#!/bin/bash
# $1 : name of the file to check
# $1 : name of the script to check
checkActiveOnce(){
count=$(ps -ef | fgrep $1 | fgrep -v grep | wc -l)
if test "$count" -gt 2 ; then
echo "Multiple instance of $1"
exit 2
fi
}
# $1 : max query time, after this value, the request will be killed
# $2 : state of the query to grep for to avoid killing other requests
checkLockedSqlRequests(){
oldIFS=$IFS
IFS=$'\n'
mysqladmin processlist | tr -s ' ' | head -n -1 | tail -n +4 | fgrep -v root | fgrep $2 |while read line ; do
time=$(echo "$line" | cut -d ' ' -f 12)
test "$time" == "" && continue
echo "$time" | grep -ev '^[0-9]+$' && continue
if test "$time" -gt $1 ; then
pid=$(echo $line | cut -d ' ' -f 2)
echo "Killing red $pid because req time = $time"
mysqladmin kill $pid
fi
done
}
checkMysqlDumpActive(){
count=$(ps -ef | fgrep mysqldump | fgrep -v grep | wc -l)
if test "$count" -eq 0 ; then
return 1
else
return 0
fi
}
checkActiveOnce `basename $0`
watchdog=0
while true ; do
if test "$watchdog" -gt 10 ; then
echo "Watchdog > 60"
exit 3
fi
if ! checkMysqlDumpActive ; then
echo "No mysqldump process active, incrementing watchdog : $watchdog"
watchdog=$(($watchdog + 1))
sleep 1
continue
fi
watchdog=0
checkLockedSqlRequests 15 lock
sleep 1
done
Mini Shell