centos8下重启网卡命令_Linux——Centos8.2如何重启网卡服务(示例代码)

前言

Centos8已经废弃了network.service,请使用nmcli

内容

[root@localhost ~]# nmcli –help

Usage: nmcli [OPTIONS] OBJECT { COMMAND | help }

OPTIONS

-a, –ask ask for missing parameters

-c, –colors auto|yes|no whether to use colors in output

-e, –escape yes|no escape columns separators in values

-f, –fields |all|common specify fields to output

-g, –get-values |all|common shortcut for -m tabular -t -f

-h, –help print this help

-m, –mode tabular|multiline output mode

-o, –overview overview mode

-p, –pretty pretty output

-s, –show-secrets allow displaying passwords

-t, –terse terse output

-v, –version show program version

-w, –wait set timeout waiting for finishing operations

OBJECT

g[eneral] NetworkManager‘s general status and operations

n[etworking] overall networking control

r[adio] NetworkManager radio switches

c[onnection] NetworkManager‘s connections

d[evice] devices managed by NetworkManager

a[gent] NetworkManager secret agent or polkit agent

m[onitor] monitor NetworkManager changes

命令详解

使用nmcli重新回载网络配置

# nmcli c reload

打开网卡

# nmcli c up

查看网卡信息

# nmcli con

NAME UUID TYPE DEVICE

ens33 36a7b552-ab17-4b2d-afd9-de96c6c935eb ethernet ens33

显示具体的网络接口信息

# nmcli connection show xxx

显示所有活动连接

# nmcli connection show –active

删除一个网卡连接

# nmcli connection delete xxx

给xxx添加一个IP(IPADDR)

# nmcli connection modify xxx ipv4.addresses 192.168.0.51

给xxx添加一个子网掩码(NETMASK)

# nmcli connection modify xxx ipv4.addresses 192.168.0.51/24

IP获取方式设置成手动(BOOTPROTO=static/none)

# nmcli connection modify xxx ipv4.method manual

添加一个ipv4

# nmcli connection modify xxx +ipv4.addresses 192.168.0.51/24

删除一个ipv4

# nmcli connection modify xxx -ipv4.addresses 192.168.0.51/24

添加DNS

# nmcli connection modify xxx ipv4.dns 114.114.114.114

删除DNS

# nmcli connection modify xxx -ipv4.dns 114.114.114.114

添加一个网关(GATEWAY)

# nmcli connection modify xxx ipv4.gateway 192.168.0.1

网关和DNS一起写入

# nmcli connection modify xxx ipv4.dns 114.114.114.114 ipv4.gateway 192.168.0.1