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)
1
Section 1: Introduction to Kubernetes
7
Section 2: Securing Kubernetes Deployments and Clusters
14
Section 3: Learning from Mistakes and Pitfalls

Kubernetes security domains

A Kubernetes cluster can be broadly split into three security domains:

  • Kubernetes master components: Kubernetes master components define the control plane for the Kubernetes ecosystem. The master components are responsible for decisions required for the smooth operation of the cluster, such as scheduling. Master components include kube-apiserver, etcd, the kube-controller manager, DNS server, and kube-scheduler. A breach in the Kubernetes master components can compromise the entire Kubernetes cluster.
  • Kubernetes worker components: Kubernetes worker components are deployed on every worker node and ensure that Pods and containers are running nicely. Kubernetes worker components use authorization and TLS tunneling for communicating with the master components. A cluster can function with compromised worker components. It is analogous to a rogue node within the environment, which can be removed from the cluster when identified.
  • Kubernetes objects...