mysql 数据库自动热备份脚本（centos+mysqlhotcopy）

mysql.backuper.sh

#!/bin/sh

# Moyo <dev@uuland.org> @ 2012/02/22 10:00
# @url http://moyo.uuland.org/system/mysqlhotcopy-auto-sh/

# DEFINED ~~
# 需要备份的数据库列表（空格间隔）
dbns="mysql"
# 备份目录
dbsf=/home/backup/database
# notify MAIL
smail="server.moyo@gmail.com"
# from MAIL
fmail="server@cenwor.com"
# 备份保存时间（天）
dbkeepd=7
# mysqlhotcopy 位置
mysqlhotcopy=/usr/local/mysql/bin/mysqlhotcopy
# backup start
cdate=`date "+%Y.%m.%d"`
ii=0
tsa=0
tmplog="$dbsf/$cdate.ops.log"
for dbn in $dbns; do
# ~~
bakdirbase="$dbsf/$dbn"
if [ ! -e $bakdirbase ]
then
        mkdir -p $bakdirbase
fi
pkgfile="$bakdirbase/$cdate.tar.gz"
if [ -e $pkgfile ]
then
        echo "$dbn has been backuped. [$pkgfile]" >> $tmplog
else
	ii=`expr $ii + 1`
        # mk dir
        bakdircur="$bakdirbase/$cdate"
        if [ ! -e $bakdircur ]
        then
                mkdir -p $bakdircur
                echo "moyo" > "$bakdircur/rm.lock"
        fi
        # start
        time_start=`date "+%s"`
        # s1 : backup
        $mysqlhotcopy $dbn --addtodest $bakdircur
        # s2 : package
        tar czf $pkgfile -C $bakdircur $dbn
        # s3 : rm dir
        if [ -e $bakdircur/rm.lock ]
        then
                rm -rf $bakdircur
        fi
        # time calc
        time_stop=`date "+%s"`
        time_use=`expr $time_stop - $time_start`
        echo  "$dbn backup && package finish / use $time_use (s)" >> $tmplog
        tsa=`expr $tsa + $time_use`
	# delete old backups
	echo "---" >> $tmplog
	echo "detecting if old backups..." >> $tmplog
	find $bakdirbase -type f -mtime +$dbkeepd -name "*.tar.gz" -exec rm -f {} \; >> $tmplog
fi
echo "--- === ---" >> $tmplog
# ~~
done
# send mail
msubject="[ "`date "+%Y-%m-%d"`" ] database ($ii) backuped | use $tsa (s)"
cat $tmplog | mail -s "$msubject" $smail -- -f $fmail
rm -f $tmplog