UNIX for Dummies Questions & Answers

I just installed lm-sensor in my terminal and it's working, however i really don't know how to analyze what I have, Any help will be appreciated, Thanks
Here is the reading in my terminal,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +40.0°C (crit = +124.0°C)

k8temp-pci-00c3
Adapter: PCI adapter
Core0 Temp: +7.0°C
Core0 Temp: -3.0°C
Core1 Temp: -3.0°C
Core1 Temp: +2.0°C ________________

You could setup a cron job that runs lm-sensor and puts the into a temporary log file and then continue in the same script to compare the values given with what the upper thresholds should be, e.g. using the temp1 line:

Code:

lm-sensor > ${TEMPFILE} 2>&1
TEMP=`grep temp1 ${TEMPFILE} | awk '{ print $2 }' | sed -e 's/+//' | awk -F"." '{ print $1 }'`
THRESHOLD=`grep temp1 ${TEMPFILE} | awk '{ print $5 }' | sed -e 's/+//' | awk -F"." '{ print $1 }'`
if [ ${TEMP} -ge ${THRSHOLD} ]; then
  logger -p local0.crit2 "temp1 is too high!"
fi

Crude and only handles integer temperatures.
The logger line could of course send an email.

I'm sorry I'm too new to get what you've written, I'm totaly new.
Thanks

Okay, if you save the above script as say /usr/local/sbin/lm_sensor_temperature_check.sh with the lines:
#!/bin/ksh
or
#!/bin/bash
as the very first line to specify what shell the script is to run in. Run:

Code:

# chmod 500 /usr/local/sbin/lm_sensor_temperature_check.sh

to make it executable.

Add a line to root crontab to run this script once an hour do the following:

Code:

# crontab -l > /tmp/root.crontab
# echo "0 * * * * /usr/local/sbin/lm_sensor_temperature_check.sh" >> /tmp/root.crontab
# crontab  /tmp/root.crontab

This will now run every hour and if the temp1 line from lm_sensor indicates that the measured temperature is above the 124 critical temperature then it will add a line to the /var/log/syslog log file (check the /etc/syslog.conf log to confirm where the alarm you select gets logged to) that you can then get HP OVO of BMC patrol (or whatever system monitoring software you are using) to look for the "temp1 is too high" string and raise an alert, or else you could replace the "logger -p" line in the script with a line to send an email somewhere, e.g.:

Code:

echo "ALERT: The measured temperature of ${TEMP} is great then critical temp. of ${THRSHOLD}." > /tmp/temp.log
mailx -s "Machines `uname -n` temperature is too high" user@foo.com < /tmp/temp.log