[clug] remote power cycling many machines

Xi Yang hiyangxi at gmail.com
Sat Apr 4 09:34:07 UTC 2020

Hi Bob,

I was using a USB controlled relay module to control the front-control
panel collector wired the RESET SW pins on the motherboard, which is
very easy to be made and installed on PCs. A few of Steve's machines
in the CECS machine room still have them installed. I think I was
using this module


On Sat, Apr 4, 2020 at 8:17 PM Robert Edwards via linux
<linux at lists.samba.org> wrote:
> Hi all,
> Hope you are all keeping safe and healthy.
> During these strange times, I find myself responsible for a larger
> than expected cohort of random machines spread across multiple
> buildings in various peoples offices, which they are no longer
> permitted physical access to.
> These machines have been left running but seem to randomly need to
> be power cycled for various reasons - some are running 'doze and
> others, running Linux, seem to get randomly shutdown by various
> remote users for whatever reason.
> Many of the servers in machine rooms that I am responsible for
> have various forms of Lights Out Management (LOM), such as iDRAC
> or BMC etc., so can be remotely managed, as required (generally
> don't need it, though).
> So, for this vast array of random machines in offices, I have been
> researching various generic options for LOM and/or remote power
> control.
> There used to be some PCI cards that could do much of this (eg.
> https://www.startech.com/support/SV1110IPPCI) but seem to be largely
> discontinued. These days Remote KVM over IP seems to be the
> preferred option, but generally has no provision for power control/cycling.
> There are instructions on the web to set up, eg., a RaspPi to do
> this, but making up 20 or more seems like a big job (eg.
> https://github.com/Fmstrat/diy-ipmi).
> I could go for "smart" power-boards, but need a wired way to
> control them (I don't want to rely on WiFi or other wireless
> technologies).
> What have others tried/can recommend?
> cheers,
> Bob Edwards
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