12.3. 使用 systemd 运行 DHCP 插件

您可以使用 systemd 单元文件来运行 dhcp 插件。

先决条件

  • container-tools 元数据包已安装。

流程

  1. 创建套接字单元文件： 

    # cat /usr/lib/systemd/system/io.podman.dhcp.socket
[Unit]
Description=DHCP Client for CNI

[Socket]
ListenStream=%t/cni/dhcp.sock
SocketMode=0600

[Install]
WantedBy=sockets.target

  2. 创建服务单元文件： 

    # cat /usr/lib/systemd/system/io.podman.dhcp.service
[Unit]
Description=DHCP Client CNI Service
Requires=io.podman.dhcp.socket
After=io.podman.dhcp.socket

[Service]
Type=simple
ExecStart=/usr/libexec/cni/dhcp daemon
TimeoutStopSec=30
KillMode=process


[Install]
WantedBy=multi-user.target
Also=io.podman.dhcp.socket

  3. 立即启动该服务： 

    # systemctl --now enable io.podman.dhcp.socket

验证

  • 检查套接字的状态： 

    # systemctl status io.podman.dhcp.socket
io.podman.dhcp.socket - DHCP Client for CNI
Loaded: loaded (/usr/lib/systemd/system/io.podman.dhcp.socket; enabled; vendor preset: disabled)
Active: active (listening) since Mon 2022-01-03 18:08:10 CET; 39s ago
Listen: /run/cni/dhcp.sock (Stream)
CGroup: /system.slice/io.podman.dhcp.socket

其他资源