console no responding to key in.

[Polytropon]

On Fri, 16 Apr 2010 12:20:46 -0400, "Jessie Xu" <Jessie.Xu at cryptologic.com> wrote:
> But I have some of consoles did work - response the key in after the
> keyboard pluged in after. 

This could be a configuration topic. In /etc/ttys you can
intendedly disable consoles (virtual terminals). If this
has been the case, trying to login locally won't work.

You could try to boot the system from a live CD or DVD
to check the configuration.

If you can reboot the machines, try to enter into single
user mode. In this case, local console login usually is
enabled, but it may require the root password.

See "man 5 ttys" for possible details.



> This is important. Almost all the servers in rack don't have keyboard
> collected unless we need to login to console.

As it has been mentioned, connecting a PS/2 keyboard to a
running machine can be a really bad idea - even causing
a defect of the PS/2 keyboard connectors.

And with USB, you're mostly unlucky on FreeBSD 4 machines
due to the lack of kbdmux / automatisms like via devd.



> I couldn't plug in the keyboard then reboot the server to get access to
> the console.  

If configured properly, it should be sufficient to press
the power key to initiate a controlled system shutdown.
This should give you the chance to try SUM or a live CD.


-- 
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...