Date: Fri, 30 Jan 1998 15:59:49 -0800 From: Gopakumar H Pillai <gopu@global.com> To: Calin Andrian <calin@ibd.dbio.ro> Cc: freebsd-hackers@FreeBSD.ORG, FreeBSD Questions <questions@FreeBSD.ORG> Subject: Re: APC Back UPS monitor Message-ID: <34D26975.1668BA80@global.com> References: <Pine.BSF.3.96.980119165731.827A-100000@ibd.dbio.ro>
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I saw this mail today since I was working on montioring our UPS. Be patient, this is a long one. May help lot of others. I have a APC SmartUPS 1000 (rack mount). I need to use the serial port connection to monitor power failure to shutdown all systems. APC has a software named apc_ssd (ssd standing for Simple Signalling Daemon) which actually does the work to certain extend. It's a C++ code. They give it free, but licensed only to use internally. Basically, I am planning to look into the APC ssd code and modify it. I do not know any commands which could be given the UPS. If u have the command set could u please send it to me? Actually I never connected to the UPS and checked it out. I am planning to try your code too. Here is my need: I have two UPS, both APC SmartUPS 1000. I have an external network and an internal one. One is used on external and another internal. When the power goes down I want the UPS monitor to wait for some seconds and then notify a list of users by Paging and notify other machines to shutdown and notify the UPS to shutdown after some seconds (say 60) and shutdown itself. After the specified seconds the UPS shutsdown itself and comes up when the power restores and feeding power to all machines connected. Also I am planning a temperature monitor, which also does similar thing except that the machines should never be powered up again until manual intervention. My external network is vulnerable. The bastion host could be directly hooked up to the UPS and it can tell others to shutdown. Or I talk only to one UPS and hook the serial ports of my internal bastion host to external bastion host. Which is better for security reasons? What paging software should I use. I looked at qpage, it needs a SNPP server. Where can I get one? Can kermit do the job? How should I request other machines to shutdown? Is broadcast on local network ok for security reasons? Hooking up Serial ports as a chain - doesn't look feasible. Any other idea? If I fix the APC ssd, I shall make it available to all, if APC agrees or shall give to APC so that everyone can from there. Thanks in prior for ur help. --Gopu Calin Andrian wrote: > > Hi ! > > I searched all over the place for a monitoring package for APC backups and > did not find any. Finally I wrote a small driver and a monitoring daemon, > with good results. > > I didn't use the sio driver because it seems (maybe I'm wrong) that once > you successfully open the tty port, both DTR and RTS go high, causing the > (dumb) backups to immediately shut down. > > My package monitors the line-fail status and shuts down the system and the > UPS if the line is out for more than you-name-it seconds. > > How could I make it public ? > (I mean if anybody is interested) > > Calin
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