Modifying Boot Menu

george1421

@mbarker OK so you are using FOG 1.3.0-RCx series and dnsmasq, what are you ending out for dhcp option 67? You have to remember that there are two different pxe boot kernels one for bios (legacy) and one for uefi. You need to ensure you send the right file to the target computer.

Your error almost sounds like you are either sending an old syslinux kernel or an old iPXE kernel to the target computer. You should NOT be sending pxelinux.0 to the target computer. Use undionly.kpxe or ipxe.efi

george1421

@mbarker said in Modifying Boot Menu:

…this is an x64 system, but I can’t find in the menu setups where to change to init32.xz (if I remember the documentation correctly, that should be used on x64 systems)

Just for clarity the iPXE menu determines what kernel to send to the target computer. You can force a specific kernel if you manually register the host, but in general the iPXE kernel will decide what the target needs and send the right FOS Engine kernel/vhd pair to the target.

mbarker

@george1421

From my dnsmasq.conf:

tried with:
dhcp-boot=undionly.kpxe

and
dhcp-boot=undionly.kpxe.0

I have a symbolic link created:
undionly.kpxe.0 -> undionly.kpxe

Here’s the last few lines from /var/log/messages:
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 Available DHCP subnet: 10.84.52.180/255.255.255.0
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 Vendor class: PXEClient:Arch:00000:UNDI:002001
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 User class: iPXE
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 PXE(eth0) 00:21:cc:c5:5b:d9 proxy
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 tags: eth0
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 bootfile name: undionly.kpxe.0
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 sent size: 1 option: 53:message-type 02
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 sent size: 4 option: 54:server-identifier 10.84.52.180
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 sent size: 9 option: 60:vendor-class 50:58:45:43:6c:69:65:6e:74
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 sent size: 17 option: 97:client-machine-id 00:81:16:f9:e9:e4:51:cb:11:a4:a860…
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 sent size: 82 option: 43:vendor-encap 06:01:02:09:30:80:00:11:42:6f:6f:74:20…
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 Available DHCP subnet: 10.84.52.180/255.255.255.0
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 Vendor class: PXEClient:Arch:00000:UNDI:002001
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 User class: iPXE
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 PXE(eth0) 00:21:cc:c5:5b:d9 proxy
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 tags: eth0
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 bootfile name: undionly.kpxe.0
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 sent size: 1 option: 53:message-type 05
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 sent size: 4 option: 54:server-identifier 10.84.52.180
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 sent size: 9 option: 60:vendor-class 50:58:45:43:6c:69:65:6e:74
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 sent size: 17 option: 97:client-machine-id 00:81:16:f9:e9:e4:51:cb:11:a4:a860…
Sep 15 12:06:29 fog13 dnsmasq-dhcp[13087]: 2366039648 sent size: 82 option: 43:vendor-encap 06:01:02:09:30:80:00:11:42:6f:6f:74:20…
Sep 15 12:06:37 fog13 in.tftpd[13306]: Client 10.84.52.191 finished default.ipxe

Not sure if default.ipxe should be the right file for it to get…I dunno I might go back to figuring out how to get my system to load WinPE and use the software they already have licensed and have used before, this is getting a little discouraging lol

george1421

@mbarker Well I can say you jumped right into a complex issue where you don’t have access to the dhcp server and are trying proxy dhcp.

Just browsing through the dnsmasq log everything looks great. Default ipxe should be the product. The results should be the fog iPXE menu from this. The undionly.kpxe is the iPXE kernel that gets loaded onto the target computer. What you should see from there should be the fog ipxe menu.

george1421

@george1421 said in Modifying Boot Menu:

Now when you select a iPXE menu item it then “should” transfer the bzImage (kernel) and init.zx (the virtual hard drive) to the target computer. That error message you posted is the kernel not understanding the format of the virtual hard drive.

You have to understand that imaging with FOG is a complex dance between 4 different technologies and you went to hard mode right away. This does work we just need to identify what happened.

edit: The bzImage and init.zx are the 64 bit images and bzImage32 and init32.xz are the 32 bit images they are a match pair. If somehow these pairings got messed up it would create the error you posted too.

mbarker

@george1421
Oh don’t I know it -_- The trouble is the client wanted to spend as LITTLE money as possible on this (saves about $250-300 a month in courier costs…), and since they felt this was more important than me upgrading their Active Directory to something…I dunno…supported…I’m stuck dealing with hopping into a hard situation (cause…it can never be easy, where would the fun be if it was all easy? :P)

I tried with both the 32 bit and the 64 bit version of bzImage/init.zx and the same error still comes up. I wasn’t getting it on the previous version of fog, then again I think I was sending it pxelinux.0 as the boot kernel. I’m just not sure where to go with this one (I’ve done plenty of PXE boot situations…back in the popular Norton Ghost days lol

edit: I do have access to the DHCP server, I just can’t use it because of the way the last IT guy setup the network

george1421

@mbarker said in Modifying Boot Menu:

I tried with both the 32 bit and the 64 bit version of bzImage/init.zx and the same error still comes up.

This concerns and confuses me a bit. You should not have to mess with these files. I’m going to recommend that you go back to the 1.3.0 files that you downloaded and rerun the bin/installfog.sh install script again to resync everything.

Also please post your config file from dnsmasq, again the only time I’ve see this get messed up is when the kernel doesn’t match the vhd file or pxelinux.0 or an old version of iPXE is being used.

And your symbolic links are to the current ipxe files of undionly.kpxe and ipxe.efi? The dnsmasq program always tags a .0 (dot zero) on the end.

mbarker

I didn’t actually do much on the Fog 1.3.0 side of things other than hide a few menu items…so the config there shouldn’t be anything there that would have gotten out of sync…

Here’s my dnsmasq config:

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

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

# Dnsmasq can also function as a TFTP server. You may uninstall
# tftpd-hpa if you like, and uncomment the next line:
# enable-tftp

# Set the root directory for files available via FTP.
tftp-root=/tftpboot
# The boot filename.
#dhcp-boot=undionly.kpxe.0
dhcp-boot=pxelinux.0


# rootpath option, for NFS
dhcp-option=17,/images

# kill multicast
dhcp-option=vendor:PXEClient,6,2b

# 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

# PXE menu.  The first part is the text displayed to the user.  The second is the timeout, in seconds.
pxe-prompt="Press F8 for boot menu", 0

# 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 from network", pxelinux

# A boot service type of 0 is special, and will abort the
# net boot procedure and continue booting from local media.
pxe-service=X86PC, "Boot from local hard disk", 0

dhcp-range=10.84.52.180,proxy

There’s not much in it just what is needed to be honest. I’m really at a loss here, the bzImage and init.xz from fog 1.2 worked perfectly fine, it’s only on 1.3 RC10 that I ran into this problem…

george1421

@mbarker dude, I said not to use pxelinux.0

Is this what you created the sym links to?

I have some paperwork (sorry real job) to take care of but I’ll be back soon to dig a bit deeper.

george1421

I wrote a tutorial a while ago about my experience with dnsmasq. I did not follow the one from the official fog wiki page but arrived at a working solution. In my case I did this with my home kit using my home firewall as the dhcp server and the fog server running dnsmasq. https://forums.fogproject.org/topic/6376/install-dnsmasq-on-centos-7
The efi section of my dnsmasq config file will only work if you are running the lastest dnsmasq.

Since then the dnsmasq group (not FOG) made upgrades to dnsmasq so that dnsmasq will deliver the proper boot file (undionly/ipxe.efi) depending on the computer asking for dhcp proxy info. This version of dnsmasq hasn’t made it into the linux distribution chains just yet. But right now you need to walk before you run.

mbarker

LOL oops that was after I saved it to try something…the symlink is to:

lrwxrwxrwx   1 root root     13 Sep 15 11:31 undionly.kpxe.0 -> undionly.kpxe

from dnsmasq conf (proper):

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

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

# Dnsmasq can also function as a TFTP server. You may uninstall
# tftpd-hpa if you like, and uncomment the next line:
# enable-tftp

# Set the root directory for files available via FTP.
tftp-root=/tftpboot
# The boot filename.
dhcp-boot=undionly.kpxe.0


# rootpath option, for NFS
dhcp-option=17,/images

# kill multicast
dhcp-option=vendor:PXEClient,6,2b

# 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

# PXE menu.  The first part is the text displayed to the user.  The second is the timeout, in seconds.
pxe-prompt="Press F8 for boot menu", 0

# 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 from network", pxelinux

# A boot service type of 0 is special, and will abort the
# net boot procedure and continue booting from local media.
pxe-service=X86PC, "Boot from local hard disk", 0

dhcp-range=10.84.52.180,proxy

Sorry I saved the pxelinux line to test something out…and it failed, I wonder if it’s these particular versions of the init and bzimage files? perhaps it doesn’t jive with an older system - I’m gonna try another machine hang on

edit: I get the real job stuff too, I’m stick handling this and trying to sort out some Microsoft Licensing at the same time as I’m trying to fix a Wordpress install LOL

george1421

@mbarker Yeah, I would review my config file when you have a chance, but this line jumped out at me right way.

dhcp-boot=undionly.kpxe,,<fog_server_IP>

The fog server IP address should appear twice in your config file, you missed this one.

mbarker

I was literally just adding that into my config right now hold tight (it probably will solve the TFTP server IP prompt too :))

mbarker

@george1421

Still Kernel panic but no more prompt for a TFTP Server IP so one thing fixed lol

When the system loads past the menu I get
bzImage…ok
init.xz…ok

and then this is where the Kernel Panic happens…it just makes no sense to me

I have my dnsmasq almost identical to your .conf file (I’m on CentOS 6.8…)

Think I should try copying the known working bzimage and xint.xz files and see if that helps?

george1421

@mbarker Ok the next step is to ensure that we have the proper boot kernels.

https://fogproject.org/inits/init.xz
https://fogproject.org/inits/init_32.xz
https://fogproject.org/kernels/bzImage
https://fogproject.org/kernels/bzImage32

These links will download the latest (current) kernel and inits. They go in /var/www/html/fog/service/ipxe

Also when ipxe loads there is a version number and a hex number in parentheses, what is that hex number.

Just for clarity what device are you trying to pxe boot into fog? Is it configured for uefi or bios (legacy) mode?

I feel you have the dnsmasq part setup right now so we can rule that out as long as you have your links correct as I have defined them in the tutorial.

mbarker

@george1421
Hey I didn’t run away, just had a conference call to do…the device is a Lenovo T420 laptop with an Intel Series Ethernet Controller (I can’t recall the exact info on it).

When i re-loaded the images that you linked now I’m getting a kernel panic before the menu loads…same panic, earlier in the boot sequence.

Since I didn’t change anything for the “mode” I’m assuming it’s Legacy mode…

The TFTP service serves out the boot.php file but then it hangs, tries to get init.xz and bzImage, then throws a Kernel Panic at me -_-

Tom Elliott

@mbarker where is it loading the init from?

Where is it loading the kernel from? Is something passing pxelimux instead of the ipxe files?

mbarker

@Tom-Elliott
It’s loading them from /var/www/html/fog/service/ipxe/

Now what’s weird is unregistered hosts get to the menu OK but a registered host doesn’t …however still have the same Kernel Panic I did before…so frustrating lol

edit: figured this out by renaming init.xz, now when I try to get to anything from the menu it fails chainloading that file instead of the Kernel Panic (init.xz IS in my /tftpboot/ folder, but isn’t referenced in any config files to boot from there

Tom Elliott

That’s the issue.

The init’s and kernels should NOT be loading from tftpboot at all.

george1421

@mbarker Even before Tom posted, my intuition is telling me your FOG install is botched/been tweaked a little too much. I can’t explain why I feel this, but I can’t escape the thought you shouldn’t be having this level of difficulty getting this to work.

My recommendation would be to rename /var/www/html/fog to fog.old and /tftpboot to /tftpboot.old and then go back to the files you downloaded for FOG in the /bin directory and rerun the fog installer. That will put everything back to a known configuration. Once the installer is done then create the two links as I mentioned in my tutorial. Then reboot your fog server. Dnsmasq will still be setup so that part (that works) should be OK.

Modifying Boot Menu

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