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

Chapter 11: Defense in Depth

Defense in depth is an approach in cybersecurity that applies multiple layers of security controls to protect valuable assets. In a traditional or monolithic IT environment, we can list quite a few: authentication, encryption, authorization, logging, intrusion detection, antivirus, a virtual private network (VPN), firewalls, and so on. You may find that these security controls also exist in the Kubernetes cluster (and they should).

We've discussed topics such as authentication, authorization, admission controllers, securing Kubernetes components, securing a configuration, hardening images, and Kubernetes workloads in the previous chapters. All these build up different security control layers to protect your Kubernetes cluster. In this chapter, we're going to discuss topics that build up additional security control layers, and these are most related to runtime defense in a Kubernetes cluster. These are the questions we're going to address...