netplan配置快速指南

netplan 是 Ubuntu 17.10 及更高版本中用于配置网络的工具，它使用 YAML 格式的配置文件来管理网络接口。

netplan命令的基本用法

• netplan get 获取当前配置，默认会打印 /etc/netplan/ 目录下文件的内容
• netplan generate 根据管理器（NetworkManager 或 systemd-networkd）生成配置
• netplan try 检查配置文件合法性
• netplan status 查看网络状态

DHCP

cat >/etc/netplan/enp5s0.yaml<<EOF
network:
  ethernets:
    enp5s0:
      dhcp4: true
  version: 2
EOF
chmod 400 /etc/netplan/enp5s0.yaml
netplan apply
ip addr

设置DHCP自动获取IP地址，但DNS使用127.0.0.1, 不使用DHCP 获取的DNS服务器

network:
  version: 2
  ethernets:
    enp1s0:
      dhcp4: true
      dhcp4-overrides:
        use-dns: false
      nameservers:
        addresses: [127.0.0.1]

固定IP配置

单 IP 的例子

network:
  ethernets:
    enp1s0:
      addresses: [10.0.7.242/21]
      gateway4: 10.0.0.1
      nameservers:
        addresses: [114.114.114.114]
  version: 2

多 IP 的例子

network:
  version: 2
  renderer: networkd
  ethernets:
    eno12399:
      dhcp4: true
    eno12409:
      dhcp4: true
    eno12419:
      dhcp4: true
    eno12429:
      dhcp4: true
    eno8303:
      addresses:
        - 119.167.151.90/26
        - 119.167.151.91/26
        - 150.138.181.107/26
        - 150.138.181.108/26
        - 150.138.181.109/26
      routes:
        - to: 0.0.0.0/0
          via: 119.167.151.65
          metric: 100
        - to: 0.0.0.0/0
          via: 150.138.181.65
          metric: 150
      nameservers:
        addresses: [114.114.114.114,202.102.134.68]
    eno8403:
      dhcp4: true
  version: 2

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