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 8: Securing Kubernetes Pods

Even though a pod is the most fine-grained unit that serves as a placeholder to run microservices, securing Kubernetes pods is a vast topic as it should cover the entire DevOps flow: build, deployment, and runtime.

In this chapter, we choose to narrow our focus to the build and runtime stages. To secure Kubernetes pods in the build stage, we will talk about how to harden a container image and configure the security attributes of pods (or pod templates) to reduce the attack surface. Although some of the security attributes of workloads, such as AppArmor and SELinux labels, take effect in the runtime stage, security control has already been defined for the workload. To clarify matters further, we're trying to secure Kubernetes workloads by configuring the runtime effect security attributes in the build stage. To secure Kubernetes pods in the runtime stage, we will introduce a PodSecurityPolicy with examples along with the facilitating tool...