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)
Section 1: Introduction to Kubernetes
Section 2: Securing Kubernetes Deployments and Clusters
Section 3: Learning from Mistakes and Pitfalls


In this chapter, we discussed the importance of CVEs. These publicly known identifiers are important for cluster administrators, security researchers, and attackers. We discussed the important aspects of CVE entries, which are maintained by MITRE. We then looked at four well-known CVEs and discussed the issue and the mitigation strategy for each CVE. As a cluster administrator, upgrading the kubectl client and Kubernetes version should always be your first priority. However, adding mitigation strategies to detect and prevent exploits caused by similar issues that have not been reported publicly is equally important. Finally, we discussed an open source tool, kube-hunter, which can be used to periodically identify issues in your Kubernetes cluster. This removes the overhead of cluster administrators keeping a close eye on security advisories and announcements by Kubernetes.

Now, you should be able to understand the importance of publicly disclosed vulnerabilities and how...