checkTemp.sh

#!/bin/sh
#############################################################################
# Check the CPU and HDD temperatures, and send e-mail
# if desired limits are exceeded
#
# Author: miGi from NAS4Free Forum
#
# Usage: checkTemp.sh thresholdCPU thresholdHDD
#
#    thresholdCPU : Warning temperature threshold to the CPU (in deg celsius)
#    thresholdHDD : Warning temperature threshold to the HDD (in deg celsius)
#############################################################################

# Initialization of the script name
readonly SCRIPT_NAME=`basename $0`  # The name of this file

# set script path as working directory
cd "`dirname $0`"

# Import required scripts
. "config.sh"
. "common/commonLogFcts.sh"
. "common/commonMailFcts.sh"
. "common/commonLockFcts.sh"

# Initialization of the constants
readonly START_TIMESTAMP=`$BIN_DATE +"%s"`
readonly LOGFILE="$CFG_LOG_FOLDER/$SCRIPT_NAME.log"
readonly TMPFILE_ARGS="$CFG_TMP_FOLDER/$SCRIPT_NAME.$$.args.tmp"

# Set variables corresponding to the input parameters
ARGUMENTS="$@"



##################################
# Check script input parameters
#
# Params: all parameters of the shell script
# return : 1 if an error occured, 0 otherwise
##################################
parseInputParams() {
    local opt regex_temp

    # parse the optional parameters
    # (there should be none)
    while getopts ":" opt; do
        case $opt in
            \?)
                echo "Invalid option: -$OPTARG"
                return 1 ;;
        esac
    done

    # Remove the optional arguments parsed above.
    shift $((OPTIND-1))

    # Check if the number of mandatory parameters
    # provided is as expected
    if [ "$#" -ne "2" ]; then
        echo "$LOGFILE" "Exactly two mandatory argument shall be provided"
        return 1
    fi

    # Set variables corresponding to the input parameters
    I_WARN_THRESHOLD_CPU="$1"
    I_WARN_THRESHOLD_HDD="$2"

    regex_temp="([0-9]+)"

    if ! echo "$I_WARN_THRESHOLD_CPU" | grep -E "^$regex_temp$" >/dev/null; then
        echo "$LOGFILE" "Wrong CPU temperature notification threshold definition !"
        return 1
    fi

    if ! echo "$I_WARN_THRESHOLD_HDD" | grep -E "^$regex_temp$" >/dev/null; then
        echo "$LOGFILE" "Wrong HDD temperature notification threshold definition !"
        return 1
    fi

    return 0
}


##################################
# Main
##################################
main() {
    returnCode=0

    log_info "$LOGFILE" "Starting checking temperatures..."

    log_info "$LOGFILE" "CPUs (warning threshold: $((I_WARN_THRESHOLD_CPU))C):"
    printf '%8s %s\n' "Temp(C)" "CPU" | log_info "$LOGFILE"
    for cpu in `sysctl -a | grep -E "cpu\.[0-9]+\.temp" | cut -f1 -d:`; do
        cpuTemp=`sysctl -a | grep $cpu | awk '{gsub(/[.][0-9]*C/,"");print $2}'`

        printf '%+8d %s\n' "$((cpuTemp))" "$cpu" | log_info "$LOGFILE"

        if [ "$((cpuTemp))" -ge "$I_WARN_THRESHOLD_CPU" ] ; then
            log_warning "$LOGFILE" "CPU notification threshold reached !"
            returnCode=1
        fi
    done

    log_info "$LOGFILE" "HDDs (warning threshold: $((I_WARN_THRESHOLD_HDD))C):"
    printf '%8s %-6s %-25s %s\n' "Temp(C)" "dev" "P/N" "S/N" | log_info "$LOGFILE"
    for hdd in $(sysctl -n kern.disks); do
        devTemp=`$BIN_SMARTCTL -a /dev/$hdd | grep "Temperature_Celsius" | awk '{print $10}'`
        devSerNum=`$BIN_SMARTCTL -a /dev/$hdd | grep "^Serial Number:" | sed 's/^Serial Number:[ \t]*\(.*\)[ \t]*$/\1/g'`
        devName=`$BIN_SMARTCTL -a /dev/$hdd | grep "^Device Model:" | sed 's/^Device Model:[ \t]*\(.*\)[ \t]*$/\1/g'`

        printf '%+8d %-6s %-25s %s\n' "$((devTemp))" "$hdd" "$devName" "$devSerNum" \
            | log_info "$LOGFILE"

        if [ "$((devTemp))" -ge "$I_WARN_THRESHOLD_HDD" ] ; then
            log_warning "$LOGFILE" "HDD notification threshold reached !"
            returnCode=1
        fi
    done

    return $returnCode
}



# Parse and validate the input parameters
if ! parseInputParams $ARGUMENTS > "$TMPFILE_ARGS"; then
    log_info "$LOGFILE" "-------------------------------------"
    cat "$TMPFILE_ARGS" | log_error "$LOGFILE"
    get_log_entries_ts "$LOGFILE" "$START_TIMESTAMP" | sendMail "$SCRIPT_NAME : Invalid arguments"
else
    log_info "$LOGFILE" "-------------------------------------"
    cat "$TMPFILE_ARGS" | log_info "$LOGFILE"

    # run script if possible (lock not existing)
    run_main "$LOGFILE" "$SCRIPT_NAME"
    # in case of error, send mail with extract of log file
    [ "$?" -eq "2" ] && get_log_entries_ts "$LOGFILE" "$START_TIMESTAMP" | sendMail "$SCRIPT_NAME : issue occured during execution"
fi

$BIN_RM "$TMPFILE_ARGS"
exit 0