#https:#www.jianshu.com/p/dc565d6aaebd

###创建1个交换机和一个路由器

#创建两个虚拟交换机 ls1

ovn-nbctl ls-add ls1

#创建一个虚拟路由器 lr1

ovn-nbctl lr-add lr1

#在虚拟路由器 lr1 上添加端口，用来连接虚拟交换机 ls1

ovn-nbctl lrp-add lr1 lr1-ls1 00:00:00:00:00:01 10.10.10.1/24

#在虚拟交换机 ls1 上添加端口，用来连接虚拟路由器 lr1

ovn-nbctl lsp-add ls1 ls1-lr1

#端口类型必须为 router

ovn-nbctl lsp-set-type ls1-lr1 router

#设置地址，必须和 lr1-ls1 的一致

ovn-nbctl lsp-set-addresses ls1-lr1 00:00:00:00:00:01

#指定 router-port

ovn-nbctl lsp-set-options ls1-lr1 router-port=lr1-ls1

###在交换机上添加vm接口

#在虚拟交换机 ls1 上添加两个端口，指定 mac 和 ip(10.10.10.0/24网段)，用来连接vm

ovn-nbctl lsp-add ls1 ls1-vm1

ovn-nbctl lsp-set-addresses ls1-vm1 "00:00:00:00:00:03 10.10.10.2"

ovn-nbctl lsp-set-port-security ls1-vm1 "00:00:00:00:00:03 10.10.10.2"

ovn-nbctl lsp-add ls1 ls1-vm2

ovn-nbctl lsp-set-addresses ls1-vm2 "00:00:00:00:00:04 10.10.10.3"

ovn-nbctl lsp-set-port-security ls1-vm2 "00:00:00:00:00:04 10.10.10.3"

ovn-nbctl lsp-add ls1 ls1-vm3

ovn-nbctl lsp-set-addresses ls1-vm3 "00:00:00:00:00:06 10.10.10.4"

ovn-nbctl lsp-set-port-security ls1-vm3 "00:00:00:00:00:06 10.10.10.4"

###创建四个vm

#在 node-1 节点上，创建两个namespace，用来模拟两个vm，使用 "iface-id" 指定

#这两个vm属于 ls1

ip netns add vm1

ovs-vsctl add-port br-int vm1 -- set interface vm1 type=internal

ip link set vm1 netns vm1

ip netns exec vm1 ip link set vm1 address 00:00:00:00:00:03

ip netns exec vm1 ip addr add 10.10.10.2/24 dev vm1

ip netns exec vm1 ip link set vm1 up

ip netns exec vm1 ip route add default via 10.10.10.1 dev vm1

ovs-vsctl set Interface vm1 external_ids:iface-id=ls1-vm1

ip netns add vm2

ovs-vsctl add-port br-int vm2 -- set interface vm2 type=internal

ip link set vm2 netns vm2

ip netns exec vm2 ip link set vm2 address 00:00:00:00:00:04

ip netns exec vm2 ip addr add 10.10.10.3/24 dev vm2

ip netns exec vm2 ip link set vm2 up

ip netns exec vm2 ip route add default via 10.10.10.1 dev vm2

ovs-vsctl set Interface vm2 external_ids:iface-id=ls1-vm2

# 在 node2 节点上

ip netns add vm3

ovs-vsctl add-port br-int vm3 -- set interface vm3 type=internal

ip link set vm3 netns vm3

ip netns exec vm3 ip link set vm3 address 00:00:00:00:00:06

ip netns exec vm3 ip addr add 10.10.10.4/24 dev vm3

ip netns exec vm3 ip link set vm3 up

ip netns exec vm3 ip route add default via 10.10.10.1 dev vm3

ovs-vsctl set Interface vm3 external_ids:iface-id=ls1-vm3

#==创建ovs端口=========================

TYPE="OVSPort"

OVS_BRIDGE=br-phy

DEVICE_TYPE=ovs

BOOTPROTO="static"

DEFROUTE=yes

NAME="enp0s8"

DEVICE="enp0s8"

ONBOOT="yes"

#==创建外部网络网桥================

TYPE="OVSBridge"

DEVICETYPE=ovs

OVSBOOTPROTO="static"

DEFROUTE="yes"

NAME="br-phy"

DEVICE="br-phy"

ONBOOT="yes"

IPADDR="172.18.0.11"

PREFIX="24"

GATEWAY="172.18.0.1"

DNS1="114.114.114.114"

#解决默认路由优先级问题

#[root@node-1 network-scripts]# ip route

#default via 172.18.0.1 dev br-phy

#default via 192.168.3.1 dev enp0s3 proto static metric 109

#169.254.0.0/16 dev br-phy scope link metric 1011

#172.18.0.0/24 dev br-phy proto kernel scope link src 172.18.0.11

#192.168.3.0/24 dev enp0s3 proto kernel scope link src 192.168.3.111 metric 109

ip route del default via 172.18.0.1 dev br-phy

ip route add default via 172.18.0.1 dev br-phy metric 110

#

#解决ovs system-id 由于是克隆的ovs导致总是一致的问题

#1.在每个节点安装ovs必须是在干净的环境

#2.临时修改system-id的值

#3.修改/etc/openvswitch/system-id.conf的值

#编辑租户网络网卡

TYPE="Ethernet"

PROXY_METHOD="none"

BROWSER_ONLY="no"

BOOTPROTO="static"

DEFROUTE="yes"

IPV4_FAILURE_FATAL="no"

IPV6INIT="yes"

IPV6_AUTOCONF="yes"

IPV6_DEFROUTE="yes"

IPV6_FAILURE_FATAL="no"

IPV6_ADDR_GEN_MODE="stable-privacy"

NAME="em3"

DEVICE="em3"

ONBOOT="yes"

IPADDR="172.168.2.11"

PREFIX="24"

GATEWAY="172.168.2.254"

DNS1="114.114.114.114"

IPV6_PRIVACY="no"

#关闭selinux

setenforce 0

echo 1 > /proc/sys/net/ipv4/ip_forward

vi /etc/sysctl.conf

net.ipv4.ip_forward = 1

sysctl -p

#10.10.20.2 ping 10.10.20.1 网关不通

#经排查是未设置ls2交换机上的路由器端口的mac地址

######开始创建分布式网关端口相关组件

#设置分布式路由端口

#ovn-nbctl lrp-add lr1 lr1-lslocal 00:00:00:00:00:05 10.10.40.1/24

#设置 Distributed Gateway Ports 的方式之一：

ovn-nbctl ha-chassis-group-add ha1

ovn-nbctl ha-chassis-group-add-chassis ha1 master 1

ovn-nbctl ha-chassis-group-add-chassis ha1 node1 2

#465efd10-c0e0-4966-be32-a20b213a2dbc 为 ha1 的uuid，可通过 ovn-nbctl ha-chassis-group-list 查看

ovn-nbctl set Logical_Router_Port lr1-lslocal ha_chassis_group=465efd10-c0e0-4966-be32-a20b213a2dbc

#设置 Distributed Gateway Ports 的方式之二：

ovn-nbctl lrp-set-gateway-chassis lr1-lslocal master 1

ovn-nbctl lrp-set-gateway-chassis lr1-lslocal node1 2

# 开始

#添加逻辑交换机，用于连接外部网络

ovn-nbctl lrp-add lr1 lr1-lslocal 00:00:00:00:00:05 192.168.51.230/24

ovn-nbctl ls-add lslocal

ovn-nbctl lsp-add lslocal lslocal-lr1

ovn-nbctl lsp-set-type lslocal-lr1 router

ovn-nbctl lsp-set-addresses lslocal-lr1 00:00:00:00:00:05

ovn-nbctl lsp-set-options lslocal-lr1 router-port=lr1-lslocal

#####

别忘记了给路由器配置默认路由

#####

#问题网关节点设置的ip不通，是因为路由器的网关接口mac与外部逻辑交换机的路由器端口mac地址不符

ovn-nbctl lsp-add lslocal lslocal-localnet

ovn-nbctl lsp-set-addresses lslocal-localnet unknown

ovn-nbctl lsp-set-type lslocal-localnet localnet

ovn-nbctl lsp-set-options lslocal-localnet network_name=net1

#只有指定的gateway-chassis上需要执行下面命令，本实验中master和node1都被指定成gateway-chassis

#在master节点上执行

#ovs-vsctl add-br br-phy

#ovs-vsctl add-port br-phy ens8

ovs-vsctl set Open_vSwitch . external-ids:ovn-bridge-mappings=externalnet:br-phy

#ip link set dev br-phy up

#ip addr add 10.10.40.2/24 dev br-phy

#在node1节点上执行

#ovs-vsctl add-br br-phy

#ovs-vsctl add-port br-phy ens8

ovs-vsctl set Open_vSwitch . external-ids:ovn-bridge-mappings=externalnet:br-phy

#ip link set dev br-phy up

#ip addr add 10.10.40.3/24 dev br-phy

ovn-nbctl lrp-set-gateway-chassis lr1-lslocal 4e172a94-e755-4f3d-96bc-0e991eec4ec7 1

ovn-nbctl lrp-set-gateway-chassis lr1-lslocal 5e172a94-e755-4f3d-96bc-0e991eec4ec8 2