OVN
Last updated 9 months ago
ovn-kubernetes 提供了一个ovs OVN 网络插件，支持 underlay 和 overlay 两种模式。
underlay：容器运行在虚拟机中，而ovs则运行在虚拟机所在的物理机上，OVN将容器网络和虚拟机网络连接在一起
overlay：OVN通过logical overlay network连接所有节点的容器，此时ovs可以直接运行在物理机或虚拟机上
# start ovn/usr/share/openvswitch/scripts/ovn-ctl start_northd/usr/share/openvswitch/scripts/ovn-ctl start_controller# start ovnkubenohup sudo ovnkube -k8s-kubeconfig kubeconfig.yaml -net-controller \-loglevel=4 \-k8s-apiserver="http://$CENTRAL_IP:8080" \-logfile="/var/log/openvswitch/ovnkube.log" \-init-master=$NODE_NAME -cluster-subnet="$CLUSTER_IP_SUBNET" \-service-cluster-ip-range=$SERVICE_IP_SUBNET \-nodeport \-nb-address="tcp://$CENTRAL_IP:6631" \-sb-address="tcp://$CENTRAL_IP:6632" 2>&1 &
nohup sudo ovnkube -k8s-kubeconfig kubeconfig.yaml -loglevel=4 \-logfile="/var/log/openvswitch/ovnkube.log" \-k8s-apiserver="http://$CENTRAL_IP:8080" \-init-node="$NODE_NAME" \-nodeport \-nb-address="tcp://$CENTRAL_IP:6631" \-sb-address="tcp://$CENTRAL_IP:6632" -k8s-token="$TOKEN" \-init-gateways \-service-cluster-ip-range=$SERVICE_IP_SUBNET \-cluster-subnet=$CLUSTER_IP_SUBNET 2>&1 &
从
ovnannotation获取ip/mac/gateway在容器netns中配置接口和路由
添加ovs端口
ovs-vsctl add-port br-int veth_outside \--set interface veth_outside \external_ids:attached_mac=mac_address \external_ids:iface-id=namespace_pod \external_ids:ip_address=ip_address
ovs-vsctl del-port br-int port
暂未实现。
所有节点配置安装源并安装公共依赖
sudo apt-get install apt-transport-httpsecho "deb https://packages.wand.net.nz $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/wand.listsudo curl https://packages.wand.net.nz/keyring.gpg -o /etc/apt/trusted.gpg.d/wand.gpgsudo apt-get updatesudo apt-get build-dep dkmssudo apt-get install python-six openssl python-pip -ysudo -H pip install --upgrade pipsudo apt-get install openvswitch-datapath-dkms -ysudo apt-get install openvswitch-switch openvswitch-common -ysudo -H pip install ovs
Master 节点安装 ovn-central
sudo apt-get install ovn-central ovn-common ovn-host -y
Node 节点安装 ovn-host
sudo apt-get install ovn-host ovn-common -y