[ale] preventing interruption of auto install

[Dow Hurst]

The simplest fix is to call and have someone put a sign on the console 
with the message that upgrades are in process during a certain time 
period and please don't use the machine or mess with it.
Dow

lyric hartley wrote:
>I have to do a bunch of remote autoinstalls using yast2. I need to
>make sure that the someone does not try to interrupt the install.
>Currently, I have 
>-disabled the abort button. 
>-added noshell=1 to the boot options. (however, this does not limit
>viewing the logging done to tty3 and 4)
>-removed the reboot if crl-alt-del is pressed in inittab in the root image 
>(however, it will still reboot from tty3 or 4...which leads me to believe my 
>change is not doing anything)
>
>my current remaining issues are that:
>you can kill X with ctrl-alt-backspace and kill the installation
>you can reboot with ctrl-alt-del on tty3 and 4 (I would prefer that these were 
>not even accessible...I tried removing the other tty* 
>from /etc/sysconfig/keyboard in the root image but it had no affect)
>
>I am not sure what of this is being done by yast and what is actually
>getting controlled by the files in the root image...it seems that when
>I make changes to the files the don't have any affect
>
>yes, you could still hit the power button, pull the plug, etc. but I
>can't do anything about that...but I would like to do what I can...as
>having to send someone on-site could be costly
>
>Any advice would be great!
>thanks a lot!
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