配置DHCP服务(华硕路由器版)

1. 登陆梅林固件官网，基于路由器型号选择下载对应的固件

2. 安装对应的固件，如下图所示

   

3. 设置格式化JFFS分区，然后重启路由器

   

4. 在/jffs/configs目录下增加dnsmasq.conf.add文件配置dhcp服务，指向tftp服务器地址，配置内容如下图所示（打码处为tftp服务器地址）

   

5. 重启dhcp服务

service restart_dnsmasq

配置TFTP服务

1. 编辑Dockerfile构建镜像，需要新建entrypoint.sh和tftpd-hpa.conf，内容如下

   [jason@Jason1991 tmp]$ cat Dockerfile 
   FROM ubuntu:20.04
   
   RUN apt-get update && apt-get install -y \
       tftpd-hpa \
       tcpdump
   
   RUN mkdir -p /tftp /var/log/tftp \
       && chmod -R 777 /tftp /var/log/tftp
   
   COPY tftpd-hpa.conf /etc/default/tftpd-hpa
   COPY entrypoint.sh /entrypoint.sh
   RUN chmod +x /entrypoint.sh
   
   EXPOSE 69/udp
   
   ENTRYPOINT ["/entrypoint.sh"]
   
   [jason@Jason1991 tmp]$ cat entrypoint.sh 
   #!/bin/bash
   touch /var/log/tftp/tftpd.log
   chmod 666 /var/log/tftp/tftpd.log
   
   service tftpd-hpa start
   tail -F /var/log/tftp/tftpd.log
   
   [jason@Jason1991 tmp]$ cat tftpd-hpa.conf 
   # /etc/default/tftpd-hpa
   TFTP_USERNAME="root"
   TFTP_DIRECTORY="/tftp"
   TFTP_ADDRESS="0.0.0.0:69"
   TFTP_OPTIONS="-l -s -c -vv"
   TFTP_LOGFILE="/var/log/tftp/tftpd.log"

2. 编辑docker-compose.xml

   version: '3'
   
   services:
     tftp-server:
       image: ubuntu-tftp:latest
       container_name: tftp-server       
       network_mode: "host"
       volumes:
         - /share/pxe/tftp:/tftp    # 将 TFTP 目录挂载到容器内
       restart: unless-stopped

3. 使用docker-compose运行容器启动tftp服务

4. 在tftp新建如下目录结构，使用网络引导时会下载grubx64.efi文件，grub.cfg为grub的配置文件,os-images目录下存放操作系统安装镜像（从iso文件拷贝）

   

   jason@ubuntu-2004:/mnt/qnap_share/pxe/tftp$ cat grub/grub.cfg 
   set timeout=5
   set debug=all
   menuentry "Boot from local disk" {
     exit
   }
   menuentry "Install Ubuntu 24.04 desktop(UEFI)" {
     set root=(tftp,192.168.50.218)
     linux /os-images/ubuntu-24.04-desktop/casper/vmlinuz root=/dev/nfs nfsroot=192.168.50.218:/pxe/tftp/os-images/ubuntu-24.04-desktop/ netboot=nfs ip=dhcp ignore_uuid loglevel=7 ro
     initrd /os-images/ubuntu-24.04-desktop/casper/initrd
   }
   menuentry "Install Ubuntu 24.04 server(UEFI)" {
     set root=(tftp,192.168.50.218)
     linux /os-images/ubuntu-24.04-server/casper/vmlinuz root=/dev/nfs nfsroot=192.168.50.218:/pxe/tftp/os-images/ubuntu-24.04-server/ netboot=nfs ip=dhcp ignore_uuid loglevel=7 ro
     initrd /os-images/ubuntu-24.04-server/casper/initrd
   }
   menuentry "Install Deepin 25(UEFI)" {
     set root=(tftp,192.168.50.218)
     linux /os-images/deepin-25/live/vmlinuz-6.6 boot=live union=overlay livecd-installer locales=zh_CN.UTF-8 nfsroot=192.168.50.218:/pxe/tftp/os-images/deepin-25/ netboot=nfs ip=dhcp ignore_uuid loglevel=7 ro console=tty splash nomodeset --
     initrd /os-images/deepin-25/live/initrd-6.6
   }
   menuentry "Try Deepin 25(UEFI)" {
     set root=(tftp,192.168.50.218)
     linux /os-images/deepin-25/live/vmlinuz.efi boot=live union=overlay locales=zh_CN.UTF-8 nfsroot=192.168.50.218:/pxe/tftp/os-images/deepin-25/ netboot=nfs ip=dhcp ignore_uuid loglevel=7 ro console=tty splash nomodeset --
     initrd /os-images/deepin-25/live/initrd
   }