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    UEFI PXE Boot - Pain

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    • R
      RogerBrownTDL @george1421
      last edited by

      @george1421 @brakcounty

      So the DHCP server runs off our Watchguard and is a separate network (we have one for our production lan and one for our build lab)

      I can change the Watchguard interface from a DHCP server to a relay server but that would mean it wouldnt hand out DHCP leases right?

      george1421G 2 Replies Last reply Reply Quote 0
      • george1421G
        george1421 Moderator @RogerBrownTDL
        last edited by

        @rogerbrowntdl With this setup the dnsmasq server only provides pxe boot information using the proxydhcp protocol. It does not manage ip address with this configuration. Its intended to augment your existing dhcp server.

        Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

        R 2 Replies Last reply Reply Quote 0
        • george1421G
          george1421 Moderator @RogerBrownTDL
          last edited by

          @rogerbrowntdl We would typically use this if your dhcp server is managed by an outside party, or your dhcp server settings can’t be changed or your dhcp server does not support dynamic pxe booting (pfsense router does by the way so dnsmasq on the fog server isn’t needed here).

          Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

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          • R
            RogerBrownTDL @george1421
            last edited by

            This post is deleted!
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            • R
              RogerBrownTDL @george1421
              last edited by

              @george1421 So in effect, I just leave the Watchguard as a DHCP server, set option 66 and 150 to point to my FOG box, remove option 67 and then install DNSMasq? Or do I remove ALL options from my Watchguard and install DNSMasq?

              Forgive my lack of knowledge on the subject lol. How does the PXE request then get to the FOG server? Does the client, send a DHCP request to the Watchguard and then a broadcast for PXE or do I need to leave something in the Watchguard to tell the client to go to FOG?

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              • D
                DBCountMan @RogerBrownTDL
                last edited by DBCountMan

                @rogerbrowntdl dnsmasq runs on the FOG server to detect architecture and boot type then serve the boot files over tftp. This is my understanding of how it all works:
                PC sends DHCP server a request for an IP address with a pxe packet.
                DHCP assigns an IP address then directs (relays) the PC to the FOG server.
                FOG Server handles this request by sending either undionly.kpxe or ipxe.efi depending on the architecture of the PC (dnsmasq tftp service).
                PC downloads and executes the correct file.
                After that FOG loads the boot menus.

                R 1 Reply Last reply Reply Quote 1
                • R
                  RogerBrownTDL @DBCountMan
                  last edited by

                  @brakcounty Thats my question really, do I need to leave a setting in (66 67 or 150) to tell the Watchguard to send the PXE request to FOG? I presume I need to put a setting in somewhere or the client wont know where to go for it’s PXE boot

                  george1421G 2 Replies Last reply Reply Quote 0
                  • george1421G
                    george1421 Moderator @RogerBrownTDL
                    last edited by

                    @rogerbrowntdl said in UEFI PXE Boot - Pain:

                    do I need to leave a setting in (66 67 or 150)

                    For clarity I would remove them from watchguard dhcp. Actually dhcp option 150 is not a thing at least for pxe booting. From a functional standpoint proxydhcp will override the values provided in the dhcp packet. The advantage of running dnsmasq on the FOG server is that when the fog server is not running, no pxe boot information will be handed out. All clients will boot normally, but this is also the issue with leaving unmanaged settings in dhcp where sometime down the road if the fog server isn’t running things might behave a bit unexpected if the old dhcp settings are found by the client computers.

                    Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                    1 Reply Last reply Reply Quote 0
                    • george1421G
                      george1421 Moderator @RogerBrownTDL
                      last edited by

                      @rogerbrowntdl said in UEFI PXE Boot - Pain:

                      I presume I need to put a setting in somewhere or the client wont know where to go for it’s PXE boot

                      With the proxy dhcp response that tells the target computer once you have an ip address speak to this server (the fog server’s dnsmasq) to get the pxe boot information. Other than setting up dnsmasq there is nothing else that needs to be touched (as long as the fog server and pxe booting clients are on the same subnet)

                      Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

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                      • R
                        RogerBrownTDL @DBCountMan
                        last edited by

                        @brakcounty You mention you had to disable tftpd.service and yet your line in that code says “enable-tftp” Are they different things? (Yes I’m a noob to all this but up until recently FOG was a mint replacement to the shitty MDT box we had - Just damn manufacturers now stopping legacy option in bios means i’m forced to change this to UEFI)

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                        • D
                          DBCountMan @RogerBrownTDL
                          last edited by

                          @rogerbrowntdl Yes they are two different services. tftpd is what FOG uses by default. The TFTP protocol listens on TCP port 69, so two services cannot listen on the same port at the same time.

                          R 1 Reply Last reply Reply Quote 0
                          • R
                            RogerBrownTDL @DBCountMan
                            last edited by

                            @brakcounty Okay makes sense… dnsmasq was already installed and configured… Weird that it wouldnt boot before (hence we had to go the legacy option I believe) however now when I try and start dnsmasq it tells me to piss off because 69 is already in use?

                            "[1]: Starting dnsmasq - A lightweight DHCP and caching DNS server…
                            [624]: dnsmasq: syntax check OK.
                            [678]: dnsmasq: failed to create listening socket for port 69: Address already >
                            [678]: failed to create listening socket for port 69: Address already in use
                            [678]: FAILED to start up
                            [1]: dnsmasq.service: Control process exited, code=exited, status=2/INVALIDARGU>
                            [1]: dnsmasq.service: Failed with result ‘exit-code’.
                            [1]: Failed to start dnsmasq - A lightweight DHCP and caching DNS server.

                            george1421G D 2 Replies Last reply Reply Quote 0
                            • george1421G
                              george1421 Moderator @RogerBrownTDL
                              last edited by george1421

                              @rogerbrowntdl said in UEFI PXE Boot - Pain:

                              [678]: dnsmasq: failed to create listening socket for port 69: Address already >

                              This kind of indicates you did not follow the config file exactly. Since dnsmasq should not attempt to use tftp port with this configuraiton. Please post your complete ltsp.conf file here for review.

                              Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                              R 1 Reply Last reply Reply Quote 0
                              • D
                                DBCountMan @RogerBrownTDL
                                last edited by DBCountMan

                                @rogerbrowntdl Ok so it seems that tftpd might still be running.
                                First stop and disable the tftpd service

                                sudo systemctl stop tftpd.service && sudo systemctl disable tftpd.service
                                

                                Make sure dnsmasq isn’t running

                                sudo systemctl stop dnsmasq.service
                                

                                Edit/Create a file called ltsp.conf in the /etc/dnsmasq.d directory

                                sudo nano /etc/dnsmasq.d/ltsp.conf
                                

                                Paste the following code and replace <fog_server_IP> with your FOG server’s IP address

                                # Don't function as a DNS server:
                                port=0
                                
                                # Log lots of extra information about DHCP transactions.
                                log-dhcp
                                
                                # Enable TFTP
                                enable-tftp
                                
                                # Set the root directory for files available via FTP.
                                tftp-root=/tftpboot
                                
                                # The boot filename, Server name, Server Ip Address
                                dhcp-boot=undionly.kpxe,,<fog_server_IP>
                                
                                # Disable re-use of the DHCP servername and filename fields as extra
                                # option space. That's to avoid confusing some old or broken DHCP clients.
                                dhcp-no-override
                                
                                # inspect the vendor class string and match the text to set the tag
                                dhcp-vendorclass=BIOS,PXEClient:Arch:00000
                                

                                Then start dnsmasq

                                sudo systemctl start dnsmasq.service
                                

                                Let me know how that works out for you.

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                                • R
                                  RogerBrownTDL @george1421
                                  last edited by george1421

                                  @george1421 My ltsp file:

                                  # Don't function as a DNS server:
                                  port=0
                                  
                                  # Log lots of extra information about DHCP transactions.
                                  log-dhcp
                                  
                                  # Enable TFTP 
                                  enable-tftp <<<<<<I added this bit as per @brakcounty suggested from his config
                                  
                                  # Set the root directory for files available via FTP.
                                  tftp-root=/tftpboot
                                  
                                  # The boot filename, Server name, Server Ip Address
                                  dhcp-boot=undionly.kpxe,,192.168.15.251
                                  
                                  # Disable re-use of the DHCP servername and filename fields as extra
                                  # option space. That's to avoid confusing some old or broken DHCP clients.
                                  dhcp-no-override
                                  
                                  # inspect the vendor class string and match the text to set the tag
                                  dhcp-vendorclass=BIOS,PXEClient:Arch:00000
                                  dhcp-vendorclass=UEFI32,PXEClient:Arch:00006
                                  dhcp-vendorclass=UEFI,PXEClient:Arch:00007
                                  dhcp-vendorclass=UEFI64,PXEClient:Arch:00009
                                  
                                  # Set the boot file name based on the matching tag from the vendor class (above)
                                  dhcp-boot=net:UEFI32,i386-efi/ipxe.efi,,192.168.15.251
                                  dhcp-boot=net:UEFI,ipxe.efi,,192.168.15.251
                                  dhcp-boot=net:UEFI64,ipxe.efi,,192.168.15.251
                                  
                                  # PXE menu.  The first part is the text displayed to the user.  The second is the timeout, in seconds.
                                  pxe-prompt="Booting FOG Client", 1
                                  
                                  # The known types are x86PC, PC98, IA64_EFI, Alpha, Arc_x86,
                                  # Intel_Lean_Client, IA32_EFI, BC_EFI, Xscale_EFI and X86-64_EFI
                                  # This option is first and will be the default if there is no input from the user.
                                  pxe-service=X86PC, "Boot to FOG", undionly.kpxe
                                  pxe-service=X86-64_EFI, "Boot to FOG UEFI", ipxe.efi
                                  pxe-service=BC_EFI, "Boot to FOG UEFI PXE-BC", ipxe.efi
                                  
                                  dhcp-range=192.168.15.251,proxy
                                  
                                  george1421G 1 Reply Last reply Reply Quote 0
                                  • george1421G
                                    george1421 Moderator @RogerBrownTDL
                                    last edited by george1421

                                    @rogerbrowntdl said in UEFI PXE Boot - Pain:

                                     # Enable TFTP 
                                    enable-tftp <<<<<<I added this bit as per @brakcounty suggested from his config
                                    

                                    Yeah, lets go and take that out of your config file. FOG installs a tftp service where this setting will conflict. Go ahead and restart dnsmasq after that.

                                    Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                                    D R 2 Replies Last reply Reply Quote 0
                                    • D
                                      DBCountMan @george1421
                                      last edited by

                                      @george1421 I had to disable tftpd and add that line to get it to serve ipxe.efi properly.

                                      george1421G 1 Reply Last reply Reply Quote 0
                                      • george1421G
                                        george1421 Moderator @DBCountMan
                                        last edited by

                                        @brakcounty said in UEFI PXE Boot - Pain:

                                        I had to disable tftpd and add that line to get it to serve ipxe.efi properly.

                                        You shouldn’t need to. The built in tftp server does everything you need. There is one additional ltsp.conf setting that is used in rare instances that might have worked over using dnsmasq’s tftp server.

                                        Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                                        1 Reply Last reply Reply Quote 0
                                        • R
                                          RogerBrownTDL @george1421
                                          last edited by

                                          @george1421 bingo it’s started fine now

                                          D george1421G 2 Replies Last reply Reply Quote 1
                                          • D
                                            DBCountMan @RogerBrownTDL
                                            last edited by

                                            @rogerbrowntdl Welp, sorry for misdirecting you!

                                            R 1 Reply Last reply Reply Quote 0
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