Kubernetes Security Hardening: Production-Ready Configuration

Secure your Kubernetes clusters with RBAC, network policies, pod security, and runtime protection for production workloads.

Core Security Controls

Cluster Hardening

• Enable RBAC
• Restrict API access
• Use network policies
• Enable audit logging
• Secure etcd

Pod Security

• Run as non-root
• Read-only root filesystem
• Drop capabilities
• Use Pod Security Standards
• Resource limits

Network Security

• Network segmentation
• Service mesh (Istio/Linkerd)
• Ingress security
• TLS encryption

Image Security

• Scan for vulnerabilities
• Use minimal base images
• Sign and verify images
• Private registries
• Regular updates

Runtime Security

• Falco for threat detection
• OPA for policy enforcement
• Admission controllers
• Runtime monitoring

Secrets Management

• External secrets operators
• HashiCorp Vault integration
• Encrypt secrets at rest
• Rotate credentials

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