Monday, September 7, 2009

MYSQL BACKUP.sh

#!/usr/bin/env bash

#
# Created 2005-06-24 by Matthew Montgomery - mmontgom@rackspace.com
#
# Change: 2006-06-01 by Matthew Montgomery
# Add support for ibbbackup for InnoDB tables
# Add support for MySQL 4.1 and 5.0
#

DATE=`date -I`
DATADIR="/var/lib/mysql"
BASE_DIR="/mnt/drive2/backup"
BACKUP_DIR="$BASE_DIR/current"
INTERVAL="$1"
RETENTION=14 # days
HOST=`hostname -s`
MYVERSION=`mysql -Bse "SELECT substring_index(version(),'.',2)"`
### Uncomment this line to specify the path to and enable ibbackup for hotcopy of InnoDB tables.
# IBBACKUP="/usr/local/bin/ibbackup"

if [ "$MYVERSION" = '4.1' ] || [ "$MYVERSION" = '5.0' ] ; then
PURGELOGS='mysql -e "PURGE MASTER LOGS BEFORE DATE_SUB( NOW(), INTERVAL 1 HOUR )"'
elif [ $MYVERSION = '3.23' -o "$MYVERSION" = '4.0' ]; then
PURGELOGS='mysql -e "RESET MASTER"'
else
echo "UNSUPPORTED MYSQL VERSION"
exit 1
fi

if [ ! $1 ];
then
read -p "Backup Interval? (Hourly|Daily) : " INTERVAL
fi

case $INTERVAL in
hourly | HOURLY | Hourly | 1 )
echo "Performing HOURLY level backup -- `date`"
mysql -e "FLUSH LOGS"
if [ -d $BASE_DIR/$DATE ] && [ "$MYVERSION" = '4.1' -o "$MYVERSION" = '5.0' ] ; then
rsync -aub $DATADIR/$HOST-bin.?????? $BASE_DIR/$DATE
elif [ -d $BASE_DIR/$DATE ] && [ "$MYVERSION" = '3.23' -o "$MYVERSION" = '4.0' ] ; then
rsync -aub $DATADIR/$HOST-bin.??? $BASE_DIR/$DATE
else
echo "No destination dir! please run daily backup first." 1>&2
exit 1
fi
sleep 1
find $BASE_DIR -size 98c -exec rm -rf '{}' \;
exit 0
;;
daily | DAILY | Daily | 2 )
echo "Performing DAILY level backup -- `date`"
if [ ! -d $BACKUP_DIR ];
then
echo Creating $BACKUP_DIR
mkdir -p $BACKUP_DIR
fi

if [ ! -z "$IBBACKUP" ] ; then
$IBBACKUP /etc/my.cnf /etc/my.cnf.ibbackup 2>&1
$IBBACKUP --apply-log /etc/my.cnf.ibbackup 2>&1
rm $BACKUP_DIR/ibbackup_logfile
fi
mysqlhotcopy --regexp=.* $BACKUP_DIR
chown -R mysql: $BACKUP_DIR/
mv $BACKUP_DIR $BASE_DIR/$DATE
eval $PURGELOGS
find $BASE_DIR -ctime +$RETENTION -exec rm -rf '{}' \;
exit 0
;;
* )
echo "Invalid Selection" 1>&2
exit 1
esac

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