nagios插件监控cpu，可pnp画图-创新互联

check_cpu 是依据从exchange.nagios.org 的脚本修改的。使用原始脚本结构，函数名称、参数也没怎么变化，有看到的，勿拍砖。

#!/bin/bash

ST_OK=0

ST_WR=1

ST_CR=2

ST_UK=3

PROGNAME=`basename $0`

warning=$2

critical=$4

process=$6

get_wcdiff() {

  if [ ! -z "$warning" -a ! -z "$critical" ]

  then

    wclvls=1

    if [ ${warning} -gt ${critical} ]

    then

      wcdiff=1

    fi

  elif [ ! -z "$warning" -a -z "$critical" ]

  then

    wcdiff=2

  elif [ -z "$warning" -a ! -z "$critical" ]

  then

    wcdiff=3

  fi

}

val_wcdiff() {

  if [ "$wcdiff" = 1 ]

  then

    echo "Please adjust your warning/critical thresholds. The warning must be lower than the critical level!"

    exit $ST_UK

  elif [ "$wcdiff" = 2 ]

  then

    echo "Please also set a critical value when you want to use warning/critical thresholds!"

    exit $ST_UK

  elif [ "$wcdiff" = 3 ]

  then

    echo "Please also set a warning value when you want to use warning/critical thresholds!"

    exit $ST_UK

  fi

}

get_vals() {

  tmp_output=$(top -n 1 -b | grep $process )

  top_cpu=$(echo ${tmp_output} | awk '{print $9}')

  int_cpu=$(echo ${top_cpu%.*})

}

do_perfdata() {

perfdata="cpu=${top_cpu}%"

}

get_wcdiff

val_wcdiff

get_vals

do_perfdata

if [ -n "$warning" -a -n "$critical" ]

then

  if [ "$int_cpu" -ge "$warning" -a "$int_cpu" -lt "$critical" ]

  then

    echo "WARNING - ${perfdata} | ${perfdata}"

exit $ST_WR

  elif [ "$int_cpu" -ge "$critical" ]

  then

    echo "CRITICAL - ${perfdata} | ${perfdata}"

exit $ST_CR

  else

    echo "OK - ${perfdata} | ${perfdata} "

exit $ST_OK

  fi

else

  echo "Usage Example: $PROGNAME -w 3 -c 12 -p firefox "

  exit $ST_OK

fi

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