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Old 12-28-2007, 05:57 PM   #1
Registered: Jan 2004
Location: Almost Canada :-p
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Use Modem to Call Phone Number

Hi Folks,

I've been having some issues with two of our linux servers (they just mysteriously stop responding at random times - brand new, have tried replacing all the parts). Anyway, I think I have the problem fixed, but it has brought up an interesting problem: I don't know when they go down. We have some modems that we've salvaged from various operations, and I'd like to know if there is a way to use one of said modems (or just buy a new one - external of course) to call me when I run a command (i.e. if the server doesn't respond to a ping for over 30 seconds, call me). I was assuming that mgetty/vgetty could do that, but I didn't find any hard evidence saying it could. Any thoughts on this? And on a side note, any modems that are particularly recommended?

Old 12-28-2007, 06:10 PM   #2
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Registered: Feb 2003
Location: Blue Ridge Mountain
Distribution: Linux Mint 17, Debian 8
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Take a look at minicom. I know that minicom will do what you want if somebody types in the commands. Minicom has a script feature which I have never used where it runs a script at startup without human intervention. Something like:

minicom -S /root/commands/minicom.script

You might be able to do what you want with a minicom script.

Steve Stites
Old 02-28-2008, 08:21 PM   #3
Registered: Jan 2004
Location: Almost Canada :-p
Posts: 34

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This is kind of a 'wrap up' of what I ended up doing. Because I didn't want to waste any money on a USB modem (if it didn't work, we'd be throwing it into the box of oblivion) I started looking for other alternatives to getting a message to me via phone. I was looking through Webmin, and lo and behold there was an option to send a text message to my phone! It was under 'System and Server Status'. So, all of my servers are hooked into a master server via webmin now. A warning to whoever may want to set this up: make sure that it only notifies you when a system goes down. Do not have it notify you ever X minutes. I ended up getting about 108 text messages from my server when one of them was down for a day. Other than that though, it works perfectly. Thanks Webmin


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