2 Error in iPXE (time out and sand device)

FrancoDin

Hello, I cant figure out how to solve this, I spend a while now. The server ip is 10.0.0.72, maybe the error is because its says that the DHCP IP is .72?, I dont knwo to much about networking, if so how to change it?

Some times i get this error:
0_1540819908685_Sin nombre.png
And some times this one

george1421

My initial reaction is that you have 2 dhcp servers running that is confusing the pxe booting client.

So lets get some background data here.

What device is your dhcp server for the 10.0.x.x subnet? (that’s a pretty big subnet mask for a single subnet (!!) )
What device is 10.0.0.3 (I’m suspecting a soho/home router)
Your fog server is at 10.0.0.72?

FWIW: Each error message picture indicates a different error. But combined they give us a better picture of the problem.

FrancoDin

@george1421
Thank you for answering.
1-Its a PC whit Linux Mint 17.3 64 bits Cinammon
2- Router Mikrotik
3- Yes, that is the IP where the server is

george1421

@FrancoDin said in 2 Error in iPXE (time out and sand device):

1-Its a PC whit Linux Mint 17.3 64 bits Cinammon
2- Router Mikrotik

So do you have FOG configured as a dhcp server AND your router (mikrotik) is also configured for DHCP?

If that is the case then I can see why its not working.

FrancoDin

@george1421

I should stop the DHCP in the server? so it works?

george1421

@FrancoDin The best path to take is disable dhcp server on your FOG server.

I’m a RHEL guy so I’m guessing at these commands.

# stop the isc-dhcp server
sudo service isc-dhcp-server stop 
# Uninstall isc-dhcp server
sudo apt-get remove isc-dhcp-server

The next step is to update your router to add the boot file settings into your router. From the second error message it appears the router is selecting itself as the boot server.

What you need to do is update dhcp option 66 {next-server} on your router to point to your FOG server’s IP address and then update dhcp option 67 {boot-file} to undionly.kpxe for bios based systems or ipxe.efi for uefi based systems.

If your router doesn’t support netbooting / pxe booting then we can move on to plan B. Either plan required that you stop and uninistall the isc-dhcp server from your fog server.

FrancoDin

@george1421 I cant access to the router, so lest go whit plan B

(I will try dnsmasq in the server)

george1421

@FrancoDin Ok then for plan b.

I want you to install the DNSMASQ service on your FOG server.
sudo apt-get install dnsmasq

We will use dnsmasq to “override” what your dhcp server is telling the clients to boot from.

Once dnsmasq is installed inspect /etc/dnsmasq.d directory. There shouldn’t be any files in that directory. We need to create a new one called ltsp.conf.

Paste the following into that file

# Don't function as a DNS server:
port=0

# Log lots of extra information about DHCP transactions.
log-dhcp

# 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
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,,<fog_server_IP>
dhcp-boot=net:UEFI,ipxe.efi,,<fog_server_IP>
dhcp-boot=net:UEFI64,ipxe.efi,,<fog_server_IP>

# 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=<fog_server_ip>,proxy

Don’t forget to replace <fog_server_ip> in the above text with the IP address of your fog server. The tag appears many times.

Then issue the following commands to:

# enable dnsmasq to start every time
sudo systemctl enable dnsmasq
# restart the dnsmasq service to pick up the new config files
sudo systemctl restart dnsmasq

Make sure before you install dnsmaq you already disabled and remove isc-dhcp server from the previous post. Both services use the same network ports.

pxe boot your target computer and see if you can get to the FOG iPXE menu.

FrancoDin

@george1421

I did as you say, reinstall complety fog, and remove dhcp from the server

george1421

@FrancoDin Can you confirm that dnsmasq is running in memory.

sudo ps aux|grep dnsmasq

I’m also not seeing it pick up a dhcp address. Is the target computer on the same subnet as your dhcp server? Your Mikrotik is your normal dhcp server right?

FrancoDin

@george1421

The target computer is in the same subnet as the dhcp server, and yes the mikrotik is the normal dhcp server.

george1421

@FrancoDin well from the screen shot I don’t see dnsmasq running.

sudo systemctl start dnsmasq

then make sure it starts every reboot
sudo systemctl enable dnsmasq

Also lets capture the version of dnsmasq to make sure its 2.76 or newer
sudo dnsmasq -v

george1421

@FrancoDin I also see from the screen shot you are editing the /etc/dnsmasq.conf file. This file should not be adjusted. It should have a reference to load any files in the /etc/dnsmasq.d directory. The dnsmasq.d directory is where the ltsp.conf file goes.

Also, is your FOG server running on virtual box? If so, you need to ensure you are using a bridged network adapter for both the fog server and pxe booting client. Using a nat network adapter will cause you pains trying to get things to pxe boot.

FrancoDin

@george1421

So its fail at running, and the version of dnsmasq is 2.75
I am editing that file whit nano, because I am using Putty, and I cant coppy paste files in the ubuntu server at the moment. The fog isent runing in virtual box.

I just realized the error is in spanish, sorry my bad, that red line says:
Rank of dhcp not valid, in line 26 of lstp.conf
Fail at the start

george1421

@FrancoDin well I can see from your screen shot that you have extra text in the config file. <10.0.0.2> should be 10.0.0.2 (assuming that 10.0.0.2 is your FOG server’s IP)

PS: Look at the FOG Forum chat bubble for additional hits

FrancoDin

@george1421

Now it works, but when I go to the PC and boot:

Auto-Select:
Boot to FOG

BOOT Server ip:10.0.0.2
TFTP.
PXE-T01: File not Found
Pxe-E3B: TFTP Error - File not found
PXE-M0F: Exiting intel PXE ROm.
Fatal: Could not read from the boot medium

Also I see that maybe there is a problem in the IP, because there is another device whit the ip 10.0.0.2 so I will fix that tomorrow and tell you what happen

george1421

@FrancoDin said in 2 Error in iPXE (time out and sand device):

BOOT Server ip:10.0.0.2

fwiw: In a previous post you had the fog server at 10.0.0.27

Also the fog server must have a static IP address or one created via dhcp reservation. FOG does not fog support servers that are configured to use dhcp. Your fog deployment will break if the IP address of your fog server changes after FOG is installed.

FrancoDin

@george1421

Yhep, that broke the fog.
But I managed it, to update the dnsmasq, after manually instaling 80 packes from https://www.debian.org/distrib/packages , that seems to work for the pxe boot error, but it direct me to my previous IP, so I will reinstall ubuntu server, and try all again, because I try to reinstall fog, but have a problem deleting it and when try to reinstall its gets an error instalin packges,(maybe I broke that aswell).

george1421

@FrancoDin Well if you want to go through the process again, just make sure that the FOG server has a static IP address before you install FOG. Just install a normal FOG server without dhcp services.

Then install dnsmasq and use the config file I provided. (hint: if you are using putty to connect to your fog server, you can use copy and paste to copy the text file into nano and ltsp.conf easily).

Once dnsmasq is setup correctly using my config file it should work. If not then we will use the fog server and tcpdump to capture what is going wrong with the pxe booting process. We are far from just giving up. This WILL work.

FrancoDin

@george1421

Thank you a Lot, all working now.
Just one think, I follow this guide (https://forums.fogproject.org/topic/10944/using-fog-to-pxe-boot-into-your-favorite-installer-images/9) to add Linux Mint, to the fog menu. But when I boot from there Its says “Connection time out”, its has anything to deal whit dnsmasq?

Also, in the parameters:
kernel tftp://${fog-ip}/mint/18.1/vmlinu
Should go like this
kernel tftp://${10.0.0.7}/mint/18.1/vmlinuz
or
kernel tftp://$10.0.0.7/mint/18.1/vmlinuz
in the 3 different times its appears.

2 Error in iPXE (time out and sand device)

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