2021-03-11：Ubuntu20.04设置固定ip

需要编辑/etc/netplan/*.yaml，我们可以查看一下内容
cd /etc/netplan/*.yaml
cat ./*.yaml

# This is the network config written by 'subiquity'
network:
  ethernets:
    enp5s0:
     dhcp4:  true
  version: 2

备份一下内容，我们开始修改
sudo cp ./*.yaml ./*.yaml.backup
sudo vim ./*.yaml

# This is the network config written by 'subiquity'
network:
  ethernets:
    enp5s0:
     dhcp4:  false
     addresses: [192.168.31.201/24]
     gateway4: 192.168.31.1
     nameservers:
             addresses: [192.168.31.1,8.8.8.8]

  version: 2

然后应用修改
sudo netplan --debug apply
使用ifconfig可以查看当前的ip已经成功更改。