On Thu, 2002-04-18 at 08:01, Rodent of Unusual Size wrote:
> Rrr.. one of my servers is requiring intervention (read: rebooting)
> on an almost daily basis now.  This leads to two questions:
> 
> 1. Is there any way to get access to the console through the
>    serial port?  I have another system that does this for VMS
>    and T64U systems (anyone remember VCS?), but it's unclear
>    to me whether Linux supports it -- and, if so, how I can
>    set it up.  I basically want to be able to give an irresistable
>    three finger salute through the serial port if need be, to
>    *force* a crash/reboot.

I have an actual vt220 connected to the serial port of my server - frees
up a port on my kvm switch.  *grin*  A linux box using minicom, or a
windoze box using hyperterminal would probably be fine.  

You have to have serial support turned on on the server obviously, do
not turn on "support for console on serial port".  Believe it or not,
this is not what you want.  Then you just need to add a line to your
/etc/inittab to listen for it.  I don't have access to my home box right
now so I couldn't tell you what it is, but look around the ldp - I'm
sure they have something for that.

> 2. Provided I can get in, is there any way I can *crash* the
>    system so I can take a look at a dump to figure out WIH was
>    going on to wedge it?

There's many ways to *crash* the system, I'm just not sure any of them
would be terribly useful to you.  What you need is a way to reproduce
what's happening to your server - if you give us more details I'm sure
somebody on the list will be able to help.

-- 
"Minix is one of the reasons I decided microkernels are bad.
VMS is the reason I decided VMS is bad."  -Linus Torvalds

Cole Tuininga
Lead Developer
Code Energy, Inc
[EMAIL PROTECTED]
PGP Key ID: 0x43E5755D



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