mysql backup 脚本

保证创建备份文件只能是创建者跟root可以访问，其他用户没有权限，保证了数据库备份的安全。
#!/bin/bash

###################################

# $Id: backup 3802012-04-0210:38:59Z netkiller $

# Author: netkiller@msn.com

# Home: http://netkiller.github.com
###################################

BACKUP_HOST="localhost"

BACKUP_USER="root"

BACKUP_PASS=""

BACKUP_DIR=/opt/backup

BACKUP_DBNAME="test neo"

#Number of copies

COPIES=7

####################################

MYSQLDUMP="mysqldump"

#TIMEPOINT=$(date -u +%Y-%m-%d)

TIMEPOINT=$(date -u +%Y-%m-%d.%H:%M:%S)

MYSQLDUMP_OPTS="-h $BACKUP_HOST -u$BACKUP_USER -p$BACKUP_PASS"

####################################

umask 0077

test ! -d "$BACKUP_DIR" && mkdir -p "$BACKUP_DIR"

test ! -w $BACKUP_DIR && echo "Error: $BACKUP_DIR is un-writeable." && exit 0

for dbname in $BACKUP_DBNAME

do

test ! -d "$BACKUP_DIR/$dbname" && mkdir -p "$BACKUP_DIR/$dbname"

$MYSQLDUMP $MYSQLDUMP_OPTS $dbname | gzip > $BACKUP_DIR/$dbname/$dbname.$TIMEPOINT.sql.gz

done

find $BACKUP_DIR -type f -mtime +$COPIES -delete