Hi,
W dniu 08.08.2020 o 04:47, Christian Nilsson pisze:
And so what actually happen when you use that append?
> Any error message or similar that is causing you issues?
Well. Almost nothing (variable is unset). But with this append when I
load wimboot (from ipxe script) - wimboot have problem to start (don't
remember exact error message but imgfree command solved this for wimboot).
From memory, any appended script will make the "autoboot" run that
script, instead of the default DHCP and before all that any embedded
script of course runs first? Have you checked the autoboot code?
Yes I did. But autoboot iterate over all interfaces - and I need only to
boot via specific one (with selected MAC address).
And what is the "hack" that you have made?
This is only for "research" purpose.
I added code that "parse" APPEND data.
For example:
APPEND ipxe:set PXEMAC AA:BB:CC:DD:EE:FF
ipxe: prefix is removed and rest is executed via system() call.
My goal is to push somehow information for ipxe about MAC address (push
from external source - ie. Foreman's template or via DHCP). I need to
"boot" ipexe via correct interface (our servers have many interfaces,
and only one is controlled by us, other are user controlled - so they
could have user controlled DHCP servers).
My two current ideas:
Push this information via (isc) DHCP bootfile,
for example for UEFI PXE Boot type:
option bootfile-name =
concat("/",binary-to-ascii (16, 8, "/",
substring (hardware, 1, 6)),"/ipxe.efi");
And this will load /AA/BB/CC/DD/EE/FF/ipxe.efi
This will require pre-generate ipxe.efi or generate them on the fly
(with embed script with correct mac address).
Second idea is to use DHCP to pass special "mark" about correct "network".
For example:
in DHCP:
option ipxe.username "X-MGT-TAG-X";
And whit this sample script I'm able to locate correct net(n) interface:
#!ipxe
echo Platform: ${platform} ${manufacturer} ${product}
imgfree
echo Looking for management network on all interfaces...
set n:int8 0
:loop
echo Checking interface net${n}
ifclose ||
ifopen net${n} || goto missing
dhcp net${n} ||
inc n || goto missing
iseq ${username} X-MGT-TAG-X || goto loop
echo Management interface found: ${netX/ifname} ${netX/mac}
goto done
:missing
echo Management interface not found!
:done
shell
I miss-use "ipxe.username" in this example.
Best regards
--
Robert Socha
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