69 lines
2.3 KiB
Plaintext
69 lines
2.3 KiB
Plaintext
Desc: Using upsmon and your pager together
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File: pager.txt
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Date: 28 May 2001
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Auth: Russell Kroll <rkroll@exploits.org>
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upsmon can call out to a helper script or program when the UPS changes
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state. The example upsmon.conf has a full list of which state changes
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are available - ONLINE, ONBATT, LOWBATT, and more.
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The simple approach
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-------------------
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- Set EXEC flags on various things in upsmon.conf
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NOTIFYFLAG ONBATT EXEC
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NOTIFYFLAG ONLINE EXEC
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If you want other things like WALL or SYSLOG to happen, just add them.
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NOTIFYFLAG ONBATT EXEC+WALL+SYSLOG
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You get the idea.
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- Tell upsmon where your script is
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NOTIFYCMD /path/to/my/script
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- Make a simple script like this at that location:
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#! /bin/bash
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echo "$*" | sendmail -F"ups@mybox" bofh@pager.example.com
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- Restart upsmon, pull the plug, and see what happens.
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That approach is bare-bones, but you should get the text content of the
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alert in the body of the message, since upsmon passes the alert text
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(from NOTIFYMSG) as an argument.
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This will send mail every time something happens which may become annoying
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rather quickly, especially for simple power fluctuations. To only send
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messages after some interval, see the upssched.txt file for information
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on offset events.
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Using more advanced features
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----------------------------
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Your helper script will be run with a few environment variables set.
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UPSNAME - the name of the system that generated the change.
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This will be one of your identifiers from the MONITOR
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lines in upsmon.conf.
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NOTIFYTYPE - this will be ONLINE, ONBATT, or whatever event took
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place which made upsmon call your script.
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You can use these to do different things based on which system has
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changed state. You could have it only send pages for an important
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system while totally ignoring a known trouble spot, for example.
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Suppressing notify storms
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-------------------------
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upsmon will call your script every time an event happens that has the
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EXEC flag set. This means a quick power failure that lasts mere seconds
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might generate several pages in a row. To suppress this sort of
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annoyance, use upssched as your NOTIFYCMD program, and configure it to
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send pages after a timer has elapsed. See upssched.txt for more
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information.
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