You're reading from Learn Kubernetes Security Securely orchestrate, scale, and manage your microservices in Kubernetes deployments

Product type Paperback

Published in Jul 2020

Publisher Packt

ISBN-13 9781839216503

Length 330 pages

Edition 1st Edition

Languages

C++

Tools

Kubernetes

Concepts

Cloud Security

Authors (2):

Pranjal Jumde

Kaizhe Huang

View More author details

Table of Contents (19) Chapters

Preface

1. Section 1: Introduction to Kubernetes

2. Chapter 1: Kubernetes Architecture FREE CHAPTER

3. Chapter 2: Kubernetes Networking

4. Chapter 3: Threat Modeling

5. Chapter 4: Applying the Principle of Least Privilege in Kubernetes

6. Chapter 5: Configuring Kubernetes Security Boundaries

7. Section 2: Securing Kubernetes Deployments and Clusters

8. Chapter 6: Securing Cluster Components

9. Chapter 7: Authentication, Authorization, and Admission Control

10. Chapter 8: Securing Kubernetes Pods

11. Chapter 9: Image Scanning in DevOps Pipelines

12. Chapter 10: Real-Time Monitoring and Resource Management of a Kubernetes Cluster

13. Chapter 11: Defense in Depth

14. Section 3: Learning from Mistakes and Pitfalls

15. Chapter 12: Analyzing and Detecting Crypto-Mining Attacks

16. Chapter 13: Learning from Kubernetes CVEs

17. Assessments

18. Other Books You May Enjoy

Leave a review - let other readers know what you think

Communicating between pods

Kubernetes pods are dynamic beings and ephemeral. When a set of pods is created from a deployment or a DaemonSet, each pod gets its own IP address; however, when patching happens or a pod dies and restarts, pods may have a new IP address assigned. This leads to two fundamental communication problems, given a set of pods (frontend) needs to communicate to another set of pods (backend), detailed as follows:

Given that the IP addresses may change, what are the valid IP addresses of the target pods?
Knowing the valid IP addresses, which pod should we communicate to?

Now, let's jump into the Kubernetes service as it is the solution for these two problems.

The Kubernetes service

The Kubernetes service is an abstraction of a grouping of sets of pods with a definition of how to access the pods. The set of pods targeted by a service is usually determined by a selector based on pod labels. The Kubernetes service also gets an IP address...