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 security boundaries. Understanding the security domains and security boundaries within the Kubernetes ecosystem helps administrators understand the blast radius of an attack and have mitigation strategies in place to limit the damage caused in the event of an attack. Knowing Kubernetes entities is the starting point of fortifying security boundaries. Knowing the security boundaries built into the system layer with Linux namespaces and capabilities is the next step. Last but not least, understanding the power of network policies is also critical to build security segmentation into microservices.

After this chapter, you should grasp the concept of the security domain and security boundaries. You should also know the security domains, common entities in Kubernetes, as well as the security boundaries built within or around Kubernetes entities. You should know the importance of using built-in security features such as PodSecurityPolicy...