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Yusuke arakawa
Yusuke arakawa

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iPXE chainloading to use dnsmasq and proxydhcp

#networkboot #ipxe #dnsmasq #proxydhcp

I want to try chainloading.
tftp is very slow and to transfer a little data.
http is fast and to able to transfer more heavy data.
It is underline figure that chainloading.

LAN Boot > dhcp-boot > undionly.kpxe from tftpd > boot_menu.ipxe from local httpd > global httpd boot
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Environment

I'm not Network Administrator.
I cannot change DHCP-Server Setting.
So, I use Proxy DHCP.

The proxyDHCP server providing TFTP server IP address and name of the NBP only to PXE identified booting clients. 1

To use proxyDHCP Major software is Dnsmasq.
Dnsmasq provides network infrastructure.
Dnsmasq provides network boot and proxy-dhcp,too.
I use only network boot and proxy-dhcp.
Dnsmasq can install to use yum or apt-get.

  • Server
    • Debian Wheezy (Linux pxeserver 3.2.0-4-amd64 #1 SMP Debian 3.2.78-1 x86_64 GNU/Linux)
    • ECS 945GCT-M
    • Intel(R) Pentium(R) Dual CPU E2160 @1.80GHz
    • Dnsmasq 2.62-3+deb7u3
    • Proxy DHCP
    • iPXE (undionly.kpxe)
  • Clilent
    • Desktop PC
    • ECS G45T-M5
    • Realtec PCIe GBE Family Controller
    • Intel UNDI,PXE-2.0 (bulid 082)
    • Realtek RTL8139(A/B/C)/RTL8130 PCI Fast Ethernet Controller v2.11
  • Network
    • 172.20.0.0/16
    • GW
    • 172.20.0.254
    • DHCP-Server
    • 172.20.0.70

Setup

  1. dnsmasq install
  2. dnsmasq config Setting
  3. iPXE Source Get from git
  4. iPXE Build to undionly.kpxe
  5. deploy undionly.kpxe
  6. web boot ipxe menu
  7. Let's try boot.

Dnsmasq

At First,
I install dnsmasq.
I often use debian and ubuntu.
CentOS/RedHat's dnsmasq is same package name and same configuration file destination.

install

Debian/Ubuntu

$ sudo apt-get install dnsmasq
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Redhat/CentOS

$ sudo yum install dnsmasq
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Settings

Debian/Ubuntu/CentOS/Redhat

$ cat /etc/dnsmasq.conf | grep -v -e ^# -e ^$ dhcp-range=172.20.0.0,proxy dhcp-boot=tag:!ipxe,undionly.kpxe,172.20.0.225 dhcp-match=set:ipxe,175 # gPXE/iPXE sends a 175 option. dhcp-boot=tag:!ipxe,undionly.kpxe dhcp-boot=http://172.20.0.225/a.ipxe,172.20.0.225,172.20.0.225 pxe-service=tag:!ipxe,x86PC,"splash",undionly.kpxe enable-tftp tftp-root=/var/ftpd log-queries conf-dir=/etc/dnsmasq.d
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iPXE

It is easy to download from undionly.kpxe.
But I want to build source over one years age.
undionly.kpxe to build　from source show parent code,
when chainloading.
I want to check parent hash code.
I want to check fix date from parent hash code.
So, I get source form git repository and build it.

Get Source

I need to install git.
I install git-core As described below

$ sudo apt-get install git-core
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I need underline package to build iPXE.

  • gcc
  • binutils
  • make
  • perl
  • syslinux
  • liblzma
  • xz

I install underline.

$ sudo apt-get install gcc,binutils,make,perl $ sudo apt-get install syslinux,lzma-dev,liblzma5
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I get ipxe source to my current directory from git repository.

I execute git as underline.

$ cd ~ $ git clone git://git.ipxe.org/ipxe.git
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Build

It is ipxe direcotry in current directory.
I enter into ipxe direcotry as underline and build undionly.kpxe.

$ cd ~/ipxe/source $ make bin/undionly.kpxe
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deploy 

$ cd ~/ipxe/source $ mv bin/undionly.kpxe /var/ftpd
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httpd

I prepare apache2.

You may prepare httpd that you like nginx, perl's or python's simple one liner web server...etc.

Install 

$ sudo apt-get install apache2
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DocumentRoot

Debian and Ubuntu's apache2 is virtual host default on.
Default DocumentRoot is /var/www.

Check virtual hosts

$ cat /etc/apache2/apache2.conf | grep sites-enabled # `-- sites-enabled # * Configuration files in the mods-enabled/ and sites-enabled/ directories Include sites-enabled/
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Check DocumentRoot

$ cat /etc/apache2/sites-enabled/000-default | grep DocumentRoot DocumentRoot /var/www
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Boot Menu

I move web deploy folder, /var/www/.

I make boot.ipxe to use Editor.

Please,show underline.

$ sudo cd /var/www $ sudo vi boot.ipxe #!ipxe menu install menu item ubuntu Ubuntu installation item centos7 Centos7 installation item --gap item back install menu choose --timeout 20000 --default back target && goto ${target} || goto menu :ubuntu set ubuntu http://archive.ubuntu.com/ubuntu/dists/trusty/main/installer-amd64/current/images/netboot/ubuntu-installer/amd64 initrd ${ubuntu}/initrd.gz kernel ${ubuntu}/linux tasks=standard vga=788 -- quiet boot :centos7 set centos7 http://mirror.centos.org/centos/7/os/x86_64 initrd ${centos7}/image/pxeboot/initrd.img kernel ${centos7}/image/pxeboot/vmlinuz vga=788 repo=${centos7} boot :back exit
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and Save boot.ipxe.

PXE Boot

Prepared OK!

I switch on Client PC.
First, BIOS show up.
show underline.
I want to show BBS(BIOS Boot Screen).
So,soon I press F11 Key when PC boot.

American Megatrends AMIBIOS(C) 2008 American Megatrends. Inc. G43T-M5 BIOS Release 09/28/2009 for MCJ CPU : Intel(R) Celeron(R) CPU E3300 @ 2.5GHz Press DEL to run Setup Press F11 for BBS POPUP The MCH is operation with DDR2 800 DRAM Timing: Tcl:6/Tras:18/Trcd:6/Twr:6/Trfc:52/Twtr:3/Trrd:3/Trtp:3 Single Chanel Mode 2048MB OK (64MB Shared Memory SIze Used) Auto-Detecting Pri Slave...IDE Hard Disk Auto-Detecting 3rd Master..ATAPI CDROM Pri Slave : SAMSUNG HD252HJ 1AC01118 Ultra DMA Mode-5, S.M.A.R.T. Capable and Status OK 3rd Master: HL-DT-ST DVDDAM GH24NS50 XP01 Ultra DMA Mode-5
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client show BIOS Boot Screen.

I select Realtec Boot Agent and press Enter Key.

Press select boot device: -------------------------------- SAMSUNG HD252HJ HL-DT-ST DVDRAM GH24NS50 Genetic USB SD Reader Genetic USB CF Reader Genetic USB SM Reader Genetic USB MS Reader -> Realtec Boot Agent -------------------------------- ^ and ^ to menu selection ENTER to select boot device ESC to boot using defaults
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Client change display.

Realtec RTL8111B/8111C Gigabit Boot Agent Press Shift-F10 to configure ..........
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Start PXE Boot Conlose.

Intel UNDI. PXE-2.1 (build 002) Copyright (C) 1997-2000 Intel Corporation For RealTek RTL8111B/8111C Gigabyte Ethernet Controller v2.14(000225) CLIENT MAC ADDR: 00 25 11 CB 41 1B GUID 00020003-0004-0005-0006-00700080009 CLIENT IP: 172.20.10.83 MASK 255.255.0.0 DHCP IP: 172.20.0.70 PROXY IP:172.20.0.225 GATEWAY IP: 172.20.0.254 Auto-Select: splash BOOT SERVER IP : 172.20.0.225 PXE-EB: !PXE at 9C3E:0070,entry point at 9C3E:0109 UNDI code segment 9C3E:1A7A, data segment 923D:A010 (584-632kB) UNID device is PCI 02:00.0, type DIX+802.3 584kB free base memory after PXE unload iPXE initialising devices...ok iPXE 1.0.0+ (55e4) -- Open Source Network Boot Firmware -- http://ipxe.org Features: DNS HTTP iSCSI TFTP AoE ELF MBOOT PXE bzImage Menu PXEXT Press Ctrl+B for the iPXE command line...
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Boot Menu from Web Server.

Select Ubuntu installation or CentOS7 installation and Press Enter key.

Linux Installer boot from internet resource.

 Install Menu Ubuntu installation CentOS7 installation
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References

  1. Preboot_Execution_Environment Integration Section ↩

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