在服务器上用shell定时备份mysql

1. 在crontab中加入定时备份任务

20 1 * * * cd /www/tools;/bin/bash /www/tools/back.sh

2. /www/tools/目录下back.sh

dbs=(autohome car content data hangqing manager question saler spider user)

for db in ${dbs[@]}

do

/bin/sh mysql.sh $db

done

3. /www/tools/目录下mysql.sh

#!/bin/bash

#Setting Start

DBName=$1

DBUser=#数据库用户名

DBPasswd=#数据库密码

BackupPath=/data/backup/mysql/  #备份路径

LogFile=/data/logs/backup/db_backup.log  #日志路径

DBPath=/usr/bin/mysql  #mysql的安装路径

BackupMethod=mysqldump  #备份命令

#Setting End

NewFile="$BackupPath"$DBName$(date +%y%m%d).tgz

DumpFile="$BackupPath"$DBName$(date +%y%m%d)

OldFile="$BackupPath"$DBName$(date +%y%m%d --date='5 days ago').tgz

echo "-------------------------------------------" >> $LogFile

echo $(date +"%y-%m-%d %H:%M:%S") >> $LogFile

echo "--------------------------" >> $LogFile

#Delete Old File

if [ -f $OldFile ]

then

rm -f $OldFile >> $LogFile 2>&1

echo "[$OldFile]Delete Old File Success!" >> $LogFile

else

echo "[$OldFile]No Old Backup File!" >> $LogFile

fi

if [ -f $NewFile ]

then

echo "[$NewFile]The Backup File is exists,Can't Backup!" >> $LogFile

else

case $BackupMethod in

mysqldump)

if [ -z $DBPasswd ]

then

mysqldump -u $DBUser --opt $DBName > $DumpFile

else

mysqldump -u $DBUser -p$DBPasswd --opt $DBName > $DumpFile

fi

tar czvf $NewFile $DumpFile >> $LogFile 2>&1

echo "[$NewFile]Backup Success!" >> $LogFile

rm -rf $DumpFile

;;

mysqlhotcopy)

rm -rf $DumpFile

mkdir $DumpFile

if [ -z $DBPasswd ]

then

mysqlhotcopy -u $DBUser $DBName $DumpFile >> $LogFile 2>&1

else

mysqlhotcopy -u $DBUser -p $DBPasswd $DBName $DumpFile >>$LogFile 2>&1

fi

tar czvf $NewFile $DumpFile >> $LogFile 2>&1

echo "[$NewFile]Backup Success!" >> $LogFile

rm -rf $DumpFile

;;

*)

/etc/init.d/mysqld stop >/dev/null 2>&1

tar czvf $NewFile $DBPath$DBName >> $LogFile 2>&1

/etc/init.d/mysqld start >/dev/null 2>&1

echo "[$NewFile]Backup Success!" >> $LogFile

;;

esac

fi