How to solve the problem that CentOS7 cannot connect to the Internet

How to solve the problem that CentOS7 cannot connect to the Internet?

I downloaded CentOS 7 and installed it in the virtual machine. I found that I could not connect to the Internet and kept prompting Cannot find a valid baseurl for repo: base/7/x86_64

Share here how to solve this problem.

Step1, modify the configuration file

使用 vi 编辑器修改 /etc/sysconfig/network-scripts/ifcfg-eth0
进入 /etc/sysconfig/network-scripts 目录
cd /etc/sysconfig/network-scripts打开配置文件
vi ifcfg-ens33这里可能你的文件名不是这个，但是找前面是 ifcfg-ens 的就是了
将文件里的 ONBOOT=no，改为ONBOOT=yes，然后保存并退出（不要忘记保存！！）

##Step2, restart the network service

After the modification is completed The network service needs to be restarted for it to take effect. Use the following command.

service network restart

Related references:

centOS tutorial

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