Ron Veen
Ron Veen
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Table of Contents (18) Chapters Close

Preface 1. Part 1: History of Java EE and Jakarta EE
2. Chapter 1: The History of Enterprise Java FREE CHAPTER 3. Chapter 2: Introducing the Cargo Tracker Application 4. Part 2: Modern Jakarta EE
5. Chapter 3: Moving from Java EE to Jakarta EE 6. Chapter 4: Modernizing Your Application with the Latest Features 7. Chapter 5: Making Your Application Testable 8. Part 3: Embracing the Cloud
9. Chapter 6: Introduction to Containers and Docker 10. Chapter 7: Meet Kubernetes 11. Chapter 8: What Is Cloud Native? 12. Chapter 9: Deploying Jakarta EE Applications in the Cloud 13. Chapter 10: Introducing MicroProfile 14. Index 15. Other Books You May Enjoy Appendix A: Java EE to Jakarta EE names
1. Appendix B: As a Service

Kubernetes architecture

The following is a diagram of the high configuration of Kubernetes. On the left, we can see the control plane, the part of Kubernetes that controls the scheduling, starting, and stopping of pods and services

Figure 7.1 – The components that make up Kubernetes

Figure 7.1 – The components that make up Kubernetes

The control plane has several components, which we will discuss in more detail in the subsections; they are as follows:

  • The Kubernetes Controller is where the main control loop of the application runs. This is the place where the actual state is monitored and compared against the desired state of your cluster and changes to the cluster are being made if required. The Kubernetes controller contains a number of different controllers, such as the Node Controller, Job Controller, and ServiceAccount Controller.
  • The Scheduler component watches over newly created pods that do not yet have a Node assigned to them. The Scheduler looks at the demands of the pod and...
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