I've been using pxelinux with good success to netboot knoppix systems.
This is link has been the base for my work so far:
http://www.babytux.org/articles/howto/how2netknoppix.php
I keep all of the netbootable systems in /tftpboot/systems/knoppix-#.##,
where knoppix-#.## is the filesystem extracted from the knoppix cd. I
use a variation on the knoppix-terminalserver script to generate a
miniroot.gz (initrd) image for each major knoppix revision.
pxelinux is then configured to point to the kernel and initrd and to the
nfs share location for the system's root.
the initrd image's linuxrc takes care of loading a suitable network and
nfs module, running pump to get an ip address and then mounting the
remote root.
It is possible to customize the systems by running: cp -a
system/knoppix-#.## system/purpose ; chroot system/purpose but knoppix
is a bit of beast which makes it heavy/complex to use as a base system.
I really want to be able to build arbitrary linux systems and then
capture them with something like:
tar cvpf - ./ --exclude=./purpose-#.##.gz --exclude=./proc | gzip -c >
./purpose-#.##.tar.gz
and roll a custom initrd image to bootstrap them, and then make the
systems available to be netbooted.
I'm having a lot of trouble rolling a custom initrd though :). I've
started with trying to netboot a simple ubuntu server system. I'm
generating the initrd for it on my laptop, which runs an ubuntu
workstation install - same kernel version.
Any non-statically linked executable I put in the image is getting an
"Illegal instruction" error.
I've attached the script which is generating the initrd. This is the
bit that's copying in the non-static binaries:
---
for file in ls ifconfig mount modprobe lsmod insmod ; do
fullpath=`which $file`
cp $fullpath $MINIROOT/bin
for lib in `ldd $fullpath | awk '{print $3}'`; do
cp $lib $MINIROOT/lib
done
done
---
Does anyone know what could be causing an "Illegal instruction" error
for non-static binaries running from an initrd image?
More generally:
Is anyone working on something similiar? Is this a suitable forum for
this topic? If not, apologies, could someone advise a more suitable forum?
thanks!
Andy.
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