Another option is to tie a transistor/relay/whatever in parallel with the VM servers power button and connect that to an output on something like a RasPi. Not as dead simple as the CD drive method, but would use less power.
Aside - CD drive method reminds me of this: http://www.youtube.com/watch?v=bYcF_xX2DE8 Ben On Wed, Aug 29, 2012 at 9:31 PM, chris kluka <[email protected]> wrote: > Dont let the CD tray open all the way. > > Most CD Trays will "give up" if they bump into something before they are > fully out, and go back in after a second. > > > On Wed, Aug 29, 2012 at 9:16 PM, Roswyne <[email protected]> wrote: > >> That would be awesome. :) >> >> But don't you normally hold the power button in for a few seconds (till >> it 'grabs') and then have to release it? I'm not sure what would happen if >> you held it continuously... >> >> >> >> On Aug 29, 2012, at 6:57 PM, chris kluka <[email protected]> wrote: >> >> This is all I can picture... >> >> I give you, the "Rebot". >> >> <image.png> >> >> >> On Wed, Aug 29, 2012 at 4:15 PM, Mark Jenkins < <[email protected]> >> [email protected]> wrote: >> >>> On 08/29/12 15:55, Roswyne wrote: >>> >>>> I don't think a "physical" phone line is likely to be practical at this >>>> point (due to the extra cost), though I'll admit it would have other >>>> advantages. (You can't use the VOIP phone at the space to tell Colin >>>> that internet access is out, for example.) >>>> >>> >>> But would it be possible to "relay" a signal received over the internet >>>> connection to the RS232 port to trigger a soft shutdown remotely? >>>> >>> >>> I mentioned that as a yes, but it's not as good as what Chris suggests. >>> >>> Normally on a sever you run a login daemon on the serial (RS232) port as >>> a backup if regular remote access isn't up. So if you connect to that you >>> got a login prompt and then a command prompt and then can type "reboot" or >>> "halt". >>> >>> But, that's a lot of user space processes that still have to be able to >>> work correctly. There could (in theory) be a situation where those >>> processes don't respond, but a userspace daemon in charge of picking up the >>> button press is able to respond and perform a soft shutdown. >>> >>> Having remote access to the serial port is most useful for the situation >>> where you've screwed up your network configuration on the server and need >>> to get into it another way. >>> >>> The only other way to guarantee the ability to attempt a soft reboot >>> without installing an embedded system inside the computer (like the card >>> Chris mentions) would be to contruct a robot/machine that goes up to the >>> button and presses it. >>> >>> >>> >>> >>> ______________________________**_________________ >>> SkullSpace Discuss Mailing List >>> Help: <http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss> >>> http://www.skullspace.ca/wiki/**index.php/Mailing_List#Discuss >>> Archive: <https://groups.google.com/group/skullspace-discuss-archive/> >>> https://groups.google.com/**group/skullspace-discuss-**archive/ >>> >> >> _______________________________________________ >> SkullSpace Discuss Mailing List >> Help: <http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss> >> http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >> Archive: <https://groups.google.com/group/skullspace-discuss-archive/> >> https://groups.google.com/group/skullspace-discuss-archive/ >> >> >> _______________________________________________ >> SkullSpace Discuss Mailing List >> Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >> Archive: https://groups.google.com/group/skullspace-discuss-archive/ >> > > > _______________________________________________ > SkullSpace Discuss Mailing List > Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss > Archive: https://groups.google.com/group/skullspace-discuss-archive/ >
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