CentOS解决Device eth0 does not seem to be present的问题

最新推荐文章于 2024-08-07 12:16:21 发布

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最新推荐文章于 2024-08-07 12:16:21 发布

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本文介绍了解决CentOS虚拟机克隆后网络配置失效的问题。通过修改网卡名称和MAC地址设置，实现网络服务重启成功。

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在VMware里克隆出来的CentOS Linux，用作模板，重新部署后，开机

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]

CentOS Linux解决Device eth0 does not seem to be present

原因：模板部署虚拟机后，网卡的mac地址变了

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"

看到上面两个网卡，eth0是导出模板前的网卡，eth1是现在部署后的模板，所以现在要把网卡改成eth1，步骤如下：

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"
保存，退出后：

# mv /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth1

最后，重启网络

# service network restart
或者

# /etc/init.d/network restart

正常了。