Emergency Shutdown scripts?
I have been tasked with providing a method of shutting down our Linux + Unix farms in a simple way. This would be used in the event of an air conditioning failure, UPS failure or some other disaster which required us to shut everything down quickly.
We are running a mixture of Linux distros, Red Hat 7-9, Mandrake 10, Solaris 7-9. I would like to know if anyone else has got a method for performing such shutdowns - I don't want to start reinventing the wheel.
I have full root access to all the machine, so access is not a problem. I'd don't want a monitoring daemon running which is waiting to shut the box down (for obvious reasons).
My initial thoughts on the problem was to use a script issued from one machine which would open ssh sessions on the other machines and issue the shutdown command. Does anyone have anything like this that they could share with me? Or do you have another insight into this?
Many thanks in advance for any help