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Old 11-08-2008, 07:26 AM   #1
lchxr
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Remote shutdown via ssh frozen the local console


I logged into the remote computer via 'ssh root@<remoteIP>' and when typing the root password, I got the '#' prompt. Then I typed in a console 'shutdown -h now', the remote computer was really shutdown, but my local console was frozen (I am using a text console). I had to 'Ctrl+Alt+F2' to switch to another terminal to continue my work. Does anyone know how to fix this problem?
 
Old 11-08-2008, 07:40 AM   #2
tredegar
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ssh was probably still running.
You could have exited it with <CTRL>-c
 
Old 11-08-2008, 09:10 AM   #3
clvic
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Sometimes this happens to me also... you can avoid the problem by scheduling the shutdown, in order to have enough time to logout before the shutdown begins (see the manpage of the shutdown command).
When the console is frozen, you can always find the associated ssh process and kill it with a -9 signal or another "violent" signal.
 
Old 11-08-2008, 11:02 AM   #4
lchxr
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Quote:
Originally Posted by tredegar View Post
ssh was probably still running.
You could have exited it with <CTRL>-c
No, <Ctrl>-C has no effect.
 
Old 11-08-2008, 11:08 AM   #5
lchxr
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Quote:
Originally Posted by clvic View Post
Sometimes this happens to me also... you can avoid the problem by scheduling the shutdown, in order to have enough time to logout before the shutdown begins (see the manpage of the shutdown command).
When the console is frozen, you can always find the associated ssh process and kill it with a -9 signal or another "violent" signal.
Thank you for you reply. It could have many solutions,but I want to know the reason. Sometimes it exited with "closed by remote session", sometimes it is frozen.
 
Old 11-08-2008, 02:55 PM   #6
tredegar
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My shutdowns close cleanly:
Code:
tred@vaio:~$ ssh server
tred@server:~$ sudo -i
Password:
root@server:~# shutdown -h now

Broadcast message from root@server (pts/1) (Sat Nov  8 19:51:03 2008):

The system is going down for system halt NOW!
root@server:~# Connection to server closed by remote host.
Connection to server closed.
tred@vaio:~$
My version of ssh is 1.4.7. Maybe you need to update yours?

And you should not have root logins by ssh enabled. Do it as I have done, above: First login as yourself, then gain root privileges. root logins should be DENIED to ssh

Last edited by tredegar; 11-08-2008 at 02:59 PM. Reason: Don't enable root logins
 
  


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