类别:CentOS / 日期:2020-06-07 / 浏览:720 / 评论:0

ifconfig...没有看到eth0.。然后重启网卡又报下面错误。

---------------------------------------------------

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

方案一

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:89:97", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x1022:0x2000 (pcnet32)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:50:bd:17", 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。


方案二

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:89:97", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x1022:0x2000 (pcnet32)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:50:bd:17", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

-----------------------------------------------

这里,我们修改70-persistent-net.rules文件,将eth0的Mac地址修改为eth1的Mac地址,即将00:0c:29:8f:89:97修改为00:0c:29:50:bd:17,同时我们删除如下信息:

-----------------------------------------

# PCI device 0x1022:0x2000 (pcnet32)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:50:bd:17", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

-----------------------------------------

修改后的70-persistent-net.rules文件如下:

-----------------------------------------

# 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:29:50:bd:17", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

------------------------------------------------

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


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

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。


如果按照方案二操作后,仍存在问题,那我们就直接重启系统,之后就正常了。反正我是重启系统后正常的。



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