What to do if CentOS7 cannot connect to the network

What to do if CentOS7 cannot connect to the network

Step one: Modify the configuration file

Use vi editor to modify /etc/sysconfig/network-scripts/ifcfg-eth0

Enter the /etc/sysconfig/network-scripts directory (recommended learning: MySQL video tutorial)

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

Change ONBOOT=no in the file to ONBOOT=yes, then save and exit (don’t forget to save!!)

Step 2: Restart the network service

After the modification is completed, you need to restart the network service for it to take effect. Use the following command.

service network restart

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