Monitoring CPUs temperature instead of inlet temperature

Dockerfile

@@ -26,6 +26,6 @@ ENV IDRAC_HOST local
 #ENV IDRAC_USER root
 #ENV IDRAC_PASSWORD calvin
 ENV FAN_SPEED 5
-ENV MAXIMUM_TEMPERATURE 32
+ENV CPU_TEMPERATURE_TRESHOLD 50
 
 CMD /startup.sh && /opt/check_temp.sh && cron && tail -f /var/log/cron.log

README.md

@@ -4,7 +4,7 @@
 - `IDRAC_USERNAME` parameter is only necessary if you're adressing a distant iDRAC. Default value is "root".
 - `IDRAC_PASSWORD` parameter is only necessary if you're adressing a distant iDRAC. Default value is "calvin".
 - `FAN_SPEED` parameter can be set as a decimal (from 0 to 100%) or hexadecimal value (from 0x00 to 0x64) you want to set the fans to. Default value is 5(%).
-- `MAXIMUM_TEMPERATURE` parameter is the threshold beyond which the Dell fan mode defined in your BIOS will become active again (to protect the server hardware against overheat). Default value is 32(°C).
+- `CPU_TEMPERATURE_TRESHOLD` parameter is the T°junction (junction temperature) threshold beyond which the Dell fan mode defined in your BIOS will become active again (to protect the server hardware against overheat). Default value is 50(°C).
 
 To use:
 
@@ -15,7 +15,7 @@ docker run -d \
   --name Dell_iDRAC_fan_controller \
   --restart unless-stopped \
   -e FAN_SPEED=<dec or hex fan speed> \
-  -e MAXIMUM_TEMPERATURE=<dec temp treshold> \
+  -e CPU_TEMPERATURE_TRESHOLD=<dec temp treshold> \
   alombardo4/idrac-fan-control:latest
 ```
 
@@ -29,7 +29,7 @@ docker run -d \
   -e IDRAC_USERNAME=<iDRAC username> \
   -e IDRAC_PASSWORD=<iDRAC password> \
   -e FAN_SPEED=<dec or hex fan speed> \
-  -e MAXIMUM_TEMPERATURE=<dec temp treshold> \
+  -e CPU_TEMPERATURE_TRESHOLD=<dec temp treshold> \
   alombardo4/idrac-fan-control:latest
 ```
 
@@ -48,7 +48,7 @@ services:
     environment:
       - IDRAC_HOST=local # can be omitted as it is the default value
       - FAN_SPEED=0x05 # set to the decimal or hexadecimal value you want to set the fans to (from 0 to 100%)
-      - MAXIMUM_TEMPERATURE=<dec temp treshold>
+      - CPU_TEMPERATURE_TRESHOLD=<dec temp treshold>
     devices:
       - /dev/ipmi0:/dev/ipmi0
 ```
@@ -68,5 +68,5 @@ services:
       - IDRAC_USERNAME=root # set to your IPMI username
       - IDRAC_PASSWORD=calvin # set to your IPMI password
       - FAN_SPEED=0x05 # set to the decimal or hexadecimal value you want to set the fans to (from 0 to 100%)
-      - MAXIMUM_TEMPERATURE=<dec temp treshold>
+      - CPU_TEMPERATURE_TRESHOLD=<dec temp treshold>
 ```

check_temp.sh

@@ -5,7 +5,8 @@ IPMI_USERNAME=`cat /idrac_username.txt`
 IPMI_PASSWORD=`cat /idrac_password.txt`
 DECIMAL_FAN_SPEED=`cat /decimal_fan_speed.txt`
 HEXADECIMAL_FAN_SPEED=`cat /hexadecimal_fan_speed.txt`
-MAXIMUM_INLET_TEMPERATURE=`cat /maximum_inlet_temperature.txt`
+CPU_TEMPERATURE_TRESHOLD=`cat /cpu_temperature_treshold.txt`
+readonly DELL_FRESH_AIR_COMPLIANCE=45
 
 if [[ $IPMI_HOST == "local" ]]
 then
@@ -14,20 +15,42 @@ else
   LOGIN_STRING="lanplus -H $IPMI_HOST -U $IPMI_USERNAME -P $IPMI_PASSWORD"
 fi
 
-INLET_TEMPERATURE=$(ipmitool -I $LOGIN_STRING sdr type temperature |grep Inlet |grep degrees |grep -Po '\d{2}' | tail -1)
+DATA=$(ipmitool -I $LOGIN_STRING sdr type temperature | grep degrees)
+INLET_TEMPERATURE=$(echo "$DATA" | grep Inlet | grep -Po '\d{2}' | tail -1)
+EXHAUST_TEMPERATURE=$(echo "$DATA" | grep Exhaust | grep -Po '\d{2}' | tail -1)
+CPU_DATA=$(echo "$DATA" | grep "3\." | grep -Po '\d{2}')
+CPU1_TEMPERATURE=$(echo $CPU_DATA | awk '{print $1;}')
+CPU2_TEMPERATURE=$(echo $CPU_DATA | awk '{print $2;}')
 
 RED='\033[0;31m'
 GREEN='\033[0;32m'
 NC='\033[0m' # No Color
 
 echo "------------------------------------"
-echo "Current inlet temperature is $INLET_TEMPERATURE °C."
+echo "Current"
-if [ $INLET_TEMPERATURE -gt $MAXIMUM_INLET_TEMPERATURE ]
+echo "- inlet temperature is $INLET_TEMPERATURE°C"
+echo "- CPU 1 temperature is $CPU1_TEMPERATURE°C"
+echo "- CPU 2 temperature is $CPU2_TEMPERATURE°C"
+echo "- Exhaust temperature is $EXHAUST_TEMPERATURE°C"
+
+CPU1_OVERHEAT () { [ $CPU1_TEMPERATURE -gt $CPU_TEMPERATURE_TRESHOLD ]; }
+CPU2_OVERHEAT () { [ $CPU2_TEMPERATURE -gt $CPU_TEMPERATURE_TRESHOLD ]; }
+
+if CPU1_OVERHEAT
 then
-  printf "Inlet temperature is ${RED}too high${NC}. Activating default dynamic fan control."
+  if CPU2_OVERHEAT
+  then
+    printf "CPU 1 and CPU 2 temperatures are ${RED}too high${NC}. Activating default dynamic fan control."
+  else
+    printf "CPU 1 temperature is ${RED}too high${NC}. Activating default dynamic fan control."
+  fi
+  ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x01 0x01
+elif CPU2_OVERHEAT
+then
+  printf "CPU 2 temperature is ${RED}too high${NC}. Activating default dynamic fan control."
   ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x01 0x01
 else
-  printf "Inlet temperature is ${GREEN}OK${NC}. Using manual fan control with ${DECIMAL_FAN_SPEED}%% fan speed."
+  printf "CPUs temperatures are ${GREEN}OK${NC}. Using manual fan control with ${DECIMAL_FAN_SPEED}%% fan speed."
   ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x01 0x00
   ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x02 0xff $HEXADECIMAL_FAN_SPEED
 fi

startup.sh

@@ -15,7 +15,7 @@ fi
 
 echo $DECIMAL_FAN_SPEED >> /decimal_fan_speed.txt
 echo $HEXADECIMAL_FAN_SPEED >> /hexadecimal_fan_speed.txt
-echo $MAXIMUM_TEMPERATURE >> /maximum_inlet_temperature.txt
+echo $CPU_TEMPERATURE_TRESHOLD >> /cpu_temperature_treshold.txt
 
 echo "Idrac/IPMI host: `cat /idrac_host.txt`"
 if [[ $IDRAC_HOST != "local" ]]
@@ -24,4 +24,4 @@ then
   echo "Idrac/IPMI password: `cat /idrac_password.txt`"
 fi
 echo "Fan speed objective: `cat /decimal_fan_speed.txt`%"
-echo "Maximum inlet temperature: `cat /maximum_inlet_temperature.txt`°C"
+echo "CPU temperature treshold: `cat /cpu_temperature_treshold.txt`°C"