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Installation

Kube-OVN includes two parts:

  • Native OVS and OVN components
  • Controller and CNI plugins that integrate OVN with Kubernetes

To install

  1. Add the following label to the Node which will host the OVN DB and the OVN Control Plane:

    kubectl label node <Node on which to deploy OVN DB> kube-ovn/role=master

  2. Install native OVS and OVN components:

    kubectl apply -f https://raw.githubusercontent.com/alauda/kube-ovn/v0.5.0/yamls/ovn.yaml

  3. Install the Kube-OVN Controller and CNI plugins:

    kubectl apply -f https://raw.githubusercontent.com/alauda/kube-ovn/v0.5.0/yamls/kube-ovn.yaml

That's all! You can now create some pods and test connectivity.

For high-available ovn db, see high available

More Configuration

Controller Configuration

    # Default Logical Switch
    --default-ls: The default logical switch name, default: ovn-default
    --default-cidr: Default CIDR for Namespaces with no logical switch annotation, default: 10.16.0.0/16
    --default-gateway: Default gateway for default-cidr, default the first ip in default-cidr
    --node-switch-cidr: The CIDR for the Node switch, default: 100.64.0.0/16
    --default-exclude-ips: Exclude ips in default switch, default equals to gateway address
    
    # Node Switch
    --node-switch: The name of node gateway switch which help node to access pod network, default: join
    --node-switch-cidr: The cidr for node switch, default: 100.64.0.0/16
    --node-switch-gateway: The gateway for node switch, default the first ip in node-switch-cidr
    
    # LoadBalancer
    --cluster-tcp-loadbalancer: The name for cluster tcp loadbalancer, default cluster-tcp-loadbalancer
    --cluster-udp-loadbalancer: The name for cluster udp loadbalancer, default cluster-udp-loadbalancer
    
    # Router
    --cluster-router: The router name for cluster router, default: ovn-cluster
    
    # Misc
    --worker-num: The parallelism of each worker, default: 3
    --kubeconfig: Path to kubeconfig file with authorization and master location information. If not set use the inCluster token

Daemon Configuration

    --iface: The iface used to inter-host pod communication, default: the default route iface
    --mtu: The MTU used by pod iface, default: iface MTU - 58
    --enable-mirror: Enable traffic mirror, default: false
    --mirror-iface: The mirror nic name that will be created by kube-ovn, default: mirror0
    --service-cluster-ip-range: The kubernetes service cluster ip range, default: 10.96.0.0/12
    --kubeconfig: Path to kubeconfig file with authorization and master location information. If not set use the inCluster token

To uninstall

  1. Remove Kubernetes resources:

    wget https://raw.githubusercontent.com/alauda/kube-ovn/v0.5.0/dist/images/cleanup.sh
bash cleanup.sh

  2. Delete OVN/OVS DB and config files on every Node:

    rm -rf /var/run/openvswitch
rm -rf /etc/origin/openvswitch/
rm -rf /etc/openvswitch

  3. Reboot the Node to remove ipset/iptables rules and nics.