#!/bin/sh

BACKUPDIR=/home/mysql_backup
LOGFILE=${BACKUPDIR}/my_dump_mysql.log
SENDNSCA=/usr/local/sbin/send_nsca\ -H\ <nagios_host>\ -d\ ';;'\ -c\ /usr/local/etc/nagios/send_nsca.cfg
HOSTNAME=`/bin/hostname -f | /usr/bin/cut -d '.' -f 1,2`
backup_success=1

mkdir -p ${BACKUPDIR}
rm -f ${LOGFILE};

for i in `echo 'show databases;' | mysql | grep -v Database`;
do
  echo -n " ---> backuping ${i}..." >> ${LOGFILE}
  mysqldump --add-drop-table --add-locks --create-options --disable-keys --extended-insert --single-transaction\
    --databases --lock-tables --quick --set-charset $i > ${BACKUPDIR}/$i.sql 2>> ${LOGFILE};
  if [ $? -eq 0 ];
  then
    echo " OK" >> ${LOGFILE};
  else
    backup_success=0
  fi
done

if [ $backup_success -eq 1 ]
then
        echo "${HOSTNAME};;mysql_backups;;0;OK - backup succeeded at `date`" | ${SENDNSCA} >/dev/null
else
        echo "${HOSTNAME};;mysql_backups;;2;CRITICAL - backup failed at `date`, please check ${LOGFILE} for complete report." | ${SENDNSCA} >/dev/null
fi