Book Image

Learn Kubernetes Security

By : Kaizhe Huang, Pranjal Jumde
5 (1)
Book Image

Learn Kubernetes Security

5 (1)
By: Kaizhe Huang, Pranjal Jumde

Overview of this book

Kubernetes is an open source orchestration platform for managing containerized applications. Despite widespread adoption of the technology, DevOps engineers might be unaware of the pitfalls of containerized environments. With this comprehensive book, you'll learn how to use the different security integrations available on the Kubernetes platform to safeguard your deployments in a variety of scenarios. Learn Kubernetes Security starts by taking you through the Kubernetes architecture and the networking model. You'll then learn about the Kubernetes threat model and get to grips with securing clusters. Throughout the book, you'll cover various security aspects such as authentication, authorization, image scanning, and resource monitoring. As you advance, you'll learn about securing cluster components (the kube-apiserver, CoreDNS, and kubelet) and pods (hardening image, security context, and PodSecurityPolicy). With the help of hands-on examples, you'll also learn how to use open source tools such as Anchore, Prometheus, OPA, and Falco to protect your deployments. By the end of this Kubernetes book, you'll have gained a solid understanding of container security and be able to protect your clusters from cyberattacks and mitigate cybersecurity threats.
Table of Contents (19 chapters)
1
Section 1: Introduction to Kubernetes
7
Section 2: Securing Kubernetes Deployments and Clusters
14
Section 3: Learning from Mistakes and Pitfalls

Summary

In this chapter, we looked at different security-sensitive configurations for each master and node component: kube-apiserver, kube-scheduler, kube-controller-manager, kubelet, CoreDNS, and etcd. We learned how each component can be secured. By default, components might not follow all the security best practices, so it is the responsibility of the cluster administrators to ensure that the components are secure. Finally, we looked at kube-bench, which can be used to understand the security baseline for your running cluster.

It is important to understand these configurations and ensure that the components follow these checklists to reduce the chance of a compromise.

In the next chapter, we'll look at authentication and authorization mechanisms in Kubernetes. We briefly talked about some admission controllers in this chapter. We'll dive deep into different admission controllers and, finally, talk about how they can be leveraged to provide a finer-grained access...