Remote linux shutdown on frozen system

[skypilot]

I froze a remote linux system while using VNC, and I need to restart it or un-freeze it. Keep in mind I'm not an expert sysad or anything.

The system responds to pings, but I cannot ssh in. Is there any other strategy I can employ?

 

[Nothinman]

Not really, if you can't login then you can't reboot it without some sort of remote exploit. Setting up a remote sysrq daemon[1] might be an option for the future, but I've never used it so I don't know who well it works and if you don't properly secure it anyone will be able to reboot your system whenever they want.

[1] http://debaday.debian.net/2007/01/03/sy...on-to-manage-linux-sysrq-over-network/

 

[greylica]

x11vnc can solve it too if you are using UltraVNc or something, but you will not be able to transfer files.
Sometimes when I want to control external machines and transfer files I use Ultravnc under Wine. But the reverse is very unstable. Ultravnc over X11
sometimes can freeze up X. But a CTRL + ALT + BACKSPACE is impossible if the machine is alone.

 

[silverpig]

Use a reeeeaaalllly long stick to push the reset button.

 

[sourceninja]

The question would be did linux lock up, or did X lock up? Probably X locked up. If you have ssh access, you can ssh in and restart X.

 

[silverpig]

Originally posted by: sourceninja
The question would be did linux lock up, or did X lock up? Probably X locked up. If you have ssh access, you can ssh in and restart X.

Dude... did you read the OP?

🙂

 

[DaiShan]

Originally posted by: silverpig

Originally posted by: sourceninja
The question would be did linux lock up, or did X lock up? Probably X locked up. If you have ssh access, you can ssh in and restart X.

Dude... did you read the OP?

🙂

Well the question becomes: does the OP even have sshd configured and running? I agree with Sourceninja that the problem is most likely X related. SSH is your friend! As for this situation there isn't much that you can do.

 

[Nothinman]

Well the question becomes: does the OP even have sshd configured and running? I agree with Sourceninja that the problem is most likely X related. SSH is your friend! As for this situation there isn't much that you can do.

The OP said he can't ssh in which usually means that the filesystem holding the shell has been shutdown or the drive it's on is having problems.