Logging into bogged down server

[Harold Hallikainen]

> On Wed, 2006-04-05 at 07:53 -0700, Harold Hallikainen wrote:
>> > On Fri, 2006-03-31 at 20:07 -0800, Harold Hallikainen wrote:
>> >> For some reason, this email client deletes all the received message
>> when
>> >> I reply
>> >> and then select text instead of html... When I get back home and
>> restart
>> >> the FC4
>> >> machine, I'll get back on SquirrelMail. Anyways... I'm STILL trying
>> to
>> >> ssh into
>> >> the bogged down server. No luck yet. I did change the DNS server to
>> send
>> >> stuff
>> >> away from this server in the hopes it would eventuall finish off all
>> >> those
>> >> processes and start accepting my ssh login (to the IP address instead
>> of
>> >> the
>> >> domain). No luck so far. In a couple days I can go hit the reset
>> button.
>> >>
>> >> Besides the modifications to configs suggested so far, I'm also
>> thinking
>> >> of
>> >> adding a hardware watchdog timer to the machine so it'll reset itself
>> >> should it
>> >> ever do this again. I've seen a couple circuits on the web, based on
>> a
>> >> 555 timer.
>> >> One of them I found looked like it could be locked up if the machine
>> >> crashed
>> >> during a watchdog reset. Back when I was designing MC6802 based
>> systems,
>> >> I did a
>> >> watchdog timer like that and had to drive 100 miles in Kansas to hit
>> the
>> >> reset
>> >> switch on a system. Watchdog timers I design now reset on an edge
>> >> instead of a
>> >> level so if the reset line gets stuck at either level, the watchdog
>> will
>> >> time out
>> >> and reset the system. So, that's my next project!
>> >
>> > Useful.  We use remote-controlled power strips.  You can log into the
>> > strip (modem or TCP/IP) and power-cycle any of the outlets on it.
>> > HIGHLY recommended for "dark data centers".
>> >
>>
>> When I got back home, I found the video out of the server also frozen. I
>> didn't see any disk activity. Hit the reset button and all is well. I'll
>> go ahead and make the suggested config file changes. Meanwhile, any
>> suggestions on a particular low cost remote controlled (PCP/IP) power
>> strip?
>
> APC makes several models, depending on how many outlets you need and
> what the power load is.  We use the 8-port 20-amp unit a lot.  One good
> source is http://www.wti.com/power.htm or you can google something like
> "remote +control +power +strips".  There are lots of them out there.
> Warning: The prices start at about $400 US.
>


THANKS! I did manage to find one for under $100. It's at
http://www.digital-loggers.com/lpc.html . Besides web access, it will real
soon now) be able to ping the server and reboot if the ping fails. I've
got one on order.

Harold


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