LXer: Linux: HowTo: Emergency Reboot a Remote Machine
 

Published at LXer:

Sometimes the machine you're working on has a little oops. Maybe the reboot command has hung and the system will not shutdown or a kernel panic has occurred and although you still have shell access, there is little more you can do with the machine. The solution is simple: you need to hard reboot the machine. But you're in Phoenix and the machine is in L.A. Like any good system administrator, you have the machine hooked up to an IP-KVM (or serial over IP, if the machine is headless), but the magic SysRq keys won't send properly. So what's a sysadmin to do?

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