xen虚拟化实战系列(十)之xen虚拟机双网卡配置-白红宇

原创作品，允许转载，转载时请务必以超链接形式标明文章、作者信息和本声明。否则将追究法律责任。

xen虚拟化实战系列文章列表

xen虚拟化实战系列(十三)之xen虚拟机集中管理之convirt

现在通常服务器最基本也配置了双网卡，服务器在上应用的时候通常这么设计，一个网卡分配业务应用网段，接收用户访问，一个网卡连接内部网段，连接数据库或NFS共享等类似应用，这样一来可以充分利用网卡带宽，提高网络效率。本文出自：http://koumm.blog.51cto.com

本文只是做了一个示例：

配置思路：

(1) 物理机双网卡，xen虚拟化平台也配置成双网桥。

(2) xen虚拟机也添加双网卡，分别桥网两个网卡，配置不同网段IP,内部网段可以不用配置网关。

1. xen主机上配置

1. 配置eth1网卡的IP地址

# vi /etc/sysconfig/network-scripts/ifcfg-eth1

并启动网卡：

# ifdown eth1 关闭网卡

# ifup eth1 启动网卡

2. 修改xen网桥配置配置文件

# cp /etc/xen/scripts/network-bridge /etc/xen/scripts/network-bridge.xen

# vi /etc/xen/xend-config.sxp

#(network-script network-bridge) 注释掉这行，添加如下一行

(network-script network-xen-multi-bridge)

3. 创建xenbr1网桥配置

# 创建另一个xenbr1配置脚本文件

# cd /etc/xen

                            
# vi network-xen-multi-bridge
#!/bin/sh
# network-xen-multi-bridge
# Exit 
if
anything goes wrong.
set
-e
# First arg 
is
the operation.
OP=$
1
shift
script=/etc/xen/scripts/network-bridge.xen
case
${OP} 
in
start)
$script start vifnum=
1
bridge=xenbr1 netdev=eth1
$script start vifnum=
0
bridge=xenbr0 netdev=eth0
;;
stop)
$script stop vifnum=
1
bridge=xenbr1 netdev=eth1
$script stop vifnum=
0
bridge=xenbr0 netdev=eth0
;;
status)
$script status vifnum=
1
bridge=xenbr1 netdev=eth1
$script status vifnum=
0
bridge=xenbr0 netdev=eth0
;;
*)
echo 
'Unknown command: '
${OP}
echo 
'Valid commands are: start, stop, status'
exit 
1
esac
         
       

# chmod +x network-xen-multi-bridge

4. 手工启动创建xenbr1网桥，并绑定eth1端口

手动执行创建虚拟网桥脚本

# /etc/xen/scripts/network-bridge.xen start vifnum=1 bridge=xenbr1 netdev=eth1

# 重启服务器

[root@node1 ~]# ifconfig

                            
eth0      Link encap:Ethernet  HWaddr 
00
:0C:
29
:F0:
01
:
51
inet addr:
192.168
.
233.150
Bcast:
192.168
.
233.255
Mask:
255.255
.
255.0
UP BROADCAST RUNNING MULTICAST  MTU:
1500
Metric:
1
RX packets:
35
errors:
0
dropped:
0
overruns:
0
frame:
0
TX packets:
46
errors:
0
dropped:
0
overruns:
0
carrier:
0
collisions:
0
txqueuelen:
0
RX bytes:
5614
(
5.4
KiB)  TX bytes:
7879
(
7.6
KiB)
eth1      Link encap:Ethernet  HWaddr 
00
:0C:
29
:F0:
01
:5B
inet addr:
10.10
.
10.10
Bcast:
10.10
.
10.255
Mask:
255.255
.
255.0
UP BROADCAST RUNNING MULTICAST  MTU:
1500
Metric:
1
RX packets:
18
errors:
0
dropped:
0
overruns:
0
frame:
0
TX packets:
14
errors:
0
dropped:
0
overruns:
0
carrier:
0
collisions:
0
txqueuelen:
0
RX bytes:
3671
(
3.5
KiB)  TX bytes:
3325
(
3.2
KiB)
lo        Link encap:Local Loopback
inet addr:
127.0
.
0.1
Mask:
255.0
.
0.0
UP LOOPBACK RUNNING  MTU:
16436
Metric:
1
RX packets:
1664
errors:
0
dropped:
0
overruns:
0
frame:
0
TX packets:
1664
errors:
0
dropped:
0
overruns:
0
carrier:
0
collisions:
0
txqueuelen:
0
RX bytes:
4532496
(
4.3
MiB)  TX bytes:
4532496
(
4.3
MiB)
peth0     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP  MTU:
1500
Metric:
1
RX packets:
59
errors:
0
dropped:
0
overruns:
0
frame:
0
TX packets:
70
errors:
0
dropped:
0
overruns:
0
carrier:
0
collisions:
0
txqueuelen:
1000
RX bytes:
9967
(
9.7
KiB)  TX bytes:
11564
(
11.2
KiB)
peth1     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP  MTU:
1500
Metric:
1
RX packets:
89
errors:
0
dropped:
0
overruns:
0
frame:
0
TX packets:
32
errors:
0
dropped:
0
overruns:
0
carrier:
0
collisions:
0
txqueuelen:
1000
RX bytes:
14686
(
14.3
KiB)  TX bytes:
6534
(
6.3
KiB)
vif0.
0
Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP  MTU:
1500
Metric:
1
RX packets:
47
errors:
0
dropped:
0
overruns:
0
frame:
0
TX packets:
35
errors:
0
dropped:
0
overruns:
0
carrier:
0
collisions:
0
txqueuelen:
0
RX bytes:
8033
(
7.8
KiB)  TX bytes:
5614
(
5.4
KiB)
vif0.
1
Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP  MTU:
1500
Metric:
1
RX packets:
14
errors:
0
dropped:
0
overruns:
0
frame:
0
TX packets:
18
errors:
0
dropped:
0
overruns:
0
carrier:
0
collisions:
0
txqueuelen:
0
RX bytes:
3325
(
3.2
KiB)  TX bytes:
3671
(
3.5
KiB)
virbr0    Link encap:Ethernet  HWaddr 
00
:
00
:
00
:
00
:
00
:
00
inet addr:
192.168
.
122.1
Bcast:
192.168
.
122.255
Mask:
255.255
.
255.0
UP BROADCAST RUNNING MULTICAST  MTU:
1500
Metric:
1
RX packets:
0
errors:
0
dropped:
0
overruns:
0
frame:
0
TX packets:
14
errors:
0
dropped:
0
overruns:
0
carrier:
0
collisions:
0
txqueuelen:
0
RX bytes:
0
(
0.0
b)  TX bytes:
3053
(
2.9
KiB)
xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP  MTU:
1500
Metric:
1
RX packets:
25
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:
5401
(
5.2
KiB)  TX bytes:
0
(
0.0
b)
xenbr1    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP  MTU:
1500
Metric:
1
RX packets:
30
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:
6468
(
6.3
KiB)  TX bytes:
0
(
0.0
b)
         
       

5. xen虚拟机上的配置

(1) 关闭xen虚拟机

# xm shutdown test01

(2) 修改xen虚拟配置文件

xen虚拟机通常也只有一个网卡，再加一网卡需要修改配置文件。

# vif = [ "mac=00:16:3e:27:ec:b9,bridge=xenbr0", "mac=00:16:3e:1a:00:01,ip=10.10.10.11,bridge=xenbr1" ]

(3) 启动xen虚拟机自动适应硬件配置

# xm create test01

修改eth1网卡IP地址，没有配置文件的话，可以直接复制eth0,修改上面的MAC地址，修改IP地址。

# vi /etc/sysconfig/network-script/ifcfg-eth1

本文只配置了一台xen服务器的网卡改造，另一台也按相同的方式进行配置。

至此,xen服务器双网卡配置完毕，有相同需求的情况可以按以上方式配置改造。

本文出自 “” 博客，请务必保留此出处