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 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.
China Unicom’s cloud‑native platform underwent a five‑month, multi‑data‑center upgrade that replaced its legacy virtual network with an OVN‑OVS‑smart‑NIC SDN control plane, delivering advanced scalability, high performance, and zero‑fault online migration for over 1,300 business applications.
This guide presents Kube-OVN performance benchmarks, explains the testing environment and qperf commands, and provides step‑by‑step data‑plane optimization techniques—including CPU mode, NIC queue tuning, tuned profiles, interrupt binding, OVN LB disabling, FastPath module, OVS kernel compilation, and STT tunnel activation—to help administrators achieve lower latency and higher throughput in Kubernetes clusters.
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 Kube-OVN extends KubeVirt networking by providing fixed and stable VM IP addresses, multi‑tenant VPC/Subnet isolation, live‑migration IP preservation, and high‑performance SR‑IOV/OVS‑DPDK acceleration, along with practical configuration examples and reference links.
The article presents the launch of Kube-OVN 1.0 GA, shares findings from a 158‑respondent survey on container network usage, outlines current network solutions and future feature demands, and provides a detailed Q&A from the online webinar for practitioners interested in Kubernetes cloud‑native networking.
Kube-OVN 0.9.0 introduces enhanced monitoring, a five‑fold controller throughput boost, numerous stability fixes, reduced privileged container usage, and additional networking capabilities, while providing detailed update information and contact resources for the open‑source Kubernetes network project.
Kube-OVN v0.8.0 adds a high‑availability active‑passive gateway, enhanced monitoring via a kubectl plugin and Prometheus‑exposed pinger, automatic port‑security, hostport support, and upgrades to OVN, OVS, and Go, while continuing to bring OpenStack‑grade networking features to Kubernetes.
This article explains the practical motivations behind creating Kube-OVN, outlines its design principles, describes its overall architecture and network model, and details key features such as subnet management, IP allocation, QoS, gateway handling, traffic mirroring, and future development plans.
Kube-OVN 0.5 introduces full Kubernetes NetworkPolicy support via Openflow, customizable container interfaces and MTU, automatic system parameter tuning, auto‑computed default gateways, and additional CLI options, while its open‑source design brings comprehensive OVN‑based networking features to Kubernetes across diverse platforms.
This article reviews the shortcomings of Kubernetes networking, explains the capabilities of OVS and OVN as unified solutions, maps OVN abstractions to Kubernetes concepts, and outlines future directions for enhancing cloud‑native network functionality, followed by an extensive Q&A session.
