#!/bin/bash

# Loop through all hard drives and read their temperatures
for DEVICE in /dev/sd[a-z]; do
  # Check if the device is a disk (not a partition)
  if [ -b "$DEVICE" ]; then
    # Get the temperature from smartctl
    TEMPERATURE=$(/usr/sbin/smartctl -A $DEVICE | grep "Temperature_Celsius" | awk '{print $10}')

    # If the temperature is not empty, push it to Ganglia using gmetric
    if [ -n "$TEMPERATURE" ]; then
      gmetric --name ${DEVICE##*/}_temp --value $TEMPERATURE --type float --units C --group=sensors
    fi
  fi
done