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kubeovn/kube-ovn · source
Snapshot 0 · 2026-11-04T12:47:25Z · Go · Apache-2.0
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a5b1203321349a02a7b913d8ace550b2bb4b186bb02cdc6c22bb8180b638597dGitHub description at capture
A Bridge between SDN and Cloud Native (Project under CNCF)
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<img src="https://raw.githubusercontent.com/cncf/artwork/main/projects/kube-ovn/horizontal/color/kube-ovn-horizontal-color.svg" alt="kube_ovn_logo" width="500"/> [](https://kube-ovn.io/) [](https://github.com/kubeovn/kube-ovn/blob/master/LICENSE) [](https://github.com/kubeovn/kube-ovn/releases) [](https://img.shields.io/docker/pulls/kubeovn/kube-ovn)  [](https://goreportcard.com/report/github.com/kubeovn/kube-ovn) Kube-OVN, a [CNCF Sandbox Project](https://www.cncf.io/sandbox-projects/), integrates OVN-based Network Virtualization with Kubernetes. It provides enhanced support for KubeVirt and unique Multi-Tenancy capabilities. ## Network Topology  ## Features - **VPC Support**: Multi-tenant network with independent address spaces, where each tenant has its own network infrastructure such as eips, nat gateways, security groups and loadbalancers. - **Namespaced Subnets**: Each Namespace can have a unique Subnet (backed by a Logical Switch). Pods within the Namespace will have IP addresses allocated from the Subnet. It's also possible for multiple Namespaces to share a Subnet. - **Vlan/Underlay Support**: In addition to overlay network, Kube-OVN also supports underlay and vlan mode network for better performance and direct connectivity with physical network. - **Static IP Addresses for Workloads**: Allocate random or static IP addresses to workloads. - **Seamless VM LiveMigration**: Live migrate KubeVirt vm without network interruption. - **Non-Primary CNI Mode**: Kube-OVN can work as a secondary CNI alongside other primary CNIs (Cilium, Calico, etc.), providing additional network interfaces and advanced networking features via Network Attachment Definitions (NADs). - **Multi-Cluster Network**: Connect different Kubernetes/Openstack clusters into one L3 network. - **TroubleShooting Tools**: Handy tools to diagnose, trace, monitor and dump container network traffic to help troubleshoot complicate network issues. - **Prometheus & Grafana Integration**: Exposing network quality metrics like pod/node/service/dns connectivity/latency in Prometheus format. - **ARM Support**: Kube-OVN can run on x86_64 and arm64 platforms. - **Subnet Isolation**: Can configure a Subnet to deny any traffic from source IP addresses not within the same Subnet. Can whitelist specific IP addresses and IP ranges. - **Network Policy**: Implementing networking.k8s.io/NetworkPolicy API by high performance ovn ACL. - **DualStack IP Support**: Pod can run in IPv4-Only/IPv6-Only/DualStack mode. - **Pod NAT and EIP**: Manage the pod external traffic and external ip like tradition VM. - **IPAM for Multi NIC**: A cluster-wide IPAM for CNI plugins other than Kube-OVN, such as macvlan/vlan/host-device to take advantage of subnet and static ip allocation functions in Kube-OVN. - **Dynamic QoS**: Configure Pod/Gateway Ingress/Egress traffic rate/priority/loss/latency on the fly. - **Embedded Load Balancers**: Replace kube-proxy with the OVN embedded high performance distributed L2 Load Balancer. - **Distributed Gateways**: Every Node can act as a Gateway to provide external network connectivity. - **Namespaced Gateways**: Every Namespace can have a dedicated Gateway for Egress traffic. - **Direct External Connectivity**: Pod IP can be exposed to external network directly. - **BGP Support**: Pod/Subnet IP can be exposed to external by BGP router protocol. - **Traffic Mirror**: Duplicated container network traffic for monitoring, diagnosing and replay. - **Hardware Offload**: Boost network performance and save CPU resource by offloading OVS flow table to hardware. ## Quick Start Kube-OVN is easy to install, please refer to the [Installation Guide](https://kubeovn.github.io/docs/stable/en/start/one-step-install/). ## Documents - [CNI Selection Recommendations](https://kubeovn.github.io/docs/stable/en/#cni-selection-recommendations) - [Getting Start](https://kubeovn.github.io/docs/stable/en/start/prepare/) - [KubeVirt Usage](https://kubeovn.github.io/docs/stable/en/kubevirt/static-ip/) - [VPC Network](https://kubeovn.github.io/docs/stable/en/vpc/vpc/) - [User Guide](https://kubeovn.github.io/docs/stable/en/guide/subnet/) - [Operations](https://kubeovn.github.io/docs/stable/en/ops/kubectl-ko/) - [Advanced Usage](https://kubeovn.github.io/docs/stable/en/advance/multi-nic/) - [Reference](https://kubeovn.github.io/docs/stable/en/reference/architecture/) ## Contribution We are looking forward to your PR! - [Development Guide](https://kubeovn.github.io/docs/en/reference/dev-env/) - [Architecture Guide](https://kubeovn.github.io/docs/en/reference/architecture/) ## Community The Kube-OVN community is waiting for your participation! - 🔗 Follow us on [Linkedin](https://www.linkedin.com/company/kube-ovn/) - 💬 Chat with us on [Slack](https://cloud-native.slack.com/archives/C0AQMHUDX39) ## Adopters A list of adopters and use cases can be found in [USERS.md](USERS.md)