30.2.2. 为 EFI 配置 PXE 引导

  1. 如果还没有安装 tftp-server，请运行 yum install tftp-server。
  2. In the tftp-server config file at /etc/xinetd.d/tftp, change the disable parameter from yes to no.
  3. Create a directory within tftpboot for the EFI boot images, and then copy them from your boot directory. In these examples we will name the subdirectory pxelinux, but any other name could be used. 
    mkdir /var/lib/tftpboot/pxelinux
cp /boot/efi/EFI/redhat/grub.efi /var/lib/tftpboot/pxelinux/bootx64.efi
  4. Configure your DHCP server to use the EFI boot images packaged with GRUB. (If you do not have a DHCP server installed, refer to the DHCP Servers chapter in the Red Hat Enterprise Linux Deployment Guide.)
    /etc/dhcp/dhcpd.conf 中的示例配置如下： 
      option space PXE;
  option PXE.mtftp-ip    code 1 = ip-address;
  option PXE.mtftp-cport code 2 = unsigned integer 16;
  option PXE.mtftp-sport code 3 = unsigned integer 16;
  option PXE.mtftp-tmout code 4 = unsigned integer 8;
  option PXE.mtftp-delay code 5 = unsigned integer 8;
  option arch code 93 = unsigned integer 16; # RFC4578

  subnet 10.0.0.0 netmask 255.255.255.0 {
          option routers 10.0.0.254;
          range 10.0.0.2 10.0.0.253;

          class "pxeclients" {
                  match if substring (option vendor-class-identifier, 0, 9) = "PXEClient";
                  next-server 10.0.0.1;

                  if option arch = 00:06 {
                          filename "pxelinux/bootia32.efi";
                  } else if option arch = 00:07 {
                          filename "pxelinux/bootx64.efi";
                  } else {
                          filename "pxelinux/pxelinux.0";
                  }
          }

          host example-ia32 {
                  hardware ethernet XX:YY:ZZ:11:22:33;
                  fixed-address 10.0.0.2;
          }
  }
  5. Add a config file to /var/lib/tftpboot/pxelinux. The file should either be named efidefault or named after the IP address, converted into hexadecimal format without delimiters. For example, if your machine's IP address is 10.0.0.1, the filename would be 0A000001.
    A sample config file at /var/lib/tftpboot/pxelinux/efidefault might look like: 
    default=0
timeout=1
splashimage=(nd)/splash.xpm.gz
hiddenmenu
title RHEL
        root (nd)
        kernel /rawhide-x86_64/vmlinuz
        initrd /rawhide-x86_64/initrd.img
    关于如何指定安装源的步骤，请参考 第 7.1.3 节 “其他引导选项”。
  6. 将 splash 映像复制到 tftp 根目录下： 
    cp /boot/grub/splash.xpm.gz /var/lib/tftpboot/pxelinux/splash.xpm.gz
  7. 将引导映像复制到 tftp 根目录下： 
    cp /path/to/x86_64/os/images/pxeboot/{vmlinuz,initrd.img} /var/lib/tftpboot/pxelinux/rhel6/
  8. Boot the client system, and select the network device as your boot device when prompted.