63 lines
1.8 KiB
Bash
63 lines
1.8 KiB
Bash
#!/bin/bash
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# Usage: "Linux - CPU usage monitor.sh 75 95"
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#
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# Description:
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# This script is used from inside of Tactical RMM instances to check the CPU usage.
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# This script should be deployed as a check script.
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#
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# Options:
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# Arg1 - Warning limit
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# Arg2 - Error limit
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#
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# Author: D. de Kooker (info@dcomputers.nl)
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# Sources: https://www.activexperts.com/support/network-monitor/online/linux/
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# Changelog :
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# 27-06-2022 - Initial script from source, tweaked for my environment
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#region Parameters, functions and global variables
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nWarnCpuUsage=$1
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nMaxCpuUsage=$2
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#endregion
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# Validate number of arguments
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if [ $# -ne 2 ] ; then
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echo "UNCERTAIN: Invalid number of arguments - Usage: cpu nWarnCpuUsage nMaxCpuUsage"
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exit 1
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fi
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# Validate numeric parameter nWarnCpuUsage
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regExpNumber='^[0-9]+$'
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if ! [[ $1 =~ $regExpNumber ]] ; then
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echo "UNCERTAIN: Invalid argument: nWarnCpuUsage (number expected)"
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exit 1
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fi
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# Validate numeric parameter nMaxCpuUsage
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regExpNumber='^[0-9]+$'
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if ! [[ $1 =~ $regExpNumber ]] ; then
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echo "UNCERTAIN: Invalid argument: nMaxCpuUsage (number expected)"
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exit 1
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fi
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# Check the CPU usage
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nCpuLoadPercentage=`ps -A -o pcpu | tail -n+2 | paste -sd+ | bc`
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nCpuLoadPercentage=$( echo "$nCpuLoadPercentage / 1" | bc )
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if [ $nCpuLoadPercentage -le $nWarnCpuUsage ] ; then
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echo "SUCCESS: CPU usage is [$nCpuLoadPercentage%]"
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echo ""
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echo "Warning limit=[$1%], Error limit=[$2%]"
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exit 0
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fi
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if [ $nCpuLoadPercentage -gt $nWarnCpuUsage -a $nCpuLoadPercentage -le $nMaxCpuUsage ] ; then
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echo "WARNING: CPU usage is [$nCpuLoadPercentage%]"
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echo ""
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echo "Warning limit=[$1%], Error limit=[$2%]"
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exit 2
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fi
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if [ $nCpuLoadPercentage -gt $nMaxCpuUsage ] ; then
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echo "ERROR: CPU usage is [$nCpuLoadPercentage%]"
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echo ""
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echo "Warning limit=[$1%], Error limit=[$2%]"
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exit 1
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fi |