openstack-flat 網絡問題

使用packstack安裝，版本為M，默認為vxlan網絡， 操作系統為centos7.

由於學習的需要修改為flat網絡。

首先修改配置文件：

/etc/neutron/plugins/ml2/ml2_conf.ini

type_drivers = flat

tenant_network_types =flat

mechanism_drivers =openvswitch

flat_networks = physnet1

 

然后修改/etc/neutron/plugins/ml2/openvswitch_agent.ini

bridge_mappings = physnet1:br-phy

 

增加ovs br-phy,並且綁定對外端口：

[root@myopenstack ml2]# ovs-vsctl show
73bdadc0-287a-4c0f-9c54-6ad6fb575347
    Bridge br-ex
        Port "qg-2ccfa701-cd"
            Interface "qg-2ccfa701-cd"
                type: internal
        Port br-ex
            Interface br-ex
                type: internal
    Bridge br-phy
        Port "enp0s3"
            Interface "enp0s3"
        Port phy-br-phy
            Interface phy-br-phy
                type: patch
                options: {peer=int-br-phy}
        Port br-phy
            Interface br-phy
                type: internal

　　然后重啟service：    neutron-server  neutron-dhcp-agent neutron-openvswitch-agent

    創建網絡：

創建一個instance，使用這個網絡。

但是instance創建完成后，不能夠與外界通信。

自己嘗試分析原因：

[root@myopenstack ml2]# brctl show
bridge name bridge id STP enabled interfaces
qbr187d132b-9d 8000.ce4f9fccba4d no qvb187d132b-9d
　　　　　　　　　　　　　　　　　　tap187d132b-9d

instance創建一個linux bridge, 端口為qvb187d132b-9d。

[root@myopenstack ml2]# ovs-vsctl show
73bdadc0-287a-4c0f-9c54-6ad6fb575347
    Bridge br-ex
        Port "qg-2ccfa701-cd"
            Interface "qg-2ccfa701-cd"
                type: internal
        Port br-ex
            Interface br-ex
                type: internal
    Bridge br-phy
        Port "enp0s3"
            Interface "enp0s3"
        Port phy-br-phy
            Interface phy-br-phy
                type: patch
                options: {peer=int-br-phy}
        Port br-phy
            Interface br-phy
                type: internal
    Bridge br-tun
        fail_mode: secure
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    Bridge br-flat
        Port br-flat
            Interface br-flat
                type: internal
        Port phy-br-flat
            Interface phy-br-flat
                type: patch
                options: {peer=int-br-flat}
    Bridge br-int
        fail_mode: secure
        Port int-br-phy
            Interface int-br-phy
                type: patch
                options: {peer=phy-br-phy}
        Port "int-br-eth0"
            Interface "int-br-eth0"
                type: patch
                options: {peer="phy-br-eth0"}
        Port br-int
            Interface br-int
                type: internal
        Port "tap239b2780-1b"
            tag: 2
            Interface "tap239b2780-1b"
                type: internal
        Port int-br-flat
            Interface int-br-flat
                type: patch
                options: {peer=phy-br-flat}
        Port "qvo187d132b-9d"
            tag: 1
            Interface "qvo187d132b-9d"
        Port "qr-9e110b6b-5d"
            tag: 2
            Interface "qr-9e110b6b-5d"
                type: internal
        Port "tap2b05a39d-da"
            tag: 1
            Interface "tap2b05a39d-da"
                type: internal
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
    ovs_version: "2.5.0"

　　

linux bridge 連接到bridage br-int 而不是預期的 bridge br-phy.

誰能幫忙看看這個問題的原因何在？

非常感謝。