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#!/bin/bash

export PATH=$PATH:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
                                          
parameter_measured=mysql;

if [ -f /usr/lib64/nagios/plugins/bc/bc_mysqladmin_version.txt ]
then

measured_value=$( cat /usr/lib64/nagios/plugins/bc/bc_mysqladmin_version.txt | grep Uptime: | wc -l );

display_message="Mysql uptime: $(grep Uptime: /usr/lib64/nagios/plugins/bc/bc_mysqladmin_version.txt | cut -d ":" -f 2 | sed "s/^[ \t]*//" )";

trigger_value=0;

queries_per_second=$( echo "scale=1;$(cat /usr/lib64/nagios/plugins/bc/bc_mysqladmin_version.txt | grep Threads: | cut -d ":" -f 8 | awk '{print $1}')/1" | bc );
slow_queries=$( echo "scale=1;$(cat /usr/lib64/nagios/plugins/bc/bc_mysqladmin_version.txt | grep Threads: | cut -d ":" -f 4 | awk '{print $1}')/1"  | bc );

which bc >/dev/null 2>&1
if [ $? -eq 0 ]
then

if [ $measured_value -eq $trigger_value ]
then
printf "$parameter_measured CRITICAL - Mysql is not running" 
printf '|' 
printf "queries_per_second=$queries_per_second;;;; ";
printf "slow_queries=$slow_queries;;;; ";
exit 2;

else
printf "$parameter_measured OK - $display_message" 
printf '|' 
printf "queries_per_second=$queries_per_second;;;; ";
printf "slow_queries=$slow_queries;;;; ";
exit 0;
fi

else

printf "$parameter_measured CRITICAL - bc command required for monitoring is missing"
printf '|'
printf "$parameter_measured=0;;;; ";
exit 2;

else

printf "$parameter_measured CRITICAL - Cron required for monitoring is missing"
printf '|'
printf "$parameter_measured=0;;;; ";
exit 2;