mirror of
https://github.com/larsen0815/check_rasp_temp.git
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111 lines
2.2 KiB
Bash
111 lines
2.2 KiB
Bash
#!/bin/bash
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# Adapted from check_nagios_latency
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# https://github.com/larsen0815/check_rasp_temp
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# Prints usage information
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usage() {
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if [ -n "$1" ] ; then
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echo "Error: $1" 1>&2
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fi
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echo ""
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echo "Usage: check_rasp_temp [-hl?] -w warning -c critical"
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echo ""
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echo " -w warning threshold"
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echo " -c critical threshold"
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echo " -l check for low temperatures"
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echo " -h, -? this help message"
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echo ""
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exit 3
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}
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# Checks if a given program is available and executable
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check_prog() {
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if [ -z "$PROG" ] ; then
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PROG=$(which $1)
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fi
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if [ -z "$PROG" ] ; then
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echo "TEMPERATURE UNKNOWN - cannot find $1"
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exit 3
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fi
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PROG=""
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}
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# Main
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check_prog vcgencmd
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check_prog awk
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check_prog bc
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# process command line options
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while getopts "hl?c:w:" opt; do
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case $opt in
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c ) CRITICAL=$OPTARG; ;;
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h | \? ) usage ; exit 3; ;;
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w ) WARNING=$OPTARG; ;;
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l ) LOW=true; ;;
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esac
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done
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shift $(($OPTIND - 1))
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# Check options
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if [ -z "${WARNING}" ] ; then
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usage "No warning threshold specified"
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fi
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if [ -z "${CRITICAL}" ] ; then
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usage "No critical threshold specified"
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fi
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# Check number formats
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if ! echo $WARNING | grep -qE '^[0-9]+(\.[0-9]+)?$' ; then
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echo "TEMPERATURE UNKOWN - Wrong number: $WARNING"
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exit 3
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fi
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if ! echo $CRITICAL | grep -qE '^[0-9]+(\.[0-9]+)?$' ; then
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echo "TEMPERATURE UNKOWN - Wrong number: $CRITICAL"
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exit 3
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fi
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# Perform the checks
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TEMP=$(sudo vcgencmd measure_temp | awk -F"=" '{print $2}' | awk -F"'" '{print $1}')
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PERF="temp=${TEMP};${WARNING};${CRITICAL};;"
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if [ "$LOW" == true ] ; then
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COMPARISON=$(echo "if($TEMP<=$CRITICAL) 1 else 0;" | bc)
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if [ $COMPARISON -eq 1 ] ; then
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echo "TEMPERATURE CRITICAL: $TEMP | $PERF"
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exit 2
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fi
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COMPARISON=$(echo "if($TEMP<=$WARNING) 1 else 0;" | bc)
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if [ $COMPARISON -eq 1 ] ; then
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echo "TEMPERATURE WARNING: $TEMP | $PERF"
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exit 1
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fi
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else
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COMPARISON=$(echo "if($TEMP>=$CRITICAL) 1 else 0;" | bc)
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if [ $COMPARISON -eq 1 ] ; then
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echo "TEMPERATURE CRITICAL: $TEMP | $PERF"
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exit 2
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fi
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COMPARISON=$(echo "if($TEMP>=$WARNING) 1 else 0;" | bc)
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if [ $COMPARISON -eq 1 ] ; then
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echo "TEMPERATURE WARNING: $TEMP | $PERF"
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exit 1
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fi
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fi
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echo "TEMPERATURE OK: $TEMP | $PERF"
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exit 0;
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