Nagios监控memcached状态的shell脚本

一、 check_memcache脚本

#!/bin/bash

# echo "Usage:$0  -w num1 -c num2"
#fi

#DATE=`date +%Y-%m-%d`
response=`/usr/local/nagios/libexec/check_tcp -H localhost -p 11211 -E -s 'statsrnquitrn' |awk '{print $4}'`

connections=`/usr/local/nagios/libexec/check_tcp -H localhost -p 11211 -E -s 'statsrnquitrn' -e 'uptime' |grep curr_connections | awk '{print $3}'`

cmd_get=`/usr/local/nagios/libexec/check_tcp -H localhost -p 11211 -E -s 'statsrnquitrn' -e 'uptime' |grep cmd_get | awk '{print $3+0}'`

get_hits=`/usr/local/nagios/libexec/check_tcp -H localhost -p 11211 -E -s 'statsrnquitrn' -e 'uptime' |grep get_hits | awk '{print $3+0}'`

limit_maxbytes=`/usr/local/nagios/libexec/check_tcp -H localhost -p 11211 -E -s 'statsrnquitrn' -e 'uptime' |grep limit_maxbytes | awk '{print $3/1024/1024}'`

th=`/usr/local/nagios/libexec/check_tcp -H localhost -p 11211 -E -s 'statsrnquitrn' -e 'uptime' |grep threads | awk '{print $3+0}'`

bytes=`/usr/local/nagios/libexec/check_tcp -H localhost -p 11211 -E -s 'statsrnquitrn' -e 'uptime' |grep bytes |grep -vn '_'|awk '{print $3/1024/1024}'`

ci=`/usr/local/nagios/libexec/check_tcp -H localhost -p 11211 -E -s 'statsrnquitrn' -e 'uptime' |grep curr_items|awk '{print $3+0}'`

hit_rate=`echo "$get_hits*100/$cmd_get"|bc`


mem_percentage=`echo "scale=2;100*$bytes/$limit_maxbytes"|bc`


if [ $hit_rate -gt $4 ];then
   echo "OK - hit rate is $hit_rate |Hit_rate=$hit_rate; Response=$response; mem_percentage=$mem_percentage%; Used_mem=$bytes; limit_maxMem=$limit_maxbytes; curr_items=$ci; curr_connections=$connections"
   exit 0

fi

if [ $hit_rate -lt $4 ] && [ $hit_rate -gt $2 ];then
   echo "Warning - hit rate is $hit_rate |Hit_rate=$hit_rate; Response=$response; mem_percentage=$mem_percentage%; Used_mem=$bytes; limit_maxMem=$limit_maxbytes; curr_items=$ci; curr_connections=$connections"

   exit 1

fi

if [ $hit_rate -lt $2 ];then
   echo "Critical - hit rate is $hit_rate |Hit_rate=$hit_rate; Response=$response; mem_percentage=$mem_percentage%; Used_mem=$bytes; limit_maxMem=$limit_maxbytes; curr_items=$ci; curr_connections=$connections"

   exit 2

fi

二、运行结果如下：