ovn+ 控制节点 + 计算节点

启动ovn
控制节点：

# start ovsdb-server
/usr/share/openvswitch/scripts/ovs-ctl start --system-id=random

# start ovn northd
/usr/share/openvswitch/scripts/ovn-ctl start_northd

export CENTRAL_IP=10.140.0.2
export LOCAL_IP=10.140.0.2
export ENCAP_TYPE=vxlan
ovs-vsctl set Open_vSwitch . external_ids:ovn-remote="tcp:$CENTRAL_IP:6642" external_ids:ovn-nb="tcp:$CENTRAL_IP:6641" external_ids:ovn-encap-ip=$LOCAL_IP external_ids:ovn-encap-type="$ENCAP_TYPE"
计算节点：

# start ovsdb-server
/usr/share/openvswitch/scripts/ovs-ctl start --system-id=random
# start ovn-controller and vtep
/usr/share/openvswitch/scripts/ovn-ctl start_controller
/usr/share/openvswitch/scripts/ovn-ctl start_controller_vtep

export CENTRAL_IP=10.140.0.2
export LOCAL_IP=10.140.0.2
export ENCAP_TYPE=vxlan
ovs-vsctl set Open_vSwitch . external_ids:ovn-remote="tcp:$CENTRAL_IP:6642" external_ids:ovn-nb="tcp:$CENTRAL_IP:6641" external_ids:ovn-encap-ip=$LOCAL_IP external_ids:ovn-encap-type="$ENCAP_TYPE"
对于ovs 1.7，还需要设置

ovn-nbctl set-connection ptcp:6641
ovn-sbctl set-connection ptcp:6642