Cni on Support Tools

Cilium eBPF Networking Deep Dive: Advanced Kubernetes CNI Implementation

Tue, 12 May 2026 00:00:00 -0500

Cilium represents a paradigm shift in Kubernetes networking by leveraging eBPF (extended Berkeley Packet Filter) technology to provide high-performance, secure, and observable networking capabilities. This comprehensive guide explores advanced Cilium implementation patterns, performance optimization techniques, and enterprise-grade configurations for production Kubernetes clusters.

Calico Network Policy Optimization: Advanced Security and Performance Tuning

Thu, 07 May 2026 00:00:00 -0500

Calico has become the de facto standard for Kubernetes network policy enforcement, offering powerful security controls combined with high-performance networking. This comprehensive guide explores advanced Calico optimization techniques, including policy tiering, eBPF dataplane configuration, and enterprise-grade security patterns for production environments.

RKE2 the Hard Way: Part 8 – Installing Cilium CNI

Tue, 01 Apr 2025 00:00:00 +0000

Part 8 – Installing Cilium CNI

In this part of the “RKE2 the Hard Way” training series, we will install and configure the Cilium CNI (Container Network Interface). Cilium is a powerful, open-source CNI solution that provides advanced networking, security, and observability features for Kubernetes clusters.

At this point in our tutorial series, we have:

Set up all the core Kubernetes components (etcd, kube-apiserver, kube-controller-manager, kube-scheduler)
Configured kubelet and kube-proxy on our nodes

However, our cluster network is not yet functional for pod-to-pod communication. The CNI plugin is essential for implementing the Kubernetes networking model, which requires that:

How to Configure Network Interfaces in K3s Using NMState and Multus CNI

Sat, 01 Mar 2025 00:00:00 -0500

Managing network interfaces in Kubernetes can be challenging, especially when dealing with multiple networks or complex configurations. This comprehensive guide demonstrates how to use the NMState Operator and Multus CNI in K3s to implement advanced networking configurations, create network bridges, and manage multiple network interfaces effectively.

CNI Deep Dive: Architecture and Implementation

Wed, 01 Jan 2025 00:00:00 -0500

This guide provides a detailed exploration of Container Network Interface (CNI) architecture, implementation details, and internal workings. Understanding these concepts is crucial for advanced networking configurations and troubleshooting.

CNI Implementation Lab Guide

Wed, 01 Jan 2025 00:00:00 -0500

This hands-on lab guide walks through the implementation and testing of different CNI plugins in a Kubernetes environment. You’ll learn how to deploy, configure, and troubleshoot various CNI solutions.

Container Network Security

Wed, 01 Jan 2025 00:00:00 -0500

Container networking introduces unique security challenges that require specific approaches and tools. This guide covers essential concepts and best practices for securing container networks.

Understanding Container Network Interface (CNI)

Wed, 01 Jan 2025 00:00:00 -0500

Container Network Interface (CNI) is a specification and set of libraries for configuring network interfaces in Linux containers. This guide explores different CNI plugins, their architectures, and how to choose the right one for your environment.

Benchmarking Kubernetes CNI Plugins on 40Gbit/s Networks

Wed, 30 Oct 2024 10:00:00 -0500

Introduction

Understanding network performance within a Kubernetes cluster is critical for scaling applications efficiently. With a growing array of Container Network Interface (CNI) plugins available, finding the right one for your workloads can be challenging. This post covers the latest benchmark results of CNI plugins, leveraging Kubernetes 1.26 with RKE2 on Ubuntu 22.04, and tests conducted over 40Gbit/s networks.

Why Benchmark Kubernetes CNIs?

The networking layer is integral to any Kubernetes cluster, as it manages pod-to-pod communication and ensures traffic flows seamlessly between services. Selecting a CNI plugin impacts cluster performance, resource consumption, and even energy efficiency. This benchmark provides insights into how different CNI configurations perform in real-world scenarios, including encryption with WireGuard, advanced routing with eBPF, and more.