How to modify and configure IP, gateway, subnet mask, and DNS under Linux system
1. View network card information
First of all, we can use the following two commands to query the network card information and see which network card we are using
ifconfig
ip addr
Second, find the network card configuration file
Then we enter the following directory and find the network card file we used above
#进入目录
cd /etc/sysconfig/network-scripts/
#查看文件
ll
3. Modify network card information
Then we open the configuration file to modify
#每个人的配置文件名称都不一样
vi ifcfg-eno16777728
Some new machines may not have the following ones, we can add
###新增
#ip地址
IPADDR="192.168.19.201"
#子网掩码
NETMASK="255.255.255.0"
#网关
GATEWAY="192.168.19.2"
#DNS
DNS1="192.168.19.2"
Then wq! save and exit
Fourth, restart the network card
service network restart
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