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Ludovic Cartier
68 lines
1.9 KiB
Bash
68 lines
1.9 KiB
Bash
#!/bin/bash
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# Nagios Exit Codes
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STATE_OK=0
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STATE_WARNING=1
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STATE_CRITICAL=2
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STATE_UNKNOWN=3
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# Default values (in percentage)
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warning=80
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critical=90
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# Retrieve arguments
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while getopts "d:w:c:" opt; do
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case $opt in
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d) disk=$OPTARG ;;
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w) warning=$OPTARG ;;
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c) critical=$OPTARG ;;
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*) echo "Usage: $0 -d <disk> -w <warning_limit> -c <critical_limit>"; exit $STATE_UNKNOWN ;;
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esac
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done
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# Check if disk is specified
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if [ -z "$disk" ]; then
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echo "ERROR: Device (e.g., /dev/nvme0) not specified."
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exit $STATE_UNKNOWN
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fi
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# Check if smartctl is installed
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if ! command -v smartctl &> /dev/null; then
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echo "ERROR: smartctl is not installed."
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exit $STATE_UNKNOWN
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fi
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# Retrieve SMART data (using sudo for permissions)
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SMART_DATA=$(sudo smartctl -A "$disk" 2>/dev/null)
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if [ $? -ne 0 ]; then
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echo "UNKNOWN - Unable to run smartctl on $disk (check sudo permissions)"
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exit $STATE_UNKNOWN
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fi
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# Parse the data
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USED=$(echo "$SMART_DATA" | grep "Percentage Used:" | awk '{print $3}' | tr -d '%')
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HW_WARNING=$(echo "$SMART_DATA" | grep "Critical Warning:" | awk '{print $3}')
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# Check if data was successfully parsed
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if [ -z "$USED" ] || [ -z "$HW_WARNING" ]; then
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echo "UNKNOWN - Could not parse SMART data for $disk"
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exit $STATE_UNKNOWN
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fi
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# Performance Data string for Nagios graphing
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PERFDATA="wear_out=${USED}%;${warning};${critical};0;100"
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# Evaluation Logic
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if [ "$HW_WARNING" != "0x00" ]; then
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echo "CRITICAL - Hardware Controller Alert on $disk (Code: $HW_WARNING) | $PERFDATA"
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exit $STATE_CRITICAL
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elif [ "$USED" -ge "$critical" ]; then
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echo "CRITICAL - Wear level is too high: ${USED}% (Threshold: ${critical}%) | $PERFDATA"
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exit $STATE_CRITICAL
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elif [ "$USED" -ge "$warning" ]; then
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echo "WARNING - Wear level is increasing: ${USED}% (Threshold: ${warning}%) | $PERFDATA"
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exit $STATE_WARNING
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else
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echo "OK - $disk healthy (Wear: ${USED}%) | $PERFDATA"
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exit $STATE_OK
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fi |