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

Scanning for known vulnerabilities using kube-hunter

Security advisories and announcements (https://kubernetes.io/docs/reference/issues-security/security/) published by Kubernetes are the best way to keep track of new security vulnerabilities found in Kubernetes. The announcements and advisory emails can get a bit overwhelming and it's always possible to miss an important vulnerability. To avoid these situations, a tool that periodically checks the cluster for any known CVEs comes to the rescue. kube-hunter is an open source tool that is developed and maintained by Aqua that helps identify known security issues in your Kubernetes cluster.

The steps to set up kube-hunter are as follows:

  1. Clone the repository:
    $git clone https://github.com/aquasecurity/kube-hunter
  2. Run the kube-hunter pod in your cluster:
    $ ./kubectl create -f job.yaml
  3. View the logs to find any issues with your cluster:
    $ ./kubectl get pods
    NAME         ...