systemd-networkd.service 服务介绍

systemd-networkd.service 通过一个简单的 ini 风格的文本文件，对网络配置进行编码以匹配网络接口

介绍

• 配置文件在 /etc/systemd/network 目录下
• 修改配置文件后，需要重启服务 systemctl restart systemd-networkd.service

示例

配置静态 IP

• /etc/systemd/network/50-static.network

[Match]
Name=enp2s0

[Network]
Address=192.168.0.15/24
Gateway=192.168.0.1

配置 DHCP

• /etc/systemd/network/80-dhcp.network

[Match]
Name=en*

[Network]
DHCP=yes

IPv6 Prefix Delegation (DHCPv6 PD)

• /etc/systemd/network/55-dhcpv6-pd-upstream.network

[Match]
Name=enp1s0

[Network]
DHCP=ipv6

• /etc/systemd/network/55-dhcpv6-pd-downstream.network

[Match]
Name=enp2s0

[Network]
DHCPPrefixDelegation=yes
IPv6SendRA=yes

网桥配置

• /etc/systemd/network/25-bridge-static.netdev

[NetDev]
Name=bridge0
Kind=bridge

• /etc/systemd/network/25-bridge-static.network

[Match]
Name=bridge0

[Network]
Address=192.168.0.15/24
Gateway=192.168.0.1
DNS=192.168.0.1

• /etc/systemd/network/25-bridge-slave-interface-1.network

[Match]
Name=enp2s0

[Network]
Bridge=bridge0

• /etc/systemd/network/25-bridge-slave-interface-2.network

[Match]
Name=wlp3s0

[Network]
Bridge=bridge0

网桥与 VLAN

• /etc/systemd/network/25-bridge-slave-interface-1.network

[Match]
Name=enp2s0

[Network]
Bridge=bridge0

[BridgeVLAN]
VLAN=1-32
PVID=42
EgressUntagged=42

[BridgeVLAN]
VLAN=100-200

[BridgeVLAN]
EgressUntagged=300-400

隧道

# /etc/systemd/network/25-tunnels.network
[Match]
Name=ens1

[Network]
Tunnel=ipip-tun
Tunnel=sit-tun
Tunnel=gre-tun
Tunnel=vti-tun

# /etc/systemd/network/25-tunnel-ipip.netdev
[NetDev]
Name=ipip-tun
Kind=ipip

# /etc/systemd/network/25-tunnel-sit.netdev
[NetDev]
Name=sit-tun
Kind=sit

# /etc/systemd/network/25-tunnel-gre.netdev
[NetDev]
Name=gre-tun
Kind=gre

# /etc/systemd/network/25-tunnel-vti.netdev
[NetDev]
Name=vti-tun
Kind=vti

bond 设备

# /etc/systemd/network/30-bond1.network
[Match]
Name=bond1

[Network]
DHCP=ipv6
# /etc/systemd/network/30-bond1.netdev
[NetDev]
Name=bond1
Kind=bond
# /etc/systemd/network/30-bond1-dev1.network
[Match]
MACAddress=52:54:00:e9:64:41

[Network]
Bond=bond1
# /etc/systemd/network/30-bond1-dev2.network
[Match]
MACAddress=52:54:00:e9:64:42

[Network]
Bond=bond1

无线适配器

• /etc/systemd/network/25-wireless.network

[Match]
Name=wlp2s0

[Network]
DHCP=yes
IgnoreCarrierLoss=3s

扩展

• linux 网络配置软件包括
  • network
  • NetworkManager
  • netctl
  • netplan
  • systemd-networkd 等