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This article explains how Kube-OVN leverages OVN configuration parameters to enable non‑intrusive live migration for KubeVirt virtual machines, describes the underlying principle, provides usage instructions, and presents test results showing a drastic reduction in packet loss and migration downtime.
This guide explains how to use KubeVirt 1.4's managedTap feature to configure IPv4/IPv6 dual‑stack networking in bridge mode without modifying source code, covering subnet preparation, plugin registration, and virtual‑machine definition with example YAML and kubectl commands.
This article reviews a technical sharing session that explains the characteristics, advantages and drawbacks of Overlay and Underlay networking, discusses hybrid network challenges and Multus modes, and presents Kube‑OVN’s solution for seamless integration of both network types in Kubernetes environments.
This guide walks through deploying a lightweight K3s cluster unified with virtual machines using Kube‑OVN for multi‑tenant VPC isolation, configuring shared internet via VPN, installing cloud‑hypervisor, setting up Multus for multi‑NIC containers, and provisioning a management web‑app with Tomcat and OpenVPN, providing a complete cloud‑native lab environment.
This article explains how the integration of sriov-network-operator and Kube-OVN automates the complex configuration and persistence of RDMA and SR‑IOV in Kubernetes, enabling high‑availability, multi‑tenant networking for AI distributed training workloads.
This guide explains how to enable Kube-OVN's routed subnet mode, detailing prerequisites, disabling NAT, adding return routes, and adjusting gateway settings so that pod IPs can communicate directly with external networks without underlay support.
This guide explains how to use Kube-OVN to connect OpenStack virtual machines and Kubernetes containers by configuring cluster interconnect or shared OVN modes, covering prerequisites, OVN‑IC database deployment, Kubernetes and OpenStack side settings, and example manifests for creating Pods in OpenStack subnets.
This guide explains how to combine Kube-OVN with OVS‑DPDK to provide DPDK‑type network interfaces for KubeVirt virtual machines, covering prerequisites, NIC driver configuration, node labeling, OVS‑DPDK configuration, Kube‑OVN installation with DPDK support, and VM deployment steps.
The article introduces the F5 Cloud Egress Services (CES) solution, detailing its architecture, component composition, policy scopes, tenant isolation, and the extensive capabilities it provides for dynamic egress traffic control, security, and observability within Kubernetes clusters using Kube‑OVN.
This guide explains how to enhance Kube‑OVN with Cilium’s eBPF‑based networking and security features by using CNI chaining, covering prerequisites, configuration changes, Helm deployment steps, verification commands, and useful reference links for a complete cloud‑native networking solution.
This guide explains how to download, compile, and install the Kube-OVN FastPath kernel module on CentOS, showing steps for both 3.x and 4.x kernels, how to verify the installation with dmesg, and notes on module loading and removal.
This article explains how Kube-OVN extends its IP address management to other CNI plugins, supports multi‑NIC scenarios, and provides step‑by‑step instructions with YAML examples for installing Kube-OVN, configuring NetworkAttachmentDefinitions, creating Subnets, and deploying Pods with static or dynamic IPs.
This article analyses the rapid evolution of cloud‑native networking, identifies key challenges across traditional, data‑center, edge, multi‑cluster, financial, and telecom scenarios, and presents open‑source and commercial solutions such as Kube‑OVN, Underlay networks, flexible IPAM, and hardware‑software acceleration.
This article explains how Kube-OVN implements security groups and port security for Kubernetes pods by leveraging OVN port groups, address sets, and ACLs, detailing the CRD design, annotation usage, and the workflow that synchronizes pod network interfaces with security policies.
This article explains how the Kube-OVN controller watches pod events, queues them, and uses functions like handleAddPod, getPodKubeovnNets, and getPodAttachmentNet to allocate and release pod IP/MAC addresses while creating OVN ports and routes, enhancing Kubernetes networking security and operability.
This article explains how to use Vagrant and VirtualBox to create a reproducible development and testing environment for the Kube-OVN Kubernetes CNI project, including Vagrantfile configuration, provisioning scripts for Docker, Kubernetes tools, Go, and steps to compile, test, and run Kube-OVN with Kind clusters.
This article explains how the kube-ovn-cni component functions as a CNI plugin in Kubernetes, detailing its cmdAdd interface, interaction with the kube-ovn daemon, creation of veth pairs, OVS bridge integration, and network namespace configuration to manage pod network interfaces securely and efficiently.
This article explains how Kube-OVN leverages OVN/OVS to provide pod port security and OpenStack‑style security groups through custom CRDs, annotations, address sets, and ACL rules, detailing the underlying mechanisms and workflow for managing network security in Kubernetes.
This article explains the challenges of container networking in banks, especially under a two‑site‑three‑center architecture, and provides practical guidance on using underlay and overlay approaches, Kube‑OVN solutions, and best‑practice recommendations to achieve high‑availability, high‑concurrency, and high‑performance cloud‑native networks.
This article explains the kube-ovn-cni component of the Kube-OVN project, detailing the CNI workflow, the cmdAdd interface, daemon handling, and the configureNic function that together create and configure pod network interfaces within a Kubernetes cluster.