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 4: Applying the Principle of Least Privilege in Kubernetes

The principle of least privilege states that each component of an ecosystem should have minimal access to data and resources for it to function. In a multitenant environment, multiple resources can be accessed by different users or objects. The principle of least privilege ensures that damage to the cluster is minimal if users or objects misbehave in such environments.

In this chapter, we will first introduce the principle of least privilege. Given the complexity of Kubernetes, we will first look into the Kubernetes subjects, and then the privileges available for the subjects. Then, we will talk about the privileges of Kubernetes objects and possible ways to restrict them. The goal of this chapter is to help you understand a few critical concepts, such as the principle of least privilege and Role-Based Access Control (RBAC). In this chapter, we will talk about different Kubernetes objects, such as namespaces, service...