Re: Sending poweroff command over LAN.

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Hello!

I am not an expert, but I would like to give my $0.02 in this:
One possible way to achive remote power off is like this:

Lets assume you have server A and server B.
UPS sends power off signal to server A.
Now you want to power off server B also.

Create a user on server B, say with name "reboot"
The default shell - i.e. the program it will execute
on login - will be a script. No password.
In this script you can put shutsys poweroff (the
shutdown commands).

Now on Server A, when it goes down, it will execute a
script - say netshut - in which there will be a command
   rlogin serverB -l reboot

I agree that this description is not accurate in all
aspects, but this is just an outline of the plan.

Thanks,
Atul Sowani.
12.Jul.2002

On Fri, 12 Jul 2002 09:14 +0200, Trevor Fraser wrote:

u>
u> ----- Original Message -----
u> From: Trevor Fraser
u> To: clug-tech@clug.org.za
u> Sent: Thursday, July 11, 2002 2:41 PM
u> Subject: Sending poweroff command over LAN.
u>
u>
u> Hello all.
u>
u> I've got two Red Hat Linux servers, one's a file server, the other a route/internet server. I've got an APC smart-UPS 1000. The UPS sends a shutdown signal to the file server via a serial cable. You can *$buy$*! an Interface Expander to get two serial ports out of the UPS, but isn't good old Linux capable of much more than the usual buy-buy-buy.
u>
u>  What I want to attempt to do is to get the server which is connected to the UPS, when powering down, to send the other server a poweroff/run-level 6 signal via the lan.
u>
u> Is this possible?
u>
u> What proceedure would I use, and where would I find the relevent info?
u>
u> Is writing a shell script on the right track, or doesn't this work over the lan?
u>
u> Reguards, Trevor.
u>



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