CPU使用率统计

cpu_cou.sh

#!/bin/bash
# 来自《构建高可用Linux服务器(第4版)》 714/6522
# Nagios return codes
STATE_OK=0
STATE_WARNING=1
STATE_CRITICAL=2
STATE_UNKNOWN=3
# Plugin parameters value if not define
LIST_WARNING_THRESHOLD="70"
LIST_CRITICAL_THRESHOLD="80"
INTERVAL_SEC=1
NUM_REPORT=1
CPU_REPORT=`iostat -c $INTERVAL_SEC $NUM_REPORT | sed -e 's/,/./ g' | tr -s ' ' ';' | sed '/^$/d' | tail -1`
CPU_REPORT_SECTIONS=`echo ${CPU_REPORT} | grep ';' -o | wc -l`
CPU_USER=`echo $CPU_REPORT | cut -d ";" -f 2`
#CPU_NICE=`echo $CPU_REPORT | cut -d ";" -f 3`
CPU_SYSTEM=`echo $CPU_REPORT | cut -d ";" -f 4`
# Add for integer shell issue
CPU_USER_MAJOR=`echo $CPU_USER | cut -d "." -f 1`
CPU_SYSTEM_MAJOR=`echo $CPU_SYSTEM | cut -d "." -f 1`
CPU_UTILI_COU=`echo ${CPU_USER} + ${CPU_SYSTEM}| bc`
CPU_UTILI_COUNTER=`echo $CPU_UTILI_COU | cut -d "." -f 1`
# Return
if [[ ${CPU_UTILI_COUNTER} -lt ${LIST_WARNING_THRESHOLD} ]]
then
    echo "OK - CPUCOU=${CPU_UTILI_COU}% | CPUCOU=${CPU_UTILI_COU}%; 80; 90" exit ${STATE_OK}
fi
if [[ ${CPU_UTILI_COUNTER} -gt ${LIST_WARNING_THRESHOLD} ]] && [[ ${CPU_UTILI_COUNTER} -lt ${LIST_CRITICAL_THRESHOLD} ]]
then
    echo "Warning - CPUCOU=${CPU_UTILI_COUNTER}% | CPUCOU=${CPU_UTILI_COUNTER}%; 80; 90" exit ${STATE_WARNING}
fi
if [[ ${CPU_UTILI_COUNTER} -gt ${LIST_CRITICAL_THRESHOLD} ]]
then
    echo "Critical - CPUCOU=${CPU_UTILI_COUNTER}% | CPUCOU=${CPU_UTILI_COUNTER} %;80; 90" exit ${STATE_CRITICAL}
fi