- #!/bin/bash
- #如果某些命令找不到,可以在此定义$PATH。
- ##################################################################################################################
- # 作用及使用方法:直接执行脚本,无需其它参数,使用iostat命令获得服务器CPU状态的值,并返回给Nagios及Nagios插件pnp #
- ##################################################################################################################
- # 状态定义
- STATE_OK=0
- STATE_WARNING=1
- STATE_CRITICAL=2
- STATE_UNKNOWN=3
- STATE_DEPENDENT=4
- # 将执行6次的结果写入文件
- touch /tmp/iostat.log
- iostat -c 1 6 >/tmp/iostat.log
- if [ $? -ne 0 ]
- then
- echo "Error : Can't find the command 'iostat' ."
- exit "$STATE_UNKNOWN"
- fi
- # 判断文件是否存在
- if [ ! -f /tmp/iostat.log ]
- then
- echo "Error : iostat.log not found ."
- exit "$STATE_UNKNOWN"
- fi
- # 赋值,取6次结果中的后5次的平均值
- float_user=`cat /tmp/iostat.log |grep -v % |grep -v ^$ |sed '1,2d' |awk '{a+=$1}END{printf "%.0f",a/5}'`
- float_system=`cat /tmp/iostat.log |grep -v % |grep -v ^$ |sed '1,2d' |awk '{a+=$3}END{printf "%.0f\\n",a/5}'`
- float_idle=`cat /tmp/iostat.log |grep -v % |grep -v ^$ |sed '1,2d' |awk '{a+=$6}END{printf "%.0f\\n",a/5}'`
- float_iowait=`cat /tmp/iostat.log |grep -v % |grep -v ^$ |sed '1,2d' |awk '{a+=$4}END{printf "%.0f\\n",a/5}'`
- # 删除iostat日志文件
- if [ -f /tmp/iostat.log ]
- then
- rm -f /tmp/iostat.log
- fi
- # 计算CPU使用率
- used_idle=`awk "BEGIN{print (100-$float_idle)}"`
- # 判断取到的值是否在正确范围
- if [ $used_idle -lt 0 -o $used_idle -gt 100 ]
- then
- echo "Error : used_idle out of the correct range ."
- exit "$STATE_UNKNOWN"
- fi
- # 定义报警阈值,这里为百分数,请不要添加‘%’
- critical=90
- warning=80
- # 定义报警输出
- stat_ok="OK"
- stat_warning="WARNING"
- stat_critical="CRITICAL"
- stat_unknown="UNKNOWN"
- stat_info="User=${float_user}% System=${float_system}% Iowait=${float_iowait}% Idle=${float_idle}% | CPU_Used=${used_idle}%"
- # 判断并返回相应的值
- if [ ${used_idle} -lt $warning ]
- then
- echo "${stat_ok} : ${stat_info}"
- exit "$STATE_OK"
- elif [ ${used_idle} -ge $warning -a ${used_idle} -lt $critical ]
- then
- echo "${stat_warning} : ${stat_info}"
- exit "$STATE_WARNING"
- elif [ ${used_idle} -ge $critical ]
- then
- echo "${stat_critical} : ${stat_info}"
- exit "$STATE_CRITICAL"
- else
- echo "${stat_unknown} : ${stat_info}"
- exit "$STATE_UNKNOWN"
- fi
- #该片段来自于http://www.codesnippet.cn/detail/150720134586.html
来源: http://www.codesnippet.cn/detail/150720134586.html