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 1

  1. Scaling, operational cost, and longer release cycle.
  2. Master components run on the master node. These components are responsible for the management of the worker nodes. The master components include kube-apiserver, etcd, kube-scheduler, kube-controller-manager, cloud-controller-manager, and dns-server.
  3. Kubernetes Deployments help scale pods up/down based on labels and selectors. Deployments encapsulate replica sets and pods. The YAML spec for a Deployment consists of number of instances of pods and template, which is identical to a Pod specification.
  4. OpenShift, K3S, and Minikube.
  5. Kubernetes environments are highly configurable and are composed of a myriad of components. Configurability and complexity with insecure defaults is a big cause of concern. Additionally, the compromise of master components in cluster is the easiest way to cause a breach.