#!/bin/bash

DB_USER=root
DB_PASSWD=""
#需要备份的数据库名
DATABASES="bigamer bigamer_ucenter bigamer_anwsion bigamer_passport"
BACKUP_DIR="/home/backup/mysql/"
DATE=`date '+%Y%m%d'`
DUMPFILE=$DATE.sql
ARCHIVEFILE=$DUMPFILE.tar.gz
DUMP_ARGS="-u $DB_USER -p $DB_PASSWD --add-drop-table --add-drop-database -B $DATABASES"
DUMP_BIN=`which mysqldump`

if [ ! -d $BACKUP_DIR ]; then
mkdir -p "$BACKUP_DIR"
fi

cd $BACKUP_DIR

$DUMP_BIN $DUMP_ARGS > $DUMPFILE

if [[ $? == 0 ]]; then
tar czf $ARCHIVEFILE $DUMPFILE
    rm -f $DUMPFILE
fi

#清理五天前备份的数据
find $BACKUP_DIR -name "*.sql.tar.gz" -type f -mtime +5 -exec rm {} \; > /dev/null 2>&1

echo "Backup Process Done"