Looking at the dhcpd.leases file, it appears the determining factor in which
file a node gets when it PXE boots if the client-architecture. Unfortunately, I
can't translate the different values I see in the leases file ("00:00" and
"00:09"). So while I see your point, and not keeping both files up to date
seems unintuitive on the surface, I don't know enough about how makedhcp is
building this file and the conditions in which a node will receive the ".uefi"
file. I have a cluster I'm working on with all xnba nodes, some stateful and
some stateless. I don't see the uefi file mentioned in the console logs of any
of them.
Regards,
Christian Caruthers
Lenovo Professional Services
Mobile: 757-289-9872
-----Original Message-----
From: Thomas HUMMEL <[email protected]>
Sent: Tuesday, March 2, 2021 04:37
To: [email protected]
Subject: Re: [xcat-user] [External] nodeset and UEFI boot xnba files
On 3/1/21 6:27 PM, Christian Caruthers wrote:
> If it changes to something like:
>
> #!gpxe
> #boot
> Exit
Yes it is
> Of course, you should not configure a stateless node as "boot"
I know that, I just tested the behavior relative to file content for both cases
(stateless and stateful)
> Stateful nodes shouldn't get anything from a PXE request unless they're being
> (re)discovered or (re)installed.
> If they're "full UEFI," they shouldn't be sending a PXE request after they're
> installed as the OS would have inserted its own entry at the top of the boot
> order during install.
Correct.
However I'd say that for consistency sake all files (.elilo and .uefi)
should be changed as well don't you think ?
Imagine a stateful node in production which for some reason gets its
UEFI manually changed back to PXE first : it would get reinstalled
instead of just booting as one could have expected having previously run
nodeset <node> boot. This seems counter intuitive and dangerous to me.
The second point (unrelated to my original post) is that by changing
UEFI boot order to disk first, a stateful install kind of detach itself
from being xCAT handled. I mean, to reinstall them, you'd have to
manually (or via ipmitool or some local action) set the order to PXE
fist beforehand, which could be annoying if you have many of them while
having a script issuing just an Exit (nodeset boot) would provide both
possibilities (boot from disk or reinstall).
So basically I think that it could be positive to
- change .elilo and .uefi content as well when running nodeset
- have a stateful install leave PXE first
but I might not take into account some scenarii
What do you think ?
Thanks for you help
--
Thomas HUMMEL
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