Script-for-multi-Instances-alerts-processing

#!/bin/bash
#query to detect ALERTS that should be started simultaneously
alerts=`mysql voipmonitor2 -e "select id from alerts where note like '%RUN-M%' and disable=1 and 
alert_type=19\G"|grep id|cut -d ':' -f 2`
#maximum count of simultaneous alerts runs
simmax=5
#counter
atonce=1
#alerts command string
alertcmd=
tmpcmd=
#log
day=`date "+%m-%d-%Y"`
file=/root/vm-scripts/manual-alerts/alerts-${day}.txt
cd /var/www/html/php
for id in ${alerts[*]}
do
        alertcmd="$tmpcmd php run.php run_alerts -f -I $id"
        if [ "1$atonce" = "1$simmax" ]; then
                atonce=1
                echo "`date "+%H:%M:%S"`" >> $file
                echo $alertcmd >> $file
                #run command
                $($alertcmd)
                #log end
                echo "`date "+%H:%M:%S"`" >> $file
                echo >> $file
                alertcmd=
        else
                ((atonce+=1))
                tmpcmd="$alertcmd &"
        fi
done
echo >> $file
 
#If there are unprocesed rest of tasks (not simmax count) do it
 if [ "1" != "1$alertcmd" ]; then 
 	echo "`date "+%H:%M:%S"`" >> $file
 	echo $alertcmd >> $file
 	#run command
    $($alertcmd)
    #log end
    echo "`date "+%H:%M:%S"`" >> $file
    echo >> $file
    alertcmd=
fi