nagios监控memcache命中率的shell插件

#!/bin/sh

#if [ $# -ne 2 ]

#then

# echo "Usage:$0  -w num1 -c num2"

#exit 3

#fi

#DATE=`date +%Y-%m-%d`

#curr_connections=`/usr/local/nagios/libexec/check_tcp -H localhost  -p 11211 -E -s 'stats\r\nquit\r\n' -e 'uptime' |grep curr_connections | awk '{print $3}'`

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

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

#limit_maxbytes=`/usr/local/nagios/libexec/check_tcp -H localhost  -p 11211 -E -s 'stats\r\nquit\r\n' -e 'uptime' |grep limit_maxbytes | awk '{print $3+0}'`

#threads=`/usr/local/nagios/libexec/check_tcp -H localhost  -p 11211 -E -s 'stats\r\nquit\r\n' -e 'uptime' |grep threads | awk '{print $3}'`

#bytes=`/usr/local/nagios/libexec/check_tcp -H localhost  -p 11211 -E -s 'stats\r\nquit\r\n' -e 'uptime' |grep bytes |grep -vn '_'|awk '{print $3+0}'`

#curr_items=`/usr/local/nagios/libexec/check_tcp -H localhost  -p 11211 -E -s 'stats\r\nquit\r\n' -e 'uptime' |grep curr_items|awk '{print $3}'`

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

# echo "$hit_rate"

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

# echo "$mem_percentage"

if [[ $hit_rate -gt $1 ]]

   then

   echo "OK - hit rate is $hit_rate | hit_rate=$hit_rate; cmd_get=$cmd_get; get_hits=$get_hits"

   exit 0

fi

if [[ $hit_rate -lt $2 ]]

   then

   echo "Critical - hit rate is $hit_rate | hit_rate=$hit_rate; cmd_get=$cmd_get; get_hits=$get_hits"

   exit 1

fi

if [[ $hit_rate -lt $1 ]]

   then

   echo "WARNING - hit rate is $hit_rate | hit_rate=$hit_rate; cmd_get=$cmd_get; get_hits=$get_hits"

   exit 2

fi