openstack中母机重启后网桥设置-创新互联

# 需求：迁移环境母机在重启后，需要手动配置网桥
重启后，如下图示：

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[root@host-10-123-98-218 ~]# ifconfig
eth2      Link encap:Ethernet  HWaddr 00:E0:81:E6:6C:3B  
          inet addr:10.123.98.218  Bcast:10.123.98.255  Mask:255.255.255.192
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5374 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4010 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:584689 (570.9 KiB)  TX bytes:575491 (562.0 KiB)
          Memory:f7900000-f7920000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:163 errors:0 dropped:0 overruns:0 frame:0
          TX packets:163 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:167824 (163.8 KiB)  TX bytes:167824 (163.8 KiB)

可以查看更多的网络情况

[root@host-10-123-98-218 ~]# ip a
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
2: eth0:  mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether 00:e0:81:e6:6c:3a brd ff:ff:ff:ff:ff:ff
3: eth2:  mtu 1500 qdisc mq state UP qlen 1000
    link/ether 00:e0:81:e6:6c:3b brd ff:ff:ff:ff:ff:ff
    inet 10.123.98.218/26 brd 10.123.98.255 scope global eth2
       valid_lft forever preferred_lft forever

查看当前网桥信息

[root@host-10-123-98-218 ~]# brctl show
bridge name     bridge id               STP enabled     interfaces

这里可以对比同一网络区域其他正常母机网络，如下:

[root@host-10-123-98-213 ~]# ifconfig                                       
eth2      Link encap:Ethernet  HWaddr 00:E0:81:E6:6B:BB                             #真实网卡
          inet addr:10.123.98.213  Bcast:10.123.98.255  Mask:255.255.255.192
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1758313140 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1129411318 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:301531883354 (280.8 GiB)  TX bytes:184138656905 (171.4 GiB)
          Memory:f7900000-f7920000 

eth2.3    Link encap:Ethernet  HWaddr 00:E0:81:E6:6B:BB                             #添加的网桥
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:542897803 errors:0 dropped:0 overruns:0 frame:0
          TX packets:114650555 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:33814358483 (31.4 GiB)  TX bytes:22081251843 (20.5 GiB)

eucabr3   Link encap:Ethernet  HWaddr 00:E0:81:E6:6B:BB                             # #添加的网桥
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:439499091 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:23134270803 (21.5 GiB)  TX bytes:0 (0.0 b)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:158403403 errors:0 dropped:0 overruns:0 frame:0
          TX packets:158403403 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:11455266584 (10.6 GiB)  TX bytes:11455266584 (10.6 GiB)

vnet0     Link encap:Ethernet  HWaddr FE:54:00:7E:8B:25                            #虚拟机网卡
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:256 errors:0 dropped:439498799 overruns:0 carrier:0
          collisions:0 txqueuelen:500 
          RX bytes:0 (0.0 b)  TX bytes:15360 (15.0 KiB)

vnet1     Link encap:Ethernet  HWaddr FE:0D:EB:DA:A9:43                            #虚拟机网卡
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:114650555 errors:0 dropped:0 overruns:0 frame:0
          TX packets:542897475 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500 
          RX bytes:22081251843 (20.5 GiB)  TX bytes:41255620926 (38.4 GiB)

1、设置子网卡 eth2.3 #vconfig add eth2 3
2、创建网桥 #brctl addbr eucabr3
3、将eht1.3端口加入到网桥eucabr3 #brctl addif eucabr3 eth2.3
4、启动子网卡和网桥 ifconfig eth2.3 up;ifconfig eucabe3 up

[root@host-10-123-98-218 ~]# ifconfig
eth2      Link encap:Ethernet  HWaddr 00:E0:81:E6:6C:3B  
          inet addr:10.123.98.218  Bcast:10.123.98.255  Mask:255.255.255.192
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:20978 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8223 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1682834 (1.6 MiB)  TX bytes:1258355 (1.2 MiB)
          Memory:f7900000-f7920000 

eth2.3    Link encap:Ethernet  HWaddr 00:E0:81:E6:6C:3B  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8419 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:394168 (384.9 KiB)  TX bytes:0 (0.0 b)

eucabr3   Link encap:Ethernet  HWaddr 00:E0:81:E6:6C:3B  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1505 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:71176 (69.5 KiB)  TX bytes:0 (0.0 b)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:221 errors:0 dropped:0 overruns:0 frame:0
          TX packets:221 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:172856 (168.8 KiB)  TX bytes:172856 (168.8 KiB)

查看母机上虚拟机状态，启动处于关闭状态的虚拟机

[root@host-10-123-98-218 ~]# virsh list
 Id    Name                           State
----------------------------------------------------

[root@host-10-123-98-218 ~]# virsh list --all
 Id    Name                           State
----------------------------------------------------
 -     i-C70462A7                     shut off
 -     i-D69199A5                     shut off

[root@host-10-123-98-218 ~]# vitsh start i-C70462A7
Hey! No command 'vitsh' found, did you mean 'virsh'?
[root@host-10-123-98-218 ~]# virsh start i-C70462A7
Domain i-C70462A7 started

[root@host-10-123-98-218 ~]# virsh dominfo i-C70462A7
Id:             12
Name:           i-C70462A7
UUID:           5452a99f-9695-46d8-b7b6-92658d1e85d8
OS Type:        hvm
State:          running
CPU(s):         4
CPU time:       4.9s
Max memory:     3670016 KiB
Used memory:    3670016 KiB
Persistent:     yes
Autostart:      disable
Managed save:   no
Security model: none
Security DOI:   0

[root@host-10-123-98-218 ~]# virsh list --all
 Id    Name                           State
----------------------------------------------------
 12    i-C70462A7                     running
 -     i-D69199A5                     shut off
 -

虚拟机正常启动，就表示母机网桥设置正常

[root@host-10-123-98-218 ~]# ping 10.123.7.87
PING 10.123.7.87 (10.123.7.87) 56(84) bytes of data.
64 bytes from 10.123.7.87: icmp_seq=1 ttl=63 time=0.312 ms
64 bytes from 10.123.7.87: icmp_seq=2 ttl=63 time=0.267 ms

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