12.04 Server setup & Temp Monitoring

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farrinux
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12.04 Server setup & Temp Monitoring

Post by farrinux »

Greetings:

I have been using the guide "Build A Media Server" found on this website to build a Ubuntu12.04 server. I have been having some troubles and would like request help as I go along if possible. With that said I will start on the first issue.

The first problem I am having is with the script for monitoring the cpu temp and autoshutdown. The script is found here http://www.havetheknowhow.com/scripts/C ... utdown.txt . As the text of the script states that the output of "Sensors" is assumed to be -----. If it is different edit the required strings. I understand this and my output is different, But I seem to have something wrong as it always says it's overheat.
Here is the output of "SENSORS" on my machine.

Code: Select all

f71889fg-isa-0a00
Adapter: ISA adapter
+3.3V:        +3.31 V  
in1:          +1.07 V  (max =  +2.04 V)
in2:          +1.62 V  
in3:          +1.21 V  
in4:          +0.97 V  
in5:          +1.10 V  
in6:          +0.98 V  
3VSB:         +3.31 V  
Vbat:         +3.12 V  
fan1:        3703 RPM
fan2:        1316 RPM
fan3:        1092 RPM
temp1:        +39.0°C  (high = +255.0°C, hyst = +251.0°C)
                       (crit = +255.0°C, hyst = +251.0°C)  sensor = transistor
temp2:        +31.0°C  (high = +255.0°C, hyst = +251.0°C)
                       (crit = +255.0°C, hyst = +251.0°C)  sensor = transistor
temp3:       +109.0°C  (high = +255.0°C, hyst = +253.0°C)
                       (crit = +255.0°C, hyst = +253.0°C)  sensor = thermistor

nouveau-pci-0200
Adapter: PCI adapter
temp1:        +48.0°C  (high = +100.0°C, crit = +110.0°C)

k10temp-pci-00c3
Adapter: PCI adapter
temp1:        +22.8°C  (high = +70.0°C)

temp1 should be my CPU I believe, a dual core Phenom. I also believe that AMD processors only output 1 temp for multicores.
Here is my CPUTempShutdown.sh file as I have edited it (Note some info as posted here was changed, ie user, email for security reasons.)

Code: Select all

#!/bin/bash

# PURPOSE: Script to check temperature of CPU cores and report/shutdown if specified temperatures exceeded
#
# AUTHOR: feedback[AT]HaveTheKnowHow[DOT]com

# Expects two arguments:
#    1. Warning temperature
#    2. Critical shutdown temperature
#    eg. using ./CPUTempShutdown.sh 30 40
#        will warn when temperature of one or more cores hit 30degrees and shutdown when either hits 40degrees.

# NOTES:
# Change the strings ">>/home/htkh" as required
# Substitute string "myemail@myaddress.com" with your own email address in the string which starts "/usr/sbin/ssmtp myemail@myaddress.com"

# Assumes output from sensors command is as follows:
#
# coretemp-isa-0000
# Adapter: ISA adapter
# Core 0:      +35.0 C  (high = +78.0 C, crit = +100.0 C)  
#
# coretemp-isa-0001
# Adapter: ISA adapter
# Core 1:      +35.0 C  (high = +78.0 C, crit = +100.0 C) 
#
# if not then modify the commands str=$(sensors | grep "Core $i:") & newstr=${str:14:2} below accordingly

echo "JOB RUN AT $(date)"
echo "======================================="

echo ''
echo 'CPU Warning Limit set to => '$1
echo 'CPU Shutdown Limit set to => '$2
echo ''
echo ''

sensors

echo ''
echo ''

for i in 0 1
do

  str=$(sensors | grep "temp1: $i:")
  newstr=${str:14:2}

  if [ ${newstr}  $1 ]
  then
    echo '============================'                             >>/home/xxx/Desktop/CPUWarning.Log
    echo $(date)                                                    >>/home/xxx/Desktop/CPUWarning.Log
    echo ''                                                         >>/home/xxx/Desktop/CPUWarning.Log
    echo ' WARNING: TEMPERATURE temp1:' $i 'EXCEEDED' $1 '=>' $newstr >>/home/xxx/Desktop/CPUWarning.Log
    echo ''                                                         >>/home/xxxx/Desktop/CPUWarning.Log
    echo '============================'                             >>/home/xxx/Desktop/CPUWarning.Log
  fi
  
  if [ ${newstr}  $2 ]
  then
    echo '============================'
    echo ''
    echo 'CRITICAL: TEMPERATURE temp1:' $i 'EXCEEDED' $2 '=>' $newstr
    echo ''
    echo '============================'
    /sbin/shutdown -h now
    /usr/sbin/ssmtp me@myemail.com </home/xxx/MyScripts/hotcpu.txt
    echo 'Email Sent.....'
    exit
  else
    echo ' Temperature temp1: '$i' OK at =>' $newstr
    echo ''
  fi
done

echo 'CPU Core is within limits'
echo
I did remove the two ".ge" entries in the "if [ ${newstr} $1 ] and if [ ${newstr} $2 ] strings as I was getting a warning about them when I ran the script. Any help or advice on how to edit the script or fix the problem would be helpful.

Thank you!
User avatar
Ian
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Posts: 752
Joined: January 1st, 2011, 7:00 am

Re: 12.04 Server setup & Temp Monitoring

Post by Ian »

Hi,

Apologies for the delay in replying. Try this script and let me know how you get on.

Code: Select all

#!/bin/bash

# PURPOSE: Script to check temperature of CPU cores and report/shutdown if specified temperatures exceeded
#
# AUTHOR: feedback[AT]HaveTheKnowHow[DOT]com

# Expects two arguments:
#    1. Warning temperature
#    2. Critical shutdown temperature
#    eg. using ./CPUTempShutdown.sh 30 40
#        will warn when temperature of one or more cores hit 30degrees and shutdown when either hits 40degrees.

# NOTES:
# Change the strings ">>/home/htkh" as required
# Substitute string "myemail@myaddress.com" with your own email address in the string which starts "/usr/sbin/ssmtp myemail@myaddress.com"

# Assumes output from sensors command is as follows:
#
# coretemp-isa-0000
# Adapter: ISA adapter
# Core 0:      +35.0 C  (high = +78.0 C, crit = +100.0 C)  
#
# coretemp-isa-0001
# Adapter: ISA adapter
# Core 1:      +35.0 C  (high = +78.0 C, crit = +100.0 C) 
#
# if not then modify the commands str=$(sensors | grep "Core $i:") & newstr=${str:14:2} below accordingly

echo "JOB RUN AT $(date)"
echo "======================================="

echo ''
echo 'CPU Warning Limit set to => '$1
echo 'CPU Shutdown Limit set to => '$2
echo ''
echo ''

sensors

echo ''
echo ''

str=$(sensors | grep "temp1:")
newstr=${str:15:2}

if [ ${newstr} -ge $1 ]
then
  echo '============================'                             >>/home/xxxx/Desktop/CPUWarning.Log
  echo $(date)                                                    >>/home/xxxx/Desktop/CPUWarning.Log
  echo ''                                                         >>/home/xxxx/Desktop/CPUWarning.Log
  echo ' WARNING: TEMPERATURE CORE' $i 'EXCEEDED' $1 '=>' $newstr >>/home/xxxx/Desktop/CPUWarning.Log
  echo ''                                                         >>/home/xxxx/Desktop/CPUWarning.Log
  echo '============================'                             >>/home/xxxx/Desktop/CPUWarning.Log
fi
  
if [ ${newstr} -ge $2 ]
then
  echo '============================'
  echo ''
  echo 'CRITICAL: TEMPERATURE CORE' $i 'EXCEEDED' $2 '=>' $newstr
  echo ''
  echo '============================'
  /sbin/shutdown -h now
  /usr/sbin/ssmtp me@myemail.com </home/xxx/MyScripts/hotcpu.txt
  echo 'Email Sent.....'
  exit
else
  echo ' Temperature temp1 OK at =>' $newstr
  echo ''
fi

echo 'CPU Core is within limits'
echo ''
I'm guessing the starting character position we need from this line:

Code: Select all

temp1:        +39.0°C  (high = +255.0°C, hyst = +251.0°C)
is 15. It's likely the forum has messed with the true column position. Basically, we're trying to pull out the 39 from +39.0°C counting from 0 to get the position, not from 1.

If it's not position 15 then change this line to suit. The "15:2" says extract 2 characters starting at position 15:

Code: Select all

newstr=${str:15:2}
Let me know how you get on :thumbup:

Ian.
User avatar
farrinux
Member
Member
Posts: 2
Joined: August 30th, 2012, 10:35 am
Location: Some where on earth!

Re: 12.04 Server setup & Temp Monitoring

Post by farrinux »

Ian:

The script worked great, thank you very much for the help! :clap:

Kevin :thumbup:

P.S. I have learned a great deal on this little project thanks to your website.
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