[ubuntu-uk] Temperature

[Avi]

Dave Hanson wrote:

> So know I guess is  a good time to be thinking about home server
> temperatures (after the heat of course) Does anyone have a
> recommendation for a program which could send an email when the
> machines temp reaches a certain degree. Obviously without a GUI?

lm-sensors, cron & perl or bash? I've not seen a ready made thing, but
something like this untested bit of bash cronned to run every five or so
minutes would do:

#! /bin/bash

# threshold above which we're concerned about
THRESHOLD=28
# The temperature (probably of core 1)
TEMP=$(sensors -u | grep temp1 | tail -n1 | awk '{print $2}')
# A file to touch to keep track of things
TOUCHFILE=/root/.sensors

if [[ $TEMP > $THRESHOLD ]]; then
	if [ ! -f $TOUCHFILE ]; then
		touch $TOUCHFILE
		echo "Temperature is $TEMP celsius" | mail -s 
		"Sweltering Servers" you at yourdomain.com
	fi
else
	if [ -f $TOUCHFILE ]; then
		rm $TOUCHFILE
	fi
fi

It's not tested, but it should be a reasonable starting point from
which you can get to something that works :)

Might be worth graphing the data, too, with something like Munin?
Especially if you can get several temperature sensors on the go, it'll
help you determine which is generally the hottest.

-- 
Avi