Linux centos6.7网卡配置

系统安装完成后

以此执行以下命令 相当于自动获取IP地址

setup命令——Network configuration———Device configuration———eth0 依次保存退出

实际上就是修改    /etc/sysconfig/network-scripts/ifcfg-eth0   的内容

TYPE=Ethernet

UUID=8f317ed7-9c85-4a67-bd89-a2b30ff86517

ONBOOT=yes

NM_CONTROLLED=no

BOOTPROTO=dhcp

USERCTL=no

PEERDNS=yes

IPV6INIT=no

一条命令修改ONBOOT=no

sed –I ‘s#ONB00T=no#ONBOOT=yes#g’ /etc/sysconfig/network-scripts/ifcfg-eth0

网卡重启 service network restart

关闭：ifdown eth0  开启：ifup eth0

期间我克隆了一个虚拟机  上述操作完成后 发现怎么都重启不了网卡，网上查了一些资料最后成功了 方法如下：

故障现象：

service network restart
Shutting down loopback insterface:                                                                                                     [  OK  ]
Bringing up loopback insterface:                                                                                                          [  OK  ]
Bringing up interface eth0:  Device eth0 does not seem to be present,delaying initialization.                    [FAILED]

解决办法：

首先，打开/etc/udev/rules.d/70-persistent-net.rules内容如下面例子所示：

# vi /etc/udev/rules.d/70-persistent-net.rules
# This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.
# PCI device 0x1022:0x2000 (pcnet32)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:8f:89:9
7", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x1022:0x2000 (pcnet32)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:50:bd:1
7", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

记录下，eth1网卡的mac地址00:0c:29:50:bd:17

接下来，打开/etc/sysconfig/network-scripts/ifcfg-eth0

# vi /etc/sysconfig/network-scripts/ifcfg-eth0

将 DEVICE="eth0"  改成  DEVICE="eth1"  ,
将 HWADDR="00:0c:29:8f:89:97" 改成上面的mac地址  HWADDR="00:0c:29:50:bd:17"

最后，重启网络

# service network restart
或者

# /etc/init.d/network restart

正常了。