Another suggestion:
When I'm rebuilding clusters here, I'll frequently just make the boot order on the clients HD, then PXE. So that way, PXE is only used as a boot device when the HD is not a valid boot device. The trick comes in there... for new HDs, or new machines, the HD is already invalid and I don't have to do anything. For existing machines, it depends on me to mung the boot sector of the HD before rebooting... So- if this fits your needs, you could do it this way. I just run:
dd if=/dev/zero of=/dev/hda count=2
And that's enough to invalidate the HD as a boot device. (obviously, substitute hda w/ sda for scsi, etc)
Jeremy
At 02:22 PM 10/1/2003 -0700, Bernard Li wrote:
Hey Sean:
This is odd - I am actually trying to do what you mentioned in your message but I noticed that I only have 2 files in my /tftpboot/pxelinux.cfg:
[EMAIL PROTECTED] pxelinux.cfg]# ls -l total 8 -rw-r--r-- 1 root root 189 Sep 29 15:08 default -rw-r--r-- 1 root root 721 Sep 29 15:08 message.txt
and this doesn't change throughout an Oscar installation of the nodes - perhaps I'm doing something wrong here.
I am actually trying to setup Oscar on these IBM x330 nodes and it's not as easy setting up the bootup settings as our Blade Center with all the centralized management utilities. For the x330's I had to go into BIOS to change the boot sequence individually - not fun ;-)
Cheers,
Bernard
Sean Safron wrote:
I assume you are trying avoid the situation where you do a network install, and then when the node reboots, it doesn't reboot from the hard drive, but does another network install! There are various ways to get around this problem, all of which involve moving the HEX file out of the way after the install is complete, or changing the node's HEX file to boot from the local disk after the install is complete. One of these techniques is described in the AutoYaST2 guide (http://www.suse.de/~nashif/autoinstall/8.1/html/x789.html#AEN840). Even if you don't use SuSE, this technique applies to other Linux distros. Here is the relevant text: You can watch the syslog file on your TFTP server and whenever a client got its initial RAM disk transmitted, you can remove the symlink for that machine from the pxelinux.cfg directory. This forces the client to load the default configuration which says: "Boot from local disk!" when it reboots after AutoYaST is done.
If this is not the situation that you are encountering, then I don't understand the problem. It usually takes less than a second for pxe to scan through all the combinations of the HEX filename and eventually find the default problem. -Sean --------------------------------------------- Sean S. Safron - Linux Cluster Development - IBM, Poughkeepsie, NY 845-433-8103 (tieline 293-8103) POK/414 1-24 [EMAIL PROTECTED]
Kaizaad Bilimorya
<[EMAIL PROTECTED]> To: [EMAIL PROTECTED]
Sent by: cc: [EMAIL PROTECTED]
[EMAIL PROTECTED] Subject: [Sisuite-users] hex ipaddress override
ceforge.net
09/30/2003 07:24 PM
HiYa, Does anybody know of a way to overide the network boot setting so when you network boot a client, instead of it trying to load, pxelimux.cfg/<HEX_IP_OF_CLIENT> pxelimux.cfg/<HEX_IP_OF_CLIENT - last character> pxelimux.cfg/<HEX_IP_OF_CLIENT- last 2 characters> pxelimux.cfg/<HEX_IP_OF_CLIENT- last 3 characters> pxelimux.cfg/<HEX_IP_OF_CLIENT- last 4 characters> pxelimux.cfg/<HEX_IP_OF_CLIENT- last 5 characters> pxelimux.cfg/<HEX_IP_OF_CLIENT- last 6 characters> pxelimux.cfg/<HEX_IP_OF_CLIENT- last 7 characters> pxelimux.cfg/default it goes after the pxelimux.cfg/default right away?
thanks kaizaad
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