Hello oscar friends,

There is a feature in oscar that is slightly disturbing,
or may be it's just my lack of understanding of oscar
capabilities. Here is the problem:

Every time you reinstall the clients because of an update
to the image on the server (e.g. updated RPM), you need
to let your clients reboot from the network (PXE) or from
a floppy. Now once your clients have reinstalled themselves,
you want them of course to reboot from their own system
on their local disks. To do that, you need either to remove
the floppy from the drive or to change the boot sequence
in the BIOS, which means a human intervention on all 
worker nodes after every system update. This is clearly
unacceptable for a cluster containing a large number
of machines. Given that I am working on building a
system which will contain up to 1000 worker nodes and
which is likely to experience ver frequent software
updates, I need to find a solution to this problem.

How are people managing big clusters dealing with this 
issue?

Thank you,

Vuko


-- 
===========================================================|
 Vuko Brigljevic,    EP Research Fellow                    |
 CERN - European Laboratory for Particle Physics           |
 --------------------------------------------------------- |
 Mail Address: CERN, Div. EP, 1211 Geneve 23 (Switzerland) |
 Office      : B40-2B08                                    |
 Phone       : +41-22-767 1662                             |
 www         : http://cern.ch/vuko                         |
===========================================================|



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