KubeArmor: Runtime Security Enforcement for Cloud Workloads
Shriira Press
A practical guide to runtime security enforcement for Kubernetes and cloud workloads with KubeArmor.
Welcome to KubeArmor: Runtime Security Enforcement for Cloud Workloads.
KubeArmor is a cloud-native runtime security engine that restricts what a container, pod, or host is actually allowed to do while it runs — which processes may execute, which files may be read or written, and which network operations are permitted. It does this at the kernel level, using Linux Security Modules such as AppArmor, SELinux, and BPF-LSM together with eBPF, so enforcement happens inside the kernel rather than in a sidecar that can be bypassed. This book begins with the problem runtime security solves and where it sits relative to scanning and admission control, then explains what KubeArmor is and the kernel technologies it builds on. From there it works through the architecture — the daemonset, operator, controller, and relay — before turning to the KubeArmorPolicy and KubeArmorHostPolicy custom resources, the visibility and telemetry pipeline, and the hardening and compliance tooling. The final chapter is about running KubeArmor well: rolling out policies safely, integrating with the wider ecosystem, and adopting a least-permissive posture without breaking your applications.
This title is part of the ShriIra library and is free to read in full, right here — our small contribution to making world-class knowledge easy to reach.
A note on reading it: open the Contents menu at the top of the reader to jump between chapters, use the Aa menu to set a comfortable text size, theme (light, sepia, or night), and single- or two-page layout. Your place is saved automatically, so you can always pick up where you left off.
We hope it serves you well.
— Shriira Press