Shell脚本编写Nagios插件监控程序资源占用

2019-09-23 09:32:06于海丽

case $3 in
 --cpu)
   cpu_crit=$4
  ;;
 --mem)
   mem_crit=$4
  ;;
esac
 
 
 
###判断传参数量,如果不为4,则var值为1,var0则正常####
if [[ $1 == $3  ]];then
       var=1  
elif [ $# -ne 4 ] ;then
       var=1
else
       var=0
fi
 
 
###打印错误提示信息
if [ $var -eq 1 ];then
   echo "Usage parament:"
   echo "    $0 [--cpu][--mem]"
   echo ""
   echo "Example:"
   echo "    $0 --cpu 50 --mem50"
   exit
fi
 
 
###把不存在的进程放一变量中
num=$(( ${#pragrom_list[@]}-1 ))
 
NotExist=""
for digit in `seq 0 $num`
do
 a=`ps -ef|grep -v grep |grep ${pragrom_list[$digit]}|wc -l`
  if[ $a -eq 0 ];then
    NotExist="$NotExist ${pragrom_list[$digit]}"
    unset pragrom_list[$digit]
  fi
done
#echo"pragrom_list=${pragrom_list[@]}"
 
 
 
####对比进程所占资源与阈值大小
cpu_use_all=""
mem_use_all=""
compare_cpu_temp=0
compare_mem_temp=0
for n in ${pragrom_list[@]}
do
  cpu_use=`top -b -n1|grep $n|awk '{print $9}'`
  mem_use=`top -b -n1|grep $n|awk '{print $10}'`
   if[[ $cpu_use == "" ]];then
       cpu_use=0
   fi
   if[[ $mem_use == "" ]];then
       mem_use=0
   fi
 
  compare_cpu=`echo "$cpu_use > $cpu_crit"|bc`
  compare_mem=`echo "$mem_use > $mem_crit"|bc` 
   if[[ $compare_cpu == 1  ]];then
       compare_cpu_temp=1
   fi
   if[[ $compare_mem == 1  ]];then
       compare_mem_temp=1
   fi
 
  cpu_use_all="${n}_cpu_use=${cpu_use}% ${cpu_use_all}"
  mem_use_all="${n}_mem_use=${mem_use}% ${mem_use_all}"
done
 
 
###如果该变量有值,则代表有进程down。则退出值为2
if [[ "$NotExist" != ""]];then
 echo -e "Current ${NotExist} isdown.$cpu_use_all;$mem_use_all"
 exit 2
###如果cpu比较值为1,则代表有进程占用超过阈值,则退出值为2
elif [[ "$compare_cpu_temp" == 1]];then
   echo -e "$cpu_use_all;$mem_use_all"
   exit 2
 
##如果mem比较值为1,则代表为进程mem占用超过阈值,则退出值为2