126 lines
3.3 KiB
Bash
126 lines
3.3 KiB
Bash
#!/bin/bash
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#
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#/
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#/ Usage:
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#/ check-load.sh --warning=<level> --critical=<level> --average=<level> --help
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#/
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#/ Checks the system load
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#/
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#/ Options:
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#/ -w, --warning=<level> The level of when to trigger a warning (level=loadavg/nproc)
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#/ -c, --critical=<level> The level of when to trigger a critical warning (level=loadavg/nproc)
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#/ -a, --average=<average> Which avarage to use for the load level (possible values are 1, 5 and 15)
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#/ -h, --help Display this help message
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#/
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#/ Exit Codes:
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#/ 0 Everything OK
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#/ 1 Warning level exceeded
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#/ 2 Critical level exceeded
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#/ 3 Unknown status
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#/
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Usage() {
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grep '^#/' "${script_dir}/${script_name}" | sed 's/^#\/\w*//'
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}
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GetOptions() {
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# https://stackoverflow.com/a/29754866
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OPTIONS=w:c:a:h
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LONGOPTS=warning:,critical:,avarage:,help
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# -use ! and PIPESTATUS to get exit code with errexit set
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# -temporarily store output to be able to check for errors
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# -activate quoting/enhanced mode (e.g. by writing out “--options”)
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# -pass arguments only via -- "$@" to separate them correctly
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! PARSED=$(getopt --options=$OPTIONS --longoptions=$LONGOPTS --name "$0" -- "$@")
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if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
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# e.g. return value is 1
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# then getopt has complained about wrong arguments to stdout
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Usage
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exit 2
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fi
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# read getopt's output this way to handle the quoting right:
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eval set -- "$PARSED"
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# now enjoy the options in order and nicely split until we see --
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while true; do
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case "$1" in
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-w|--warning)
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warn="$2"
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shift 2
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;;
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-c|--critital)
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crit="$2"
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shift 2
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;;
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-a|--average)
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if [[ ! " ${possibleavarages[*]} " =~ " ${2} " ]]; then
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echo "LOAD UNKNOWN - ${2} is not a valid load avarage"
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exit 3
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fi
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check="$2"
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shift 2
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;;
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-h|--help)
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Usage
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exit 0
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;;
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--)
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shift
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break
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;;
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*)
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echo "LOAD UNKNOWN - ${1} is not a valid parameter"
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exit 3
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;;
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esac
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done
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}
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warn=0.7
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crit=1
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check=5
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script_name=$(basename "${0}")
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script_dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
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possibleavarages=("1" "5" "15")
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GetOptions "$@"
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nproc=$(nproc)
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LOADVAL1=$(awk '{ print $1; }' < /proc/loadavg)
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LOADVAL5=$(awk '{ print $2; }' < /proc/loadavg)
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LOADVAL15=$(awk '{ print $3; }' < /proc/loadavg)
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checkval=${LOADVAL5}
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case "$check" in
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"1")
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checkval=${LOADVAL1}
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;;
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"5")
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checkval=${LOADVAL5}
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;;
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"15")
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checkval=${LOADVAL15}
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;;
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esac
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val=$(echo ${checkval}/${nproc} | bc -l)
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if (( $(echo "$val < ${warn}" | bc -l) )); then
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rval=0
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rmsg="OK"
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elif (( $(echo "$val < ${crit}" | bc -l) )); then
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rval=1
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rmsg="WARNING"
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else
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rval=2
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rmsg="CRITICAL"
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fi
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crit=${nproc}
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warn=$(echo ${nproc}\*${warn} | bc -l)
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min=0
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unit=""
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echo "LOAD ${rmsg} - ${LOADVAL1} ${LOADVAL5} ${LOADVAL15}|load1m=${LOADVAL1}${unit};$warn;$crit;$min load5m=${LOADVAL5}${unit};$warn;$crit;$min load15m=${LOADVAL15}${unit};$warn;$crit;$min"
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exit $rval
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