125 lines
3.3 KiB
Bash
Executable File
125 lines
3.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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#Set script name
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SCRIPT=`basename ${BASH_SOURCE[0]}`
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#Set default values
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optMW=95
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optMC=98
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optSW=95
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optSC=98
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# help function
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function printHelp {
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echo -e \\n"Help for $SCRIPT"\\n
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echo -e "Basic usage: $SCRIPT -w {warning} -c {critical} -W {warning} -C {critical}"\\n
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echo "Command switches are optional, default values for warning is 95% and critical is 98%"
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echo "-w - Sets warning value for Memory Usage. Default is 95%"
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echo "-c - Sets critical value for Memory Usage. Default is 98%"
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echo "-W - Sets warning value for Swap Usage. Default is 95%"
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echo "-C - Sets critical value for Swap Usage. Default is 98%"
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echo -e "-h - Displays this help message"\\n
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echo -e "Example: $SCRIPT -w 80 -c 90 -W 40 -C 60"\\n
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echo -e \\n\\n"Author: Lukasz Gogolin, lukasz.gogolin@gmail.com"
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echo -e "Git: http://bitbucket.org/lgogolin/nagios_plugins"
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exit 1
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}
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# regex to check is OPTARG an integer
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re='^[0-9]+$'
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while getopts :w:c:W:C:h FLAG; do
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case $FLAG in
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w)
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if ! [[ $OPTARG =~ $re ]] ; then
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echo "error: Not a number" >&2; exit 1
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else
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optMW=$OPTARG
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fi
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;;
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c)
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if ! [[ $OPTARG =~ $re ]] ; then
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echo "error: Not a number" >&2; exit 1
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else
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optMC=$OPTARG
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fi
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;;
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W)
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if ! [[ $OPTARG =~ $re ]] ; then
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echo "error: Not a number" >&2; exit 1
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else
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optSW=$OPTARG
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fi
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;;
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C)
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if ! [[ $OPTARG =~ $re ]] ; then
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echo "error: Not a number" >&2; exit 1
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else
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optSC=$OPTARG
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fi
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;;
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h)
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printHelp
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;;
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\?)
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echo -e \\n"Option - $OPTARG not allowed."
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printHelp
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exit 2
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;;
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esac
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done
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shift $((OPTIND-1))
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array=( $(cat /proc/meminfo | egrep 'MemTotal|MemFree|Buffers|Cached|SwapTotal|SwapFree' |awk '{print $1 " " $2}' |tr '\n' ' ' |tr -d ':' |awk '{ printf("%i %i %i %i %i %i %i", $2, $4, $6, $8, $10, $12, $14) }') )
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memTotal_k=${array[0]}
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memTotal_b=$(($memTotal_k*1024))
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memFree_k=${array[1]}
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memFree_b=$(($memFree_k*1024))
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memBuffer_k=${array[2]}
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memBuffer_b=$(($memBuffer_k*1024))
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memCache_k=${array[3]}
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memCache_b=$(($memCache_k*1024))
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memTotal_m=$(($memTotal_k/1024))
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memFree_m=$(($memFree_k/1024))
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memBuffer_m=$(($memBuffer_k/1024))
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memCache_m=$(($memCache_k/1024))
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memUsed_b=$(($memTotal_b-$memFree_b-$memBuffer_b-$memCache_b))
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memUsed_m=$(($memTotal_m-$memFree_m-$memBuffer_m-$memCache_m))
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memUsedPrc=$((($memUsed_b*100)/$memTotal_b))
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swapTotal_k=${array[5]}
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swapTotal_b=$(($swapTotal_k*1024))
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swapFree_k=${array[6]}
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swapFree_b=$(($swapFree_k*1024))
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swapUsed_k=$(($swapTotal_k-$swapFree_k))
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swapUsed_b=$(($swapUsed_k*1024))
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swapTotal_m=$(($swapTotal_k/1024))
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swapFree_m=$(($swapFree_k/1024))
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swapUsed_m=$(($swapTotal_m-$swapFree_m))
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if [ $swapTotal_k -eq 0 ]; then
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swapUsedPrc=0
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else
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swapUsedPrc=$((($swapUsed_k*100)/$swapTotal_k))
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fi
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message="[MEMORY] Total: $memTotal_m MB - Used: $memUsed_m MB - $memUsedPrc% [SWAP] Total: $swapTotal_m MB - Used: $swapUsed_m MB - $swapUsedPrc% | MTOTAL=$memTotal_b;;;; MUSED=$memUsed_b;;;; MCACHE=$memCache_b;;;; MBUFFER=$memBuffer_b;;;; STOTAL=$swapTotal_b;;;; SUSED=$swapUsed_b;;;;"
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if [ $memUsedPrc -ge $optMC ] || [ $swapUsedPrc -ge $optSC ]; then
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echo -e $message
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$(exit 2)
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elif [ $memUsedPrc -ge $optMW ] || [ $swapUsedPrc -ge $optSW ]; then
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echo -e $message
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$(exit 1)
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else
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echo -e $message
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$(exit 0)
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fi
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