linux centos网卡配置文件详解

网卡配置文件路径
centos的网卡一般在/etc/sysconfig/network-scripts/
文件名一般为ifcfg-eno和ifcfg-eth,可以先使用ip a 查看对应的网卡进行更改
配置文件解析

DEVICE=ens33                                                            # 网卡的设备名称
NAME=ens33                                                              # 网卡设备的别名
TYPE=Ethernet                                                           #网络类型：Ethernet以太网
BOOTPROTO=none                      #引导协议：static静态、dhcp动态获取、none不指定（可能出现问题
DEFROUTE=yes                                                          #启动默认路由
IPV4_FAILURE_FATAL=no                                          #不启用IPV4错误检测功能
IPV6INIT=yes                                                                #启用IPV6协议
IPV6_AUTOCONF=yes                                               #自动配置IPV6地址
IPV6_DEFROUTE=yes                                              #启用IPV6默认路由
IPV6_FAILURE_FATAL=no                                       #不启用IPV6错误检测功能
UUID=sjdfga-asfd-asdf-asdf-f82b                               #网卡设备的UUID唯一标识号
ONBOOT=yes                                                              #开机自动启动网卡
DNS=114.114.114.114                                                #DNS域名解析服务器的IP地址 可以多设置一个DNS1
IPADDR=192.168.1.1                                              #网卡的IP地址
PREFIX=24                                                              #子网前缀长度
GATEWAY=192.168.1…254                                             #默认网关IP地址

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