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 <field,...>|all|common specify fields to output
-g, --get-values <field,...>|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 <seconds> 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 up ens33
nmcli d reapply ens33
nmcli d connect ens33
打开网卡
# nmcli c up <网卡>
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 ens33
显示所有活动连接
# nmcli connection show --active
删除一个网卡连接
# nmcli connection delete ens33
给xxx添加一个IP(IPADDR)
# nmcli connection modify ens33 ipv4.addresses 192.168.0.51
给xxx添加一个子网掩码(NETMASK)
# nmcli connection modify ens33 ipv4.addresses 192.168.0.51/24
IP获取方式设置成手动(BOOTPROTO=static/none)
# nmcli connection modify ens33 ipv4.method manual
添加一个ipv4
# nmcli connection modify ens33 +ipv4.addresses 192.168.0.51/24
删除一个ipv4
# nmcli connection modify ens33 -ipv4.addresses 192.168.0.51/24
添加DNS
# nmcli connection modify ens33 ipv4.dns 114.114.114.114
删除DNS
# nmcli connection modify ens33 -ipv4.dns 114.114.114.114
添加一个网关(GATEWAY)
# nmcli connection modify ens33 ipv4.gateway 192.168.0.1
网关和DNS一起写入
# nmcli connection modify ens33 ipv4.dns 114.114.114.114 ipv4.gateway 192.168.0.1
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