On Fri, 8 Feb 2008, Lon Hohberger wrote:
Well, here's a cheap 'out' ;)
Ebay item # 250213910258
8 port WTI NPS for $70 + $15 s/h.
Indeed, that would be tempting if it wasn't on the wrong side of the
atlantic. A more local search for similar things doesn't seem to come up
with anything. :-(
*Don't flame me, i didn't want to spam the list with commerial stuff but
thought this might help you out*
If your interested in a powerswitch solution i would recommend you to look
at the solutions from www.lubenco.nl
They have 8 port (C13) 10 amp powerswitches with load monitoring and
snmp configuration support for about 117 euro a pice. (new) If your
willing to buy in bulk the price even drops well below 100 euro.
Guys, this is good stuff - the problem is we need to make an agent that
can talk to them before we can really solve Gordan's problem. Does
anyone want to volunteer? I'll write up a fence agent API "howto"
today ...
Thanks for all this, guys, much appreciated. :-)
I just had another thought. Most motherboards these days are ATX, which
means ATX type "short-pins-to-power-on" power switches. That means that as
a _REALLY_ cheap solution I could just get something like a small relay
switch and wire it into the serial port. When a pin on RS232 goes high
(e.g. DTR), it activates the switch. I think it would be pretty reliable,
and the total cost of components would be pennies. The fence agent would
also be a total of about 10 lines of code, too. :)
Can anyone think of why this wouldn't work? OK, it involves a bit of DIY,
but it would work for a 2-node cluster. With more nodes, pulsing the power
switch repeatedly might bring the node back up, which would be less than
ideal if it's _really_ nastily intermittent. But since this isn't really
scalable to cluster with more than 3 nodes (2 serial ports per node), it
probably doesn't matter.
Gordan
--
Linux-cluster mailing list
Linux-cluster@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/linux-cluster
