Neutron介绍
openstack高可用集群6-OVS和VXLAN的结合
第 11 章 配置网桥映射 Red Hat OpenStack Platform 9 | Red Hat Customer Portal
第 7 章 把一个实例连接到物理网络 Red Hat Enterprise Linux OpenStack Platform 7 | Red Hat Customer Portal
命令
openstack network list 查看创建的网络列表
neutron net-create public01 --provider:network_type flat --provider:physical_network physnet1 --router:external=True --shared #创建provider网络。没创子网
neutron net-show flat #查看创建的网络名称flat详细
ovs-ofctl dump-flows br-int #查看经过ovs接口的数据包
ovs-ofctl dump-flows br-ex
provider与self-service网络
讲清楚说明白openstack中vm流量走向之1——集中式网络节点
虚拟网络连接外部网络
第 7 章 把一个实例连接到物理网络 Red Hat Enterprise Linux OpenStack Platform 7 | Red Hat Customer Portal
openstack网络=vxlan+provider+路由
root@m-openstack-20:~# ip route add 172.25.3.0/24 via 192.168.2.77 dev br-ex #在master节点或者计算节点添加到虚拟机路由
openstack四种网络类型
ovs-vsctl show
root@m-openstack-20:~# ovs-vsctl show
# br-tun是虚拟机通信设备网络，使用vxlan
# br-int连接br-tun与虚拟机veth对设备，网络节点的br-int还连接了路由器设备
# br-ex是内部网络，提供者网络
f6b704fb-30d8-4be4-afa8-18b852a779f9
Manager "ptcp:6640:127.0.0.1"
is_connected: true
Bridge br-tun
Controller "tcp:127.0.0.1:6633"
is_connected: true
fail_mode: secure
datapath_type: system
Port vxlan-c0a80316
Interface vxlan-c0a80316
type: vxlan
options: {df_default="true", egress_pkt_mark="0", in_key=flow, local_ip="192.168.3.20", out_key=flow, remote_ip="192.168.3.22"}
Port patch-int
Interface patch-int
type: patch
options: {peer=patch-tun}
Port vxlan-c0a80315
Interface vxlan-c0a80315
type: vxlan
options: {df_default="true", egress_pkt_mark="0", in_key=flow, local_ip="192.168.3.20", out_key=flow, remote_ip="192.168.3.21"}
Port br-tun
Interface br-tun
type: internal
Bridge br-ex
Controller "tcp:127.0.0.1:6633"
is_connected: true
fail_mode: secure
datapath_type: system
Port phy-br-ex
Interface phy-br-ex
type: patch
options: {peer=int-br-ex}
Port ens32
Interface ens32
Port br-ex
Interface br-ex
type: internal
Bridge br-int
Controller "tcp:127.0.0.1:6633"
is_connected: true
fail_mode: secure
datapath_type: system
Port tap708af430-c4
tag: 3
Interface tap708af430-c4
type: internal
Port br-int
Interface br-int
type: internal
Port patch-tun
Interface patch-tun
type: patch
options: {peer=patch-int}
Port qr-e6e8aabb-d5
tag: 2
Interface qr-e6e8aabb-d5 #连接的是路由器，tag是2
type: internal
Port qg-7561b4dd-af
tag: 1
Interface qg-7561b4dd-af #连接的是路由器，tag是1
type: internal
Port tap9b2253ea-06
tag: 2
Interface tap9b2253ea-06
type: internal
Port qr-baf680b7-4d
tag: 3
Interface qr-baf680b7-4d #连接的是路由器，打上tag3
type: internal
Port tape74e5b71-6d
tag: 1
Interface tape74e5b71-6d
type: internal
Port int-br-ex
Interface int-br-ex
type: patch
options: {peer=phy-br-ex}
ovs_version: "2.13.1"
# 路由器设备查看
root@m-openstack-20:~# ip net list
qrouter-78f6416a-f7d2-409a-97bb-786c249f9a5c (id: 3)
qdhcp-13d54342-2068-4d56-a61f-0c95e3a46ea8 (id: 2)
qdhcp-315f4635-eedd-4919-a70f-a942c6055c11 (id: 1)
qdhcp-7ad8a0b0-8a94-4bbc-bcdb-464674fc387e (id: 0)
root@m-openstack-20:~# ip net exec qrouter-78f6416a-f7d2-409a-97bb-786c249f9a5c route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.2.2 0.0.0.0 UG 0 0 0 qg-7561b4dd-af
172.25.2.0 0.0.0.0 255.255.255.0 U 0 0 0 qr-baf680b7-4d
172.25.3.0 0.0.0.0 255.255.255.0 U 0 0 0 qr-e6e8aabb-d5
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 qg-7561b4dd-af
# 清理ovs接口
/usr/bin/neutron-ovs-cleanup --ovs_all_ports
linuxbridge+vlan
Neutron Vlan Network 原理- 每天5分钟玩转 OpenStack（92） - CloudMan - 博客园
交换机的Access口与Trunk口
Openstack基础环境交换机常用配置(CISCO 3750G为例)