【图】MYSQL代码:定期备份Mysql数据库

相信很多个人网站的站长，或者是独立Blog的博主，都有着备份数据库这样一个需求。当然WordPress这样插件非常丰富的Blog系统有好多能帮你完成这项任务的插件。如果您需要自己亲手来备份数据库的话，我贴一个Mysql自动备份脚本供大家参考，在国外网站上看到的，还是不错，实现了定期备份Mysql数据库，并且可以选在在每周的一天做指定目录下文件的全面备份，备份文件自动上传到你指定的FTP上，保证了备份的可靠性。如果只是把数据库备份在和数据库一起，我想意义也不是特别大了。

#!/bin/sh
# System + MySQL backup script
# Full backup day - Sun (rest of the day do incremental backup)
# Copyright (c) 2005-2006 nixCraft http://www.cyberciti.biz/fb/
# This script is licensed under GNU GPL version 2.0 or above
# Automatically generated by
# http://bash.cyberciti.biz/backup/wizard-ftp-script.php
# ---------------------------------------------------------------------

### System Setup ###
##备份本件本地目录##
DIRS="/home/xxxx"
BACKUP=/tmp/backup.$$
##日期格式可以自己调节##
NOW=$(date +"%Y-%m-%d")
INCFILE="/home/xxxx"
DAY=$(date +"%u")
##星期天完全备份可以自己调节##
FULLBACKUP="7"

### MySQL Setup ###
MUSER="chaos"
MPASS="password"
MHOST="host"
MYSQL="$(which mysql)"
MYSQLDUMP="$(which mysqldump)"
GZIP="$(which gzip)"

### FTP server Setup ###
##增量备份路径##
FTPD="/backup/xxxx/incremental"
FTPU="chaos"
FTPP="password"
FTPS="xxx.xxx.com"

### Other stuff ###
EMAILID="chaos@diablo.net"

### Start Backup for file system ###
[ ! -d $BACKUP ] && mkdir -p $BACKUP || :

### See if we want to make a full backup ###
if [ "$DAY" == "$FULLBACKUP" ]; then
##完全备份路径##
FTPD="/backup/xxxx/full"
FILE="fs-full-$NOW.tar.gz"
tar -zcvf $BACKUP/$FILE $DIRS
else
i=$(date +"%Hh%Mm%Ss")
FILE="fs-i-$NOW-$i.tar.gz"
tar -g $INCFILE -zcvf $BACKUP/$FILE $DIRS
fi

### Start MySQL Backup ###
# Get all databases name
##备份所有数据库可自行调整或备份指定数据库##
DBS="$($MYSQL -u $MUSER -h $MHOST -p$MPASS -Bse 'show databases')"
for db in $DBS
do
FILE=$BACKUP/mysql-$db.$NOW-$(date +"%T").gz
$MYSQLDUMP -u $MUSER -h $MHOST -p$MPASS $db | $GZIP -9 $FILE
done

### Dump backup using FTP ###
#Start FTP backup using lftp
##ubuntu上可以使用ncftp 自行调节##
#ncftp -u"$FTPU" -p"$FTPP" $FTPSEOF
lftp -u $FTPU,$FTPP $FTPSEOF
mkdir $FTPD
mkdir $FTPD/$NOW
cd $FTPD/$NOW
lcd $BACKUP
mput *
quit
EOF

### Find out if ftp backup failed or not ###
if [ "$？" == "0" ]; then
rm -f $BACKUP/*
else
T=/tmp/backup.fail
echo "Date: $(date)"$T
echo "Hostname: $(hostname)" $T
echo "Backup failed" $T
mail -s "BACKUP FAILED" "$EMAILID" $T
rm -f $T
fi