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

Chapter 6

  1. Token-based authentication enables static tokens to be used to identify the origin of requests in the cluster. Static tokens cannot be updated without restarting the API server and so should not be used.
  2. The NodeRestriction admission controller ensures that a kubelet can only modify the node and Pod objects for the node that it is running on.
  3. Pass --encryption-provider-config to the API server to ensure data is encrypted at rest in etcd.
  4. Security vulnerabilities in dnsmasq, performance issues in SkyDNS, and a single container instead of three for kube-dns to provide the same functionality.
  5. You can use kube-bench on an EKS cluster as follows:
    $ git clone : https://github.com/aquasecurity/kube-bench
$ kubectl apply -f job-eks.yaml