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CentOS6.2网卡设置

程序员文章站 2022-05-27 13:38:06
下面主要介绍在centos6.2下使用系统自带的bonding进行网卡绑定的详细步骤。 注意:请在配置前关闭networkmanager服务[root@h63 ~]# s...

下面主要介绍在centos6.2下使用系统自带的bonding进行网卡绑定的详细步骤。

注意:请在配置前关闭networkmanager服务
[root@h63 ~]# service networkmanager status && service networkmanager start
网卡绑定一次可以绑定多个网卡,你可以使用ifconfig -a查看你的网卡信息,例如:
[root@h63 ~]# ifconfig -a

em1       link encap:ethernet  hwaddr 78:2b:cb:30:08:03
          up broadcast running slave multicast  mtu:1500  metric:1
          rx packets:48236002 errors:0 dropped:0 overruns:0 frame:0
          tx packets:16156472 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          rx bytes:4838973371 (4.5 gib)  tx bytes:1301118550 (1.2 gib)
          interrupt:36 memory:d6000000-d6012800

em2       link encap:ethernet  hwaddr 78:2b:cb:30:08:05
          up broadcast running slave multicast  mtu:1500  metric:1
          rx packets:42385720 errors:0 dropped:0 overruns:0 frame:0
          tx packets:7283526 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          rx bytes:4307780986 (4.0 gib)  tx bytes:466840625 (445.2 mib)
          interrupt:48 memory:d8000000-d8012800

em3       link encap:ethernet  hwaddr 78:2b:cb:30:08:07
          broadcast multicast  mtu:1500  metric:1
          rx packets:0 errors:0 dropped:0 overruns:0 frame:0
          tx packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          rx bytes:0 (0.0 b)  tx bytes:0 (0.0 b)
          interrupt:32 memory:da000000-da012800

em4       link encap:ethernet  hwaddr 78:2b:cb:30:08:09 
          broadcast multicast  mtu:1500  metric:1
          rx packets:0 errors:0 dropped:0 overruns:0 frame:0
          tx packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          rx bytes:0 (0.0 b)  tx bytes:0 (0.0 b)
          interrupt:42 memory:dc000000-dc012800


这里有4个网卡,分别是em1、em2、em3和em4,我们把em1和em2做一个绑定,绑定模式为6(关于网卡绑定模式的介绍请看linux网卡绑定探析),首先我给给网卡绑定后的设备起个名字bond0(名称可以自定义),并创建:
[root@h63 ~]# vim /etc/sysconfig/network-scripts/ifcfg-bond0
device=bond0        #设备名称
bootproto=static      #静态ip
onboot=yes          #自动启动
ipaddr=172.16.16.63    #设备绑定的ip
gateway=172.16.23.254       #设备绑定的网关
netmask=255.255.248.0    #设备绑定的掩码
type=ethernet         #设备绑定的类型

编辑需要绑定的网卡:
[root@h63 ~]# vim /etc/sysconfig/network-scripts/ifcfg-em1

device=em1
bootproto=none
onboot=yes
master=bond0  #绑定后的设备名称
slave=yes
type=ethernet

[root@h63 ~]# vim /etc/sysconfig/network-scripts/ifcfg-em2

device=em2
bootproto=none
onboot=yes
master=bond0  #绑定后的设备名称
slave=yes
type=ethernet
说明:配置网卡时不要填写ip地址和mac地址

配置加载模式设置:
[root@h63 ~]# vim /etc/modprobe.conf

alias bond0 bonding
options bond0 miimon=100 mode=6

说明:mode是网卡绑定的模式,此处是模式6

也可以在/etc/modprobe.d/下创建一个文件:
[root@h63 ~]# vim /etc/modprobe.d/bond

alias bond0 bonding
options bond0 miimon=100 mode=6

绑定配置完成,重启网络服务
[root@h63 ~]#service network restart

查看网卡绑定的情况:

[root@h63 ~]# cat /proc/net/bonding/bond0
ethernet channel bonding driver: v3.6.0 (september 26, 2009)

bonding mode: adaptive load balancing
primary slave: none
currently active slave: em1
mii status: up
mii polling interval (ms): 100
up delay (ms): 0
down delay (ms): 0

slave interface: em1
mii status: up
speed: 1000 mbps
duplex: full
link failure count: 0
permanent hw addr: 78:2b:cb:30:08:03
slave queue id: 0


slave interface: em2
mii status: up
speed: 1000 mbps
duplex: full
link failure count: 0
permanent hw addr: 78:2b:cb:30:08:05
slave queue id: 0

至此,网卡绑定就完成了。有不对的地方,还请指教。