物理環境: master01(172.31.133.26), node01(172.31.133.27), node02(172.31.133.28)node
邏輯網絡: 一個邏輯路由器router0,鏈接三個邏輯交換機bridge0,bridge1,bridge2。每一個交換機上有一個端口,鏈接上pod或者vm。以下:網絡
ovn-nbctl show架構
switch 679c8a34-5f60-42a8-91a3-5f727e41e2af (bridge1) port bridge1-vm1 addresses: ["dynamic"] port bridge1-router0 type: router router-port: router0-bridge1 switch 7124d3c4-950a-4f4a-9733-db7f204a96c4 (bridge2) port bridge2-router0 type: router router-port: router0-bridge2 port bridge2-vm2 addresses: ["dynamic"] switch 05b72423-5db2-4279-8b5f-5f4b5e8c1408 (bridge0) port bridge0-router0 type: router router-port: router0-bridge0 port bridge0-vm0 addresses: ["dynamic"] router a96ea502-72df-41a2-ac27-0271e60661d2 (router0) port router0-bridge1 mac: "04:ac:10:ff:34:01" networks: ["172.66.2.10/24"] port router0-bridge0 mac: "04:ac:10:ff:34:00" networks: ["172.66.1.10/24"] port router0-bridge2 mac: "04:ac:10:ff:34:02" networks: ["172.66.3.10/24"]
ovs-vsctl show (node02上)分佈式
1bd24d64-5b67-4497-b972-5789ba8d4fa7 Bridge br-int fail_mode: secure Port "qtest3vm0mqm5g" Interface "qtest3vm0mqm5g" Port "ovn-aa8648-0" Interface "ovn-aa8648-0" type: geneve options: {csum="true", key=flow, remote_ip="172.31.133.27"} Port br-int Interface br-int type: internal Port "ovn-1800fb-0" Interface "ovn-1800fb-0" type: geneve options: {csum="true", key=flow, remote_ip="172.31.133.26"} ovs_version: "2.11.2"
相對物理網絡
在集羣每一個節點的ovs網橋br-int上添加一個端口ovn0,經過路由規則,將ovn0做爲外部流量出入口。測試
邏輯網絡
添加邏輯交換機join,將各個節點的ovn0流量關聯到交換機join的邏輯端口。而後將交換機連到邏輯路由器router0上,組成連通的ovn邏輯網絡spa
建立邏輯交換機jion,並連上邏輯路由器router0。code
# 建立邏輯交換機jion ovn-nbctl ls-add join # 關聯邏輯路由器router0 ovn-nbctl lrp-add router0 router0-join 04:ac:10:ff:35:02 172.66.4.10/24 ovn-nbctl lsp-add join join-router0 ovn-nbctl lsp-set-type join-router0 router ovn-nbctl lsp-set-addresses join-router0 04:ac:10:ff:35:02 ovn-nbctl lsp-set-options join-router0 router-port=router0-join # 刪除端口 # ovn-nbctl lrp-del router0-jion # ovn-nbctl lsp-del join-router0
爲邏輯交換機jion添加端口router
添加port ovn-nbctl lsp-add join master01 ovn-nbctl lsp-set-addresses master01 "04:ac:10:ff:35:04 172.66.4.1" ovn-nbctl lsp-add join node01 ovn-nbctl lsp-set-addresses node01 "04:ac:10:ff:35:05 172.66.4.2" ovn-nbctl lsp-add join node02 ovn-nbctl lsp-set-addresses node02 "04:ac:10:ff:35:06 172.66.4.3" # 刪除port # ovn-nbctl lsp-del master01 # ovn-nbctl lsp-del node01 # ovn-nbctl lsp-del node02
關聯邏輯端口(在每一個節點上執行),並設置mac和ipblog
# 在master01上 ovs-vsctl add-port br-int ovn0 -- set Interface ovn0 type=internal ovs-vsctl set Interface ovn0 external_ids:iface-id=master01 ifconfig ovn0 172.66.4.1 netmask 255.255.255.0 ifconfig ovn0 hw ether 04:ac:10:ff:35:04 # 在node01上 ovs-vsctl add-port br-int ovn0 -- set Interface ovn0 type=internal ovs-vsctl set Interface ovn0 external_ids:iface-id=node01 ifconfig ovn0 172.66.4.2 netmask 255.255.255.0 ifconfig ovn0 hw ether 04:ac:10:ff:35:05 # 在node02上 ovs-vsctl add-port br-int ovn0 -- set Interface ovn0 type=internal ovs-vsctl set Interface ovn0 external_ids:iface-id=node02 ifconfig ovn0 172.66.4.3 netmask 255.255.255.0 ifconfig ovn0 hw ether 04:ac:10:ff:35:06
如今有三個用戶交換機bridge0(172.66.1.10/24),bridge1(172.66.2.10/24),bridge2(172.66.3.10/24),也就是三個網段須要出網圖片
添加宿主機路由
# 須要在每一個節點上執行 # 在node01上,(node02 master01上一樣操做) route add -net 172.66.1.0/24 gw 172.66.4.10 route add -net 172.66.2.0/24 gw 172.66.4.10 route add -net 172.66.3.0/24 gw 172.66.4.10
添加ovn虛擬路由器router0路由
# 添加後容器內能夠ping通宿主機 ovn-nbctl lr-route-add router0 172.31.133.27 172.66.4.2 ovn-nbctl lr-route-add router0 172.31.133.28 172.66.4.3 ovn-nbctl lr-route-add router0 172.31.133.26 172.66.4.1
展現
[root@master01 /]# ovn-nbctl lr-route-list router0 IPv4 Routes 172.31.133.26 172.66.4.1 dst-ip 172.31.133.27 172.66.4.2 dst-ip 172.31.133.28 172.66.4.3 dst-ip
上面的操做執行後,容器和宿主機能夠互通。若是想要出公網,還須要添加以下路由:
添加ovn虛擬路由器router0路由
ovn-nbctl --policy=src-ip lr-route-add router0 172.66.1.12 172.66.4.3 ovn-nbctl --policy=src-ip lr-route-add router0 172.66.3.12 172.66.4.2 ovn-nbctl --policy=src-ip lr-route-add router0 172.66.2.12 172.66.4.3
如上配置的是分佈式網關,也能夠經過路由規則實現集中式網關如:ovn-nbctl --policy=src-ip lr-route-add router0 172.66.1.12/24 172.66.4.3
,讓全部172.66.1.12/24網段的流量都走172.66.4.3出網
展現
[root@master01 /]# ovn-nbctl lr-route-list router0 IPv4 Routes 172.31.133.26 172.66.4.1 dst-ip 172.31.133.27 172.66.4.2 dst-ip 172.31.133.28 172.66.4.3 dst-ip 172.66.1.12 172.66.4.3 src-ip 172.66.2.12 172.66.4.3 src-ip 172.66.3.12 172.66.4.2 src-ip
添加snat
在每須要出網的節點上執行(node01,node02) > iptables -t nat -A POSTROUTING -s 172.66.3.0/24 -o bond0.1331 -j MASQUERADE > iptables -t nat -A POSTROUTING -s 172.66.1.0/24 -o bond0.1331 -j MASQUERADE > iptables -t nat -A POSTROUTING -s 172.66.2.0/24 -o bond0.1331 -j MASQUERADE
測試
我這邊邏輯交換機上連的是容器化的虛機
[root@master01 ovn]# virtctl console vm1 [root@vm1 ~]# ping 14.215.177.39 PING 14.215.177.39 (14.215.177.39) 56(84) bytes of data. 64 bytes from 14.215.177.39: icmp_seq=1 ttl=49 time=28.0 ms 64 bytes from 14.215.177.39: icmp_seq=2 ttl=49 time=25.9 ms --- 14.215.177.39 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 25.943/26.989/28.036/1.059 ms
完美收工