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

Monitoring resources in Kubernetes

As we discussed earlier, resource monitoring is an essential step for ensuring the availability of your services in your cluster. Resource monitoring uncovers early signs or symptoms of service unavailability in your clusters. Resource monitoring is often complemented with alert management to ensure that stakeholders are notified as soon as any problems, or symptoms associated with any problems, in the cluster are observed.

In this section, we first look at some built-in monitors provided by Kubernetes, including Kubernetes Dashboard and Metrics Server. We look at how we can set it up and discuss how to use these tools efficiently. Next, we look at some open source tools that can plug into your Kubernetes cluster and provide far more in-depth insight than the built-in tools.

Built-in monitors

Let's look at some tools provided by Kubernetes that are used for monitoring Kubernetes resources and objects – Metrics Server and Kubernetes...