October 2021
Intermediate to advanced
192 pages
5h 59m
English
Content preview from Kubernetes Security and Observability
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Chapter 4. Workload Runtime Security
Note
This chapter talks about pod security policies (PSP), a feature that has been deprecated in Kubernetes v1.25 (October 2022) and replaced with pod security admission (PSA). We’ve left the sections of this chapter that discuss PSP intact, as we recognize that not all developers will be moving to v1.25 right away. For more information, see Kubernetes’s updated documentation on pod security policies.
Kubernetes’ default pod provisioning mechanism has a wide attack surface that can be used by adversaries to exploit the cluster or escape the container. In this chapter you will learn how to implement pod security policies (PSPs) to limit the attack surface of the pods and how to monitor processes (e.g., process privileges), file access, and runtime security for your workloads. Here are a few specifics of what we will discuss:
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We will cover the implementation details of PSPs, like pod security contexts, and also explain the limitations of PSPs. Note PSPs are deprecated as of Kubernetes v1.21; however, we will cover this topic in this chapter as we are aware that PSPs are widely used.
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We will discuss process monitoring, which focuses on the need for Kubernetes-native monitoring to detect suspicious activities. We will cover runtime monitoring and enforcement using kernel security features like seccomp, SELinux, and AppArmor to prevent containers from ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.