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 6: Securing Cluster Components

In previous chapters, we looked at the architecture of a Kubernetes cluster. A Kubernetes cluster consists of master components—including kube-apiserver, etcd, kube-scheduler, CoreDNS, kube-controller-manager, and cloud-controller-manager—and node components, including kubelet, kube-proxy, and container-runtime. Master components are responsible for cluster management. They form the control plane of the cluster. Node components, on the other hand, are responsible for the functioning of pods and containers on the node.

In Chapter 3, Threat Modeling, we briefly discussed that components in a Kubernetes cluster need to be configured to ensure the security of the cluster. A compromise of any cluster component can cause a data breach. Misconfiguration of environments is one of the primary reasons for data breaches in traditional or microservices environments. It is important to understand the configurations for each component and...