openstack配置扁平網絡（一個內網，一個外網，兩個網卡）

1. 修改配置文件
   管理節點

   vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini
   [linux_bridge]
   physical_interface_mappings = public:eth0,internal:eth1

vim /etc/neutron/plugins/ml2/ml2_conf.ini
[ml2_type_flat]
flat_networks = public,internal

systemctl restart neutron-server.service neutron-linuxbridge-agent.service

計算節點

vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[linux_bridge]
physical_interface_mappings = public:eth0,internal:eth1

systemctl restart neutron-linuxbridge-agent.service

2. 在控制節點添加網絡和子網

   openstack network create  --share --external \
   --provider-physical-network internal \
   --provider-network-type flat internal

openstack subnet create --network internal \
  --allocation-pool start=10.201.2.100,end=10.201.2.200 \
  --dns-nameserver 202.96.134.133 --gateway 10.201.2.254 \
  --subnet-range 10.201.2.0/24 internal

openstack network list