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cilium-expert

Configure Cilium CNI, network policies, and Hubble observability for Kubernetes.

45|4|Updated Nov 25, 2025
Search Tags:#security#networking#kubernetes#observability#network policy#ebpf#cilium
One-click install
npx skills add https://github.com/martinholovsky/claude-skills-generator --skill cilium-expert
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: cilium-expert
Source: https://github.com/martinholovsky/claude-skills-generator/tree/main/skills/cilium-expert
Command: npx skills add https://github.com/martinholovsky/claude-skills-generator --skill cilium-expert

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses the complexity of configuring, securing, and optimizing Cilium, an eBPF-based networking solution for Kubernetes, ensuring robust and efficient cluster-wide network security and observability.

Core Features & Use Cases

  • CNI Configuration: Expert guidance on installing and configuring Cilium as the Kubernetes CNI.
  • Network Policies: Design and implement granular L3/L4/L7 network policies for zero-trust security.
  • Service Mesh: Leverage Cilium's native service mesh capabilities for mTLS and traffic management.
  • Observability: Utilize Hubble for deep network flow visibility, service maps, and troubleshooting.
  • Security Hardening: Implement encryption, segmentation, and threat detection.
  • Performance Optimization: Tune eBPF programs and policies for maximum efficiency.
  • Use Case: A DevOps engineer needs to implement strict network segmentation and mTLS encryption across microservices in a production Kubernetes cluster. This Skill provides step-by-step guidance and best practices for achieving this using Cilium.

Quick Start

Use the cilium-expert skill to implement a default-deny network policy for the 'production' namespace.

Frequently Asked Questions about cilium-expert

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I configure Cilium as the Kubernetes CNI for high-performance networking?▼

Configuring Cilium as the Kubernetes CNI involves installing the eBPF-based solution to manage cluster networking, replacing standard kube-proxy. This enables high-performance routing and forms the foundation for advanced network policy enforcement and observability.

What is the best way to implement zero-trust network policies across microservices?▼

Implementing zero-trust network policies is best achieved by designing granular L3/L4/L7 rules with Cilium. This restricts traffic flow between microservices, ensuring strict segmentation and robust security hardening across the Kubernetes cluster.

How does Hubble observability work for troubleshooting Kubernetes network flows?▼

Hubble observability works by leveraging eBPF to provide deep visibility into Kubernetes network flows and service maps. It enables efficient troubleshooting by transparently monitoring traffic without requiring sidecars or manual packet captures.

Can I use eBPF for transparent encryption and multi-cluster networking in Kubernetes?▼

You can use eBPF for transparent encryption and multi-cluster networking in Kubernetes through Cilium. It handles complex scenarios including cross-cluster connectivity and IPsec or WireGuard encryption without application code changes.

Does Cilium support native service mesh capabilities without sidecars?▼

Cilium supports native service mesh capabilities without sidecars by using eBPF. This allows you to leverage mTLS encryption and traffic management directly in the kernel, reducing overhead and simplifying deployment.

When should I tune eBPF programs for performance optimization in Kubernetes?▼

You should tune eBPF programs for performance optimization in Kubernetes when managing large-scale traffic or complex network policies. Tuning ensures maximum efficiency and prevents bottlenecks in packet processing across the cluster.

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