配置静态地址的方法
图形界面配置
略（主要是需要截图好几张，但是本身操作又简单就不写了）
修改配置文件
配置文件路径在/etc/netplan/xxx.yaml（这里每个人的xxx可能不一样）
默认如果开启了dhcp自动获取地址的话应该是这样
root@Ubuntu:~# cat /etc/netplan/50-cloud-init.yaml
# This file is generated from information provided by the datasource. Changes
# to it will not persist across an instance reboot. To disable cloud-init's
# network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
version: 2
ethernets:
ens3:
dhcp4: true
match:
macaddress: fa:16:3e:20:57:4e
mtu: 1500
set-name: ens3
如果需要修改为静态地址可以先找出当前IP然后配置为一样的
root@Ubuntu:~# ip a |grep "global.*ens3" #这里的ens3是对应的网卡名
inet 10.10.21.170/24 brd 10.10.21.255 scope global dynamic ens3
接下来就是将配置文件的IP修改为10.10.21.170/24
root@Ubuntu:~# cat /etc/netplan/50-cloud-init.yaml
# This file is generated from information provided by the datasource. Changes
# to it will not persist across an instance reboot. To disable cloud-init's
# network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
version: 2
ethernets:
ens3:
dhcp4: false #这里也可以写no
addresses: [10.10.21.170/24]
optional: true
gateway4: 10.10.21.254
nameservers:
addresses: [223.5.5.5]
match:
macaddress: fa:16:3e:20:57:4e
mtu: 1500
set-name: ens3
root@Ubuntu:~# netplan apply
NetworkManager修改
如果没有命令的话需要先安装NetworkManager
root@Ubuntu:~# apt-get install network-manager
接下来启动NetworkManager管理网卡
修改NewworkManager配置文件
root@Ubuntu:~# cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=true #这里默认是false，需要修改为true
[device]
wifi.scan-rand-mac-address=no
修改/etc/netplan/50-cloud-init.yaml
root@Ubuntu:~# cat /etc/netplan/50-cloud-init.yaml
# This file is generated from information provided by the datasource. Changes
# to it will not persist across an instance reboot. To disable cloud-init's
# network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
version: 2
renderer: NetworkManager #必须修改否则NetworkManager无法管理
修改完成之后重启服务
root@Ubuntu:~# systemctl restart network-manager
root@Ubuntu:~# nmcli device
DEVICE TYPE STATE CONNECTION
ens13 ethernet connected ens3.1
ens3 ethernet connected ens3
如果上面没有改的话，这里的state会是unmanaged
nmtui修改
这种也是类图形界面
root@Ubuntu:~# nmtui
然后按提示一步步修改即可，修改完了记得activate激活配置
nmcli
命令行修改
root@Ubuntu:~# nmcli connection modify ens3.1 ipv4.addresses 10.10.30.28/24 ipv4.gateway 10.10.30.254 ipv4.method manual ipv4.dns 114.114.114.114 autoconnect yes
root@Ubuntu:~# nmcli connection up ens3.1
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)
nmcli修改网卡名字
很多时候用来NetworkManager会生成一些奇奇怪怪的网卡名字，比如"Wired connection 1"，看起来就难受，用起来有时候也不方便
root@Ubunt:~# nmcli connection modify "Wired connection 1" connection.id ens33