How to solve the problem of being unable to access the Internet after cloning a CentOS virtual machine

How to solve the problem of being unable to access the Internet after cloning a CentOS virtual machine?

1. Problem Description

After cloning the CentOS virtual machine, due to inconsistent network card information, the Internet cannot be accessed or the "sercice network restart" command fails

[root@linuxidc 桌面]# ifconfig　　//查看当前网卡信息
[root@linuxidc 桌面]# cd /etc/sysconfig/network-scripts　　//进入网卡配置文件目录[root@linuxidc network-scripts]# ls　　//查看网卡配置文件中的网卡信息

2. Cause analysis

Due to the cloned system, the system only modified the name and MAC of the virtual machine, etc., and in / A line of device name named eth1 is added to the etc/udev/rules.d/70-persistent-net.rules file

3. Solution

1. Modify the files /etc/udev/rules.d/70-persistent-net.rules and /etc/sysconfig/network-scripts/ifcfg-eth0 to make two The device name in the file corresponds to the MAC address

[root@linuxidc ~]# gedit /etc/udev/rules.d/70-persistent-net.rules /etc/sysconfig/network-scripts/ifcfg-eth0

2. Save after modification, then restart the virtual machine and check the network card information again , found to be normal

Related reference:centOS tutorial

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