.. Download Pxe Boot Server Software- Ccboot Server Installation Package
Hello World,
This post is a continuation of our previous post about setting upward a PXE Server that tin exist used to deploy BIOS or UEFI Based systems. Our PXE Server setup has been using the pxelinux files for the bios client and the grub software to boot UEFI client. As mentioned in the previous post, this configuration seems the best option nowadays because the pxelinux files are not signed for secure boot in UEFI and thus take a limited interest in production environment.
However, some people have been requesting and asking if it would be possible to use only PXELINUX files to back up BIOS and UEFI based systems. This mail will investigate this option and provide a quick step by step instructions. So, let's see if this is a viable solution….
Overview
Assumptions
To be able to use this guide, you lot will need to first follow the instructions in our previous post equally it explains how to setup the full TFTP/PXE infrastructure. Nosotros will non repeat here all the steps already provided. The following assumptions have been made as well
- Hyper-v platform is used to emulatedUEFI based virtual machines
- VM Generation ii will be used in order to accept UEFI and SecureBoot choice is Disabled (because pxelinux uefi are not supported when secure boot is enabled)
- You lot haveinternet connection in order to download additional necessary packages
- You lot take followed the instructions from our previous mail to install DHCP/PXE/TFTP and create the tftp binder structure
Step past Pace Guide
Step 1 – Download UEFI PXELINUX Files
And so, the first step is to obtain the necessary pxelinux files. The version of pxelinux that yous volition be using is really important.Nosotros accept tried the latest version of the package but this i didn't worked at all. We had an error message about packet size issue. Then, we had to downgrade and select another bundle. We accept download the previous version (i.e. vi.03-pre9). And so, in your Ubuntu server, in your panel, execute the following commands
cd ~ wget https://mirrors.edge.kernel.org/pub/linux/utils/boot/syslinux/Testing/6.03/syslinux-6.03-pre9.tar.fifteen
Subsequently downloading information technology, we can extract the content of the compressed file by executing the post-obit command
tar -xf ~/syslinux-six.03-pre9.tar.xv
Stride 2 – copy the pxelinux uefi files to the correct location
It's time to re-create the files to the correct location. Before doing this, we will create a new subfolder under our /tftp root binder. Nosotros will create the /tftp/uefi folder that would be used to host the pxelinux UEFI files needed. So, as a first step, we will execute the following command
sudo mkdir /tftp/kick/uefi
Now, nosotros tin can copy the necessary pxelinux files into the proper location.
sudo cp ~/syslinux-6.03-pre9/efi64/com32/elflink/ldlinux/ldlinux.e64 /tftp/uefi sudo cp ~/syslinux-vi.03-pre9/efi64/com32/libutil/libutil.c32 /tftp/uefi sudo cp ~/syslinux-six.03-pre9/efi64/com32/menu/card.c32 /tftp/uefi sudo cp ~/syslinux-6.03-pre9/efi64/com32/bill of fare/vesamenu.c32 /tftp/uefi sudo cp ~/syslinux-vi.03-pre9/efi64/efi/syslinux.efi /tftp/uefi
Footstep iii – create the pxelinux boot carte
Hither again, nothing new. we need to create the proper folder structure so the pxe kicking loader knows where to get the necessary files. We volition starting time create an additional subfolder nether /tftp/ueficalled pxelinux.cfg.Then, execute the following command
sudo mkdir /tftp/uefi/pxelinux.cfg
Nosotros tin can at present copy the file for the boot carte from the bios folder. We will upshot the post-obit command
sudo cp /tftp/bios/pxelinux.cfg/default /tftp/uefi/pxelinux.cfg
Step iv – Create symbolic link to boot folder
We are almost done with the folder construction preparations. We now need to create a symbolic link to the /tftp/kicking folder so the pxelinux boot loader knows where to find the necessary files to kicking from. To create this symbolic link, you lot will just execute the post-obit command
sudo ln -s /tftp/boot /tftp/uefi/boot
Step 5 – Update the dnsmasq.conf file
The pxe client needs to know where to notice the file it will boot from. In our previous post, nosotros take been using the grub software file and we accept made a reference of it in the /etc/dnsmasq.conf.So, because we want to utilize the syslinux.efi instead of the bootx64.efi file, nosotros will comment the last line of the file and we take added the following line
dhcp-boot=tag:efi-x86_64,uefi/syslinux.efi
#Interface data #--employ ip addr to come across the name of the interface on your system interface=eth0,lo bind-interfaces domain=c-nergy.local #-------------------------- #DHCP Settings #-------------------------- #-- Fix dhcp scope dhcp-range=192.168.one.160,192.168.1.200,255.255.255.0,2h #-- Prepare gateway option dhcp-option=3,192.168.1.i #-- Set DNS server option dhcp-option=six,192.168.1.1 #-- dns Forwarder info server=8.eight.8.8 #----------------------# # Specify TFTP Options # #----------------------# #--location of the pxeboot file dhcp-boot=/bios/pxelinux.0,pxeserver,192.168.1.150 #--enable tftp service enable-tftp #-- Root folder for tftp tftp-root=/tftp #--Observe compages and send the right bootloader file dhcp-lucifer=gear up:efi-x86_64,choice:customer-arch,7 #dhcp-kicking=tag:efi-x86_64, grub/bootx64.efi dhcp-boot=tag:efi-x86_64,uefi/syslinux.efi
To accept the change applied to your system, yous will need to restart the dnsmasq service. To perform such job, yous volition execute the following command
sudo systemctl restart dnsmasq
And then, you should bank check that the dnsmasq is started correctly and that no errors are reported by issuing the command
sudo systemctl status dnsmasq
Stride vi – Try to boot your PXE client
Before trying your pxe uefi boot solution, you will need to ensure that you lot have disabled the secure kicking option in your virtual machine (run into screenshot below). If you have enabled the secure kick, the pxe boot process will fail immediately (when using uefi pxelinux files !!!!)
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If your virtual car is configured correctly, you should run into the pxelinux bill of fare (with some noise in the groundwork) and you should be able to boot from network.
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Important ! The operation are really bad with these files. The BIOS version will boot in a few seconds. The UEFI process might take several minutes before you see the server wizard installer or the Ubuntu desktop live file system and perform your installation
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Concluding Notes
This is it for this post ! Later a lot of trial an mistake, we succeeded in implementing a pxe server using only pxelinux technology. Even so, because of the limitations and operation issues nosotros have encountered with the uefi version of pxelinux file, this pxelinux solution simply will probably never exist used in a production infrastructure. The uefi pxelinux does not back up uefi machines with secure boot enabled and the download process of the 40 MB initial boot files accept multiple minutes. For us, it'due south a no go !
To consummate this serie about pxe server and linux, nosotros might want to investigate the option to have a pxe server using only grub files….. nosotros will see if nosotros take time to do that… simply at the moment we are really decorated working on other topics, so nosotros will run across
Till next time
Encounter ya
.. Download Pxe Boot Server Software- Ccboot Server Installation Package
DOWNLOAD HERE
Source: https://c-nergy.be/blog/?p=13808
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