Plotting CPU Temperature on MRTG graph
From WBITT's Cooker!
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lm_sensors package must be installed and the service running:
[root@www mrtg]# rpm -q lm_sensors lm_sensors-2.10.7-9.el5 [root@www mrtg]# service lm_sensors restart chkconfig --level 35 lm_sensors on
Detect Sensors (one time activity):
[root@www mrtg]# sensors-detect
Answer the questions with YES, when asked by sensors-detect command. Next, issue "sensors -s" command. After that you can issue the "sensors" command and view the output.
[root@www mrtg]# sensors -s
[root@www mrtg]# sensors
w83793-i2c-0-2f
Adapter: SMBus I801 adapter at 1100
VCoreA: +1.32 V (min = +0.92 V, max = +1.38 V)
VCoreB: +1.26 V (min = +0.00 V, max = +2.05 V)
Vtt: +1.21 V (min = +1.08 V, max = +1.33 V)
in3: +0.54 V (min = +0.40 V, max = +0.67 V)
in4: +1.82 V (min = +1.62 V, max = +1.98 V)
+3.3V: +3.23 V (min = +2.96 V, max = +3.63 V)
+12V: +12.10 V (min = +10.75 V, max = +13.25 V)
+5V: +5.05 V (min = +4.64 V, max = +5.65 V)
5VSB: +5.05 V (min = +4.64 V, max = +5.65 V)
VBAT: +3.25 V (min = +2.96 V, max = +3.63 V)
fan1: 0 RPM (min = 712 RPM) ALARM
fan2: 0 RPM (min = 712 RPM) ALARM
fan3: 0 RPM (min = 712 RPM) ALARM
fan4: 0 RPM (min = 712 RPM) ALARM
fan5: 3040 RPM (min = 712 RPM)
fan6: 0 RPM (min = 712 RPM) ALARM
fan7: 2160 RPM (min = 712 RPM)
fan8: 0 RPM (min = 712 RPM) ALARM
fan9: 0 RPM (min = 712 RPM) ALARM
fan10: 0 RPM (min = 712 RPM) ALARM
CPU1 Temp: +26.0°C (high = +75.0°C, hyst = +70.0°C)
CPU2 Temp:-117.5°C (high = +75.0°C, hyst = +70.0°C)
temp3: -119.0°C (high = +75.0°C, hyst = +70.0°C)
temp4: -128.0°C (high = +75.0°C, hyst = +70.0°C)
temp5: +41°C (high = +50°C, hyst = +45°C)
w83627hf-isa-0290
Adapter: ISA adapter
VCore 1: +0.24 V (min = +1.09 V, max = +1.50 V) ALARM
VCore 2: +0.24 V (min = +1.09 V, max = +1.50 V) ALARM
+3.3V: +0.24 V (min = +2.82 V, max = +3.79 V) ALARM
+5V: +4.97 V (min = +6.85 V, max = +4.97 V) ALARM
+12V: +0.91 V (min = +15.02 V, max = +11.13 V) ALARM
-12V: -13.68 V (min = -3.48 V, max = +3.10 V) ALARM
-5V: -6.96 V (min = +5.10 V, max = +3.69 V) ALARM
V5SB: +5.48 V (min = +6.83 V, max = +4.97 V) ALARM
VBat: +3.23 V (min = +3.94 V, max = +2.46 V) ALARM
fan1: 0 RPM (min = 0 RPM, div = 2)
fan2: 0 RPM (min = 2689 RPM, div = 2) ALARM
fan3: 0 RPM (min = 4470 RPM, div = 2) ALARM
temp1: +122°C (high = -1°C, hyst = -73°C) sensor = thermistor ALARM
temp2: +122.0°C (high = +80°C, hyst = +75°C) sensor = thermistor ALARM
temp3: +122.0°C (high = +80°C, hyst = +75°C) sensor = thermistor ALARM
vid: +1.519 V (VRM Version 11.0)
alarms: Chassis intrusion detection ALARM
beep_enable:
Sound alarm enabled
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +23°C (high = +85°C)
coretemp-isa-0001
Adapter: ISA adapter
Core 1: +30°C (high = +85°C)
[root@www mrtg]#
Create the following script:
[root@www mrtg]# cat /usr/local/bin/sensors-mrtg.sh
#!/bin/bash
SENSORS=/usr/bin/sensors
UPTIME=$(uptime | awk -F, '{print $1}' )
TEXT="CPU Temperature"
CPU1TEMP=$( ${SENSORS} | grep "CPU1 Temp" | awk '{print int($3)}' )
# http://people.ee.ethz.ch/~oetiker/webtools/mrtg/reference.html
# "The external command must return 4 lines of output:
# Line 1
# current state of the first variable, normally 'incoming bytes count'
# Line 2
# current state of the second variable, normally 'outgoing bytes count'
# Line 3
# string (in any human readable format), telling the uptime of the target.
# Line 4
# string, telling the name of the target. "
echo ${CPU1TEMP}
echo ${CPU1TEMP}
echo ${UPTIME}
echo ${TEXT}
[root@www mrtg]#
Add the following code to your MRTG config file:
Target[CPUTemperature]: `/usr/local/bin/sensors-mrtg.sh` Options[CPUTemperature]: nopercent,growright,unknaszero,gauge MaxBytes[CPUTemperature]: 75 AbsMax[CPUTemperature]: 100 Unscaled[CPUTemperature]: dwmy Title[CPUTemperature]: CPU Temperature PageTop[CPUTemperature]: <H1>CPU Temperature</H1> ShortLegend[CPUTemperature]: Celcius YLegend[CPUTemperature]: Celcius
