DNSMasq Help for iPXE stuff
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i don’t have any experience with DNSMasq but i’ll help with what i can. when you tried chainloading from pxelinux.0, what ipxe file did you direct it to. ipxe.krn or undionly.kpxe?
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I’ve tried both. I’ve been focusing on undionly.kpxe, should I not be?
After supplying either one I just sit at “boot:”
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well, i know that i’ve had chainloading working from pxelinux.0 with the ipxe.krn one with the following in the pxelinux.cfg/default file
[CODE]DEFAULT vesamenu.c32
LABEL fog
MENU DEFAULT
kernel ipxe.krn dhcp && chain http://(fog-server-ip-address)/fog/service/ipxe/boot.php?mac=${net0/mac}
PROMPT 0
TIMEOUT 01
[/CODE] -
THANK YOU FOR THE HELP!!! THAT DID IT!!! It had to be the ipxe.krn in the default file that was where I kept getting stuck! I kept using the undionly.kpxe
So for reference this is how I set it up.
Installed DNSMasq and used the settings recommended in the wiki. I edited some of the information, but I left it to boot pxelinux.0. I added the line dhcp-authoritative to the bottom of the ltsp.conf and saved the file. I will post my set up at the end of my write up.
I then renamed the pxelinux.0.old in the /tftpboot folder to pxelinux.0
[code]
sudo mv /tftpboot/pxelinux.0.old /tftpboot/pxelinux.0
[/code]Now I created a /pxelinux.cfg/default.
[code]
cd tftpboot
sudo mkdir /pxelinux.cfg
cd pxelinux.cfg
sudo gedit default
[/code]I used Junkhackers recommendation on the default file information substituting my ip address for the fog server:
[code]
DEFAULT vesamenu.c32
LABEL fog
MENU DEFAULT
kernel ipxe.krn dhcp && chain http://(fog-server-ip-address)/fog/service/ipxe/boot.php?mac=${net0/mac}
PROMPT 0
TIMEOUT 01
[/code]Then test!
as promised my ltsp.conf
[code]
port=0
log-dhcp
tftp-root=/tftpbootdhcp-boot=/tftpboot/pxelinux.0
dhcp-option=17,/images
dhcp-option=vendor:PXEClient,6,2b
dhcp-no-override
pxe-prompt=“Press F8 for boot menu”, 0
pxe-service=X86PC, “Boot from network”, pxelinux
dhcp-range=10.6.10.1,proxy
dhcp-authoritative[/code]
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the undionly.kpxe is made to automatically look for the file default.ipxe in the same directory as itself. for some reason i don’t think it could find it, and that’s why it wasn’t working for you.
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This post is deleted! -
Tom has informed me that the undionly.kpxe file IS the pxelinux.0 file. So with that being said, we don’t have to rename the pxelinux file and we can use undionly.kpxe in place. I will test and verify/update wiki when I have confirmed this.
Thanks for that Tom, I have adjusted my statement as not to confuse anyone.
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I think the phrasing is backwards, but same kind of thing.
The undionly.kpxe file IS, for all intents and purposes, the pxelinux.0 file.
So change your Option 67 line to point to undionly.kpxe rather than pxelinux.0.
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[S]Not that I doubted you, but I gave this a go with the undionly.kpxe in place of pxelinux.0 and it went off without a hitch![/S]
[S]Thanks for your insight Tom![/S]
See next post
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bad news everyone… what I thought was working, is not.
It turns out the pxelinux.0 file was still hanging around and that has been what I have been chainloading and booting from, not the undionly.kpxe.
Because I use ip-helpers I am not sure if they are causing an issue or not.
So I still need help in adjusting the settings, ideas on things to tweak in order to get my network booting the correct pxe file.
I have removed the pxelinux.0 file and now regardless of what I supply in the dnsmasq ltsp.conf file I always receive the PXE-T01 error file not found.
any attempts to collect the file with a tftp get command will complete successfully.
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there has been partial success.
I found that, for whatever reason, when we use the call line
[code]
pxe-service=X86PC, “Boot from network”, undionly.kpxe
[/code]the tftpboot server is actually looking for /tftpboot/unionly.kpxe.0
It is adding a .0 to the end of the file by default. That is fine, I can work with that.
When I make adjustments for the new file (unidonly.0) I can boot the ipxe system yay ipxe boots, but I never get my pxe menu loaded. It stops short after finding the mac information, see attatched screenshot.
I have even tried to slim down the default.ipxe to only include enough information to boot (no paramaters and what not) and it STILL fails after the mac.
Does anyone have a stronger grasp of what is going on?
[url=“/_imported_xf_attachments/0/656_error.jpg?:”]error.jpg[/url]
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i found a tutorial for ipxe with DNSMasq [url]http://www.heath-bar.com/blog/?p=326[/url]
looks like it could give you some ideas on what’s wrong -
Thanks junhacker, that helped a bit more. Tom and I hit our heads together for a few days but we finally figured it out, what we have now is a REAL working use of dnsmasq with the undionly.kpxe boot file and using the boot.php as Tom has intended. This is very basic and gets the pxe boot menu working. BUT the important thing is it uses the real files and not faking it like before.
This thing is very temperamental, so as you add options it may break!
Here is a working set up
[code]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, Server name, Server Ip Address
dhcp-boot=undionly.kpxe,x.x.x.x
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”, 3
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
If an integer boot service type, rather than a basename is given, then the
PXE client will search for a suitable boot service for that type on the
network. This search may be done by multicast or broadcast, or direct to a
server if its IP address is provided.
pxe-service=x86PC, “Install windows from RIS server”, 1
This range(s) is for the public interface, where dnsmasq functions
as a proxy DHCP server providing boot information but no IP leases.
Any ip in the subnet will do, so you may just put your server NIC ip here.
Since dnsmasq is not providing true DHCP services, you do not want it
handing out IP addresses. Just put your servers IP address for the interface
that is connected to the network on which the FOG clients exist.
If this setting is incorrect, the dnsmasq may not start, rendering
your proxyDHCP ineffective.
dhcp-range=10.0.0.10,proxy
This range(s) is for the private network on 2-NIC servers,
where dnsmasq functions as a normal DHCP server, providing IP leases.
dhcp-range=192.168.0.20,192.168.0.250,8h
For static client IPs, and only for the private subnets,
you may put entries like this:
dhcp-host=00:20:e0:3b:13:af,10.160.31.111,client111,infinite
[/code]
This boots straight to the pxe menu, if you want to add boot options, you figure it out
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in order to use the boot commands, you need to symlink undionly.kpxe to undionly.0 because of the appending .0 but then you can issue commands as normal, it seems after we got the dhcp-boot line correct the commands work again.
symlink undionly
[code]
cd /tftpboot
sudo ln -s undionly.kpxe undionly.0
[/code]enable the boot lines
[code]
pxe-prompt=“Press F8 for boot menu”, 3The 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”, undionly
[/code]
