理解:
openstack 内部网络结构如下
|------------ 内部网络 ----------| <- 虚拟路由 -> |----- 外部网络 ------|
[instance1 eth0] ==== br-int br-ext====== 物理eth0
[instance2 eth1] =====/
确保打开网络转发功能
[root@station140 ~(keystone_admin)]# sysctl -p
net.ipv4.ip_forward = 1
cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0" BOOTPROTO="none" HWADDR="00:50:56:81:C6:5B" [必须具有正确的 MAC, 否则报错] IPV6INIT="no" MTU="1500" NM_CONTROLLED="no" ONBOOT="yes" TYPE="Ethernet" UUID="f3690b2c-7707-4be0-8f76-648cb64da30f" #IPADDR=192.168.48.140 #NETMASK=255.255.255.0 #GATEWAY=192.168.48.1
cat /etc/sysconfig/network-scripts/ifcfg-br-ex
DEVICE=br-ex IPADDR=192.168.48.140 NETMASK=255.255.255.0 ONBOOT=yes GATEWAY=192.168.48.1
生效方法, 必须一行执行, 否则网络断开 ssh 连接
ovs-vsctl add-port br-ex eth0; service network restart
查询网络地址(只显示部分信息)
[root@station140 ~(keystone_admin)]# ifconfig
br-ex Link encap:Ethernet HWaddr 00:50:56:81:C6:5B
inet addr:192.168.48.140 Bcast:192.168.48.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fe81:c65b/64 Scope:Link
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:32144 errors:0 dropped:0 overruns:0 frame:0
TX packets:24644 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:11952047 (11.3 MiB) TX bytes:7386338 (7.0 MiB)
br-int Link encap:Ethernet HWaddr AA:98:12:BD:BD:49
inet6 addr: fe80::a898:12ff:febd:bd49/64 Scope:Link
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:270 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:23380 (22.8 KiB) TX bytes:468 (468.0 b)
eth0 Link encap:Ethernet HWaddr 00:50:56:81:C6:5B
inet6 addr: fe80::250:56ff:fe81:c65b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:17270550 errors:0 dropped:0 overruns:0 frame:0
TX packets:25699 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:19175912632 (17.8 GiB) TX bytes:7421019 (7.0 MiB)
