Aldo Saavedra wrote:
Hi,
I was wondering if someone would an insightful comment.
From reading past posts I managed to get a node to boot from a server
using PXE+DHCP+HTTP
The image resides in /tftpboot and the configuration is
default SL45
serial 0,9600n8
timeout 100
prompt 1
label localboot
LOCALBOOT 0
label SL45
kernel SL45-vmlinuz-boot
append console=ttyS0,38400 console=tty0 load_ramdisk=1
initrd=SL45-initrd.img-boot root=/dev/sda1
the node finds it and installs SL 45
and reboots... two questions
1) If this was a diskless node.. rebooting would not be helpful so how
is that installation
done. (I suppose I would need to remove the root=/dev/sda1 but does SL
installation always
needs to be reboot?)
The anaconda installer doesn't work for diskless nodes. For a diskless
node, you need to have the system stored somewhere. Usually it is
accessed via NFS. The process is basically to take an already installed
system and copy the files to the NFS accessed area. Then you PXE boot
the host and tell it to mount / from the NFS area. There are various
how-to's about this process.
2) If it installs to the hard disk.. then how can I change the default
PXE configuration so it performs a localboot the next time. In this case
while it was powering down I changed the file so the default would be
localboot .
You have to get the pxelinux config file changed somehow (or change the
node BIOS to boot the harddrive before PXE). Cluster software packages
such as ROCKS or xCAT provide a mechanism to do this automatically. (A
server runs on front-end waiting for indication from client that the
install has finished, and then the change is made.)
This did the trick, and the machine started booting from the disk but
then an error CRC error made the system halt while it was uncompressing
the linux image (the correct one 2.6.9.55) .
Any ideas?
Might be a hardware issue, has this node been reliable? On reboot, do
you get the exact same error?
Good luck,
Tom Rockwell
Michigan State U.
Cheers,
Aldo
--
--
Aldo F. Saavedra
Phone: +61 (0) 2 9351 5970
Fax : +61 (0) 2 9351 7726
Email: [EMAIL PROTECTED]
Mail : High Energy Physics
School of Physics A28
University of Sydney NSW 2006
Sydney, Australia
