Device eth0 does not seem to be present,delaying initialization-优快云博客

本文详细介绍了在使用VirtualBox复制虚拟机时遇到网卡启动失败的问题，通过修改配置文件和重启系统，成功解决了eth0网卡无法启动的故障，并提供了完整的解决步骤和关键操作。

VirtualBox复制虚拟机后，发现新的虚拟机网卡启动不了。

ifconfig -a ...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]

修改配置文件：vi /etc/udev/rules.d/70-persistent-net.rules

vi 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 0x8086:0x100e (e1000)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:48:20:62", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x8086:0x100e (e1000)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:c2:0c:25", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

发现有两个网卡，etho和eth1，并且两个MAC地址也不一样，实际上并没有eth1网卡。

处理方法：

1、删除或生命名这个文件：70-persistent-net.rules

2、Ifconfig –a 查看mac

3、修改网卡配置文件中的HWADDR为ipcofnig –a 看到的MAC地址

[root@namenode1 rules.d]# vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

HWADDR=08:00:27:C2:0C:25

TYPE=Ethernet

UUID=048c738b-8b3a-4deb-9478-e17c760b92bd

ONBOOT=yes

NM_CONTROLLED=yes

BOOTPROTO=static

IPADDR=192.168.1.139

MASK=255.255.255.0

GATEWAY=192.168.1.1

重启系统，reboot –h now

重启后，查看文件70-persistent-net.rules

[root@namenode1 rules.d]# vi 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 0x8086:0x100e (e1000) (custom name provided by external tool)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:c2:0c:25", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0

只有一个etho，正常。