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

Introducing container images and vulnerabilities

Image scanning can be used to identify vulnerabilities or violations of best practices (depending on the image scanner's capability) inside an image. Vulnerabilities may come from application libraries or tools inside the image. Before we jump into image scanning, it would be good to know a little bit more about container images and vulnerabilities.

Container images

A container image is a file that bundles the microservice binary, its dependency, configurations of the microservice, and so on. Nowadays, application developers not only write code to build microservices but also need to build an image to containerize an application. Sometimes application developers may not follow the security best practices to write code or download libraries from uncertified sources. This means vulnerabilities could potentially exist in your own application or the dependent packages that your application relies on. Still, don't forget...