# Kube-OVN Kube-OVN integrates the OVN-based Network Virtualization with Kubernetes. It offers an advanced Container Network Fabric for Enterprises. For more information please check [Kube-OVN documentation](https://github.com/alauda/kube-ovn) **Warning:** Kernel version (`cat /proc/version`) needs to be different from `3.10.0-862` or kube-ovn won't start and will print this message: ```bash kernel version 3.10.0-862 has a nat related bug that will affect ovs function, please update to a version greater than 3.10.0-898 ``` ## How to use it Enable kube-ovn in `group_vars/k8s_cluster/k8s_cluster.yml` ```yml ... kube_network_plugin: kube-ovn ... ``` ## Verifying kube-ovn install Kube-OVN run ovn and controller in `kube-ovn` namespace * Check the status of kube-ovn pods ```ShellSession # From the CLI kubectl get pod -n kube-ovn # Output NAME READY STATUS RESTARTS AGE kube-ovn-cni-49lsm 1/1 Running 0 2d20h kube-ovn-cni-9db8f 1/1 Running 0 2d20h kube-ovn-cni-wftdk 1/1 Running 0 2d20h kube-ovn-controller-68d7bb48bd-7tnvg 1/1 Running 0 2d21h ovn-central-6675dbb7d9-d7z8m 1/1 Running 0 4d16h ovs-ovn-hqn8p 1/1 Running 0 4d16h ovs-ovn-hvpl8 1/1 Running 0 4d16h ovs-ovn-r5frh 1/1 Running 0 4d16h ``` * Check the default and node subnet ```ShellSession # From the CLI kubectl get subnet # Output NAME PROTOCOL CIDR PRIVATE NAT join IPv4 100.64.0.0/16 false false ovn-default IPv4 10.16.0.0/16 false true ```