#!/bin/bash
STAT_OK=0
STAT_WARNING=1
STAT_CRITICAL=2
STAT_UNKNOWN=3
total_mem=`free -m |awk 'NR==2{print $2}'`
used_mem=`free -m |awk 'NR==3{print $3}'` #取的是系统真正用掉的内存
free_mem=`free -m |awk 'NR==3{print $4}'` #取的是free+cache的内存
use_per=`echo "scale=2;$used_mem/$total_mem"|bc|sed 's/^.//g'`
help() {
echo "USAGE:`basename $0` [-w] [-c] [-h]"
exit -1
}
while getopts ":w:c:h" opt
do
case $opt in
w) warning=$OPTARG
;;
c) critical=$OPTARG
;;
h) help
;;
?) unkown=$OPTARG
echo "error,plase check for help,USAGE:./`basename $0` -h"
exit $STAT_UNKNOWN
;;
esac
done
if [ $use_per -lt $warning ]
then
echo "OK - total:$total_mem MB,used:$used_mem MB,free:$free_mem MB | total_mem=$total_mem used_mem=$used_mem free_mem=$free_mem"
exit $STAT_OK
elif [ $use_per -ge $warning ] && [ $use_per -lt $critical ]
then
echo "WARNING - total:$total_mem MB,used:$used_mem MB,free:$free_mem MB | total_mem=$total_mem used_mem=$used_mem free_mem=$free_mem"
exit $STAT_WARNING
else
echo "CRITICAL - total:$total_mem MB,used:$used_mem MB,free:$free_mem MB | total_mem=$total_mem used_mem=$used_mem free_mem=$free_mem"
exit $STAT_CRITICAL
fi
fi
STAT_OK=0
STAT_WARNING=1
STAT_CRITICAL=2
STAT_UNKNOWN=3
total_mem=`free -m |awk 'NR==2{print $2}'`
used_mem=`free -m |awk 'NR==3{print $3}'` #取的是系统真正用掉的内存
free_mem=`free -m |awk 'NR==3{print $4}'` #取的是free+cache的内存
use_per=`echo "scale=2;$used_mem/$total_mem"|bc|sed 's/^.//g'`
help() {
echo "USAGE:`basename $0` [-w] [-c] [-h]"
exit -1
}
while getopts ":w:c:h" opt
do
case $opt in
w) warning=$OPTARG
;;
c) critical=$OPTARG
;;
h) help
;;
?) unkown=$OPTARG
echo "error,plase check for help,USAGE:./`basename $0` -h"
exit $STAT_UNKNOWN
;;
esac
done
if [ $use_per -lt $warning ]
then
echo "OK - total:$total_mem MB,used:$used_mem MB,free:$free_mem MB | total_mem=$total_mem used_mem=$used_mem free_mem=$free_mem"
exit $STAT_OK
elif [ $use_per -ge $warning ] && [ $use_per -lt $critical ]
then
echo "WARNING - total:$total_mem MB,used:$used_mem MB,free:$free_mem MB | total_mem=$total_mem used_mem=$used_mem free_mem=$free_mem"
exit $STAT_WARNING
else
echo "CRITICAL - total:$total_mem MB,used:$used_mem MB,free:$free_mem MB | total_mem=$total_mem used_mem=$used_mem free_mem=$free_mem"
exit $STAT_CRITICAL
fi
fi
编辑回复