How to modify the IP address in Centos7 system

How to modify the IP address of Centos7 system?

1. Enter the network configuration file directory

First, make sure to operate under the root user. Enter the network configuration file network-scripts directory.

　2. Find the configuration file we need to modify

Use the ls command to list the files in the directory. The file "ifcfg-ens33" (red box) is the network configuration file we need to modify.

　3. Modify the configuration file

Use the vim command (vi command is also available) to configure the file, we need to modify it BOOTPROTO="static" means changing dhcp to static, modifying ONBOOT="yes" means setting the network card to be enabled at boot, and add

　IPADDR=192.168.0.230 #静态IP
　　GATEWAY=192.168.0.1 #默认网关
　　NETMASK=255.255.255.0 #子网掩码
　　DNS1=192.168.0.1 #DNS 配置
　　DNS2=8.8.8.8 #谷歌地址
　　红框为修改内容，紫框为需要添加的内容。
　　ESC+WQ，保存退出!

below the text. ##4. Restart the network service

Use the service network restart command to restart the network service. (The red box is the command to restart the network service, and the blue box is the status of restarting the network service)

　

5. Check the effect of our changes

Since it is Centos7 now, we use the new command. We enter ip addr to view. (The red box is the view command, the blue box is the network card status)

Related reference:

centOS tutorial

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