Ubuntu 网卡配置

lsb_release -a

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.4 LTS
Release:        20.04
Codename:       focal

配置须知：Ubuntu在17.10开始，网卡配置不在​/etc/network/interfaces中，而是放在​/etc/netplan/ 目录中的
YAML文件中

cd /etc/netplan/
root:/etc/netplan$ ls
00-installer-config.yaml   //网卡文件

vi 00-installer-config.yaml
network:
  ethernets:
    eno1:
      dhcp4: no
      addresses: [X.X.X.X/掩码]  //地址及掩码
      optional: true
      gateway4: X.X.X.X    //网关
      nameservers:
        addresses: [X.X.X.X]  //DNS

  version: 2

netplan apply