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Contents
#!/bin/bash
#
# Evaluate free system memory from Linux based systems.
#
# Date: 2007-11-12
# Author: Thomas Borger - ESG
# Date: 2012-04-02
# Modified: Norman Harman - norman.harman@mutualmobile.com
#
# The memory check is done with following command line:
# free -m | grep buffers/cache | awk '{ print $4 }'
# set lang
LANG=C
# get arguments
# #RED
while getopts 'w:c:hp' OPT; do
case $OPT in
w) WARN=$OPTARG;;
c) CRIT=$OPTARG;;
h) hlp="yes";;
p) perform="yes";;
*) unknown="yes";;
esac
done
# usage
HELP="
usage: $0 [ -w value -c value -p -h ]
-w --> Warning MB < value
-c --> Critical MB < value
-p --> print out performance data
-h --> print this help screen
"
if [ "$hlp" = "yes" ]; then
echo "$HELP"
exit 0
fi
if [ -z "$WARN" ] || [ -z "$CRIT" ]; then
echo "You must provide both warning and critical values"
exit 3
fi
set -o pipefail
FREE_MEMORY=$(free -m | grep buffers/cache | awk '{ print $4 }')
if [ $? -ne 0 ]; then
FREE_MEMORY=$(free -m | grep Mem | awk '{ print $7 }')
fi
if [ "$FREE_MEMORY" = "" ]; then
echo "MEM UNKNOWN -"
exit 3
fi
if [ "$perform" = "yes" ]; then
output="free system memory: $FREE_MEMORY MB | free memory="$FREE_MEMORY"MB;$WARN;$CRIT;0"
else
output="free system memory: $FREE_MEMORY MB"
fi
if (( $FREE_MEMORY <= $CRIT )); then
echo "MEM CRITICAL - $output"
exit 2
elif (( $FREE_MEMORY <= $WARN )); then
echo "MEM WARNING - $output"
exit 1
else
echo "MEM OK - $output"
exit 0
fi
Version data entries
10 entries across 10 versions & 1 rubygems