k8s-security-policies

# Kubernetes Security Policies Comprehensive guide for implementing NetworkPolicy, PodSecurityPolicy, RBAC, and Pod Security Standards in Kubernetes. ## Purpose Implement defense-in-depth security for Kubernetes clusters using network policies, pod security standards, and RBAC. ## When to Use This Skill - Implement network segmentation - Configure pod security standards - Set up RBAC for least-privilege access - Create security policies for compliance - Implement admission control - Secure multi-tenant clusters ## Pod Security Standards ### 1. Privileged (Unrestricted) ```yaml apiVersion: v1 kind: Namespace metadata: name: privileged-ns labels: pod-security.kubernetes.io/enforce: privileged pod-security.kubernetes.io/audit: privileged pod-security.kubernetes.io/warn: privileged ``` ### 2. Baseline (Minimally restrictive) ```yaml apiVersion: v1 kind: Namespace metadata: name: baseline-ns labels: pod-security.kubernetes.io/enforce: baseline pod-security.kubernetes.io/audit: baseline pod-security.kubernetes.io/warn: baseline ``` ### 3. Restricted (Most restrictive) ```yaml apiVersion: v1 kind: Namespace metadata: name: restricted-ns labels: pod-security.kubernetes.io/enforce: restricted pod-security.kubernetes.io/audit: restricted pod-security.kubernetes.io/warn: restricted ``` ## Network Policies ### Default Deny All ```yaml apiVersion: networking.k8s.io/v1 kind: NetworkPolicy metadata: name: default-deny-all na...