6.2. 为网络引导配置 DHCPv4 服务器

流程

1. 安装 DHCP 服务器：

   # dnf install kea

2. 设置 DHCPv4 服务器。在 /etc/kea/kea-dhcp4.conf 文件中输入以下配置。替换地址以匹配您的网卡。

   {
     "Dhcp4": {
       "interfaces-config": {
         "interfaces": [ "enp1s0" ]
       },
       "subnet4": [
         {
           "id": 1,
           "subnet": "192.168.124.0/24",
           "pools": [
             {
               "pool": "192.168.124.100 - 192.168.124.200"
             }
           ],
           "option-data": [
             {
               "space": "dhcp4",
               "name": "routers",
               "code": 3,
               "data": "192.168.124.10"
             },
             {
               "space": "dhcp4",
               "name": "domain-name-servers",
               "code": 6,
               "data": "192.168.124.10"
             }
           ]
         }
       ],
       "client-classes": [
         {
           "name": "uefi PXE Clients",
           "test": "substring(option[60].hex,0,9) == 'PXEClient' and option[93].hex == 0x0007",
           "next-server": "192.168.124.2",
           "boot-file-name": "/uefi/BOOT/BOOTX64.EFI"
         },
         {
           "name": "bios PXE Clients",
           "test": "substring(option[60].hex,0,9) == 'PXEClient' and option[93].hex == 0x0000",
           "next-server": "192.168.124.2",
           "boot-file-name": "syslinux/pxelinux.0"
         },
         {
           "name": "uefi HTTP Clients",
           "test": "substring(option[60].hex,0,10) == 'HTTPClient' and option[93].hex == 0x0007",
           "option-data": [
             {
               "space": "dhcp4",
               "name": "vendor-class-identifier",
               "code": 60,
               "data": "HTTPClient"
             }
           ],
           "next-server": "192.168.124.2",
           "boot-file-name": "http://192.168.124.2/uefi/BOOT/BOOTX64.EFI"
         }
       ]
     }
   }

3. 启动 DHCPv4 服务：

   # systemctl enable --now kea-dhcp4