linux下Mysql自动备份脚本

linux下Mysql自动备份脚本

Mysql自动备份脚本

找到一个Mysql自动备份脚本大家需要的话可以自己根据需求参考修改一下

该脚本功能介绍：可以将这个脚本放进crontab，每天凌晨执行一次，自动备份,支持多种备份方式，自动翻转。

该脚本每天最多只执行一次，而且只保留最近五天的备份在服务器上。

#!/bin/bash

#This is a ShellScript For Auto DB Backup

#Setting

#设置数据库名，数据库登录名，密码，备份路径，日志路径，数据文件位置，以及备份方式

#默认情况下备份方式是tar，还可以是mysqldump,mysqldotcopy

#默认情况下，用root(空)登录mysql数据库，备份至/root/dbxxxxx.tgz

DBName=mysql

DBUser=root

DBPasswd=

BackupPath=/root/

LogFile=/root/db.log

DBPath=/var/lib/mysql/

#BackupMethod=mysqldump

#BackupMethod=mysqlhotcopy

#BackupMethod=tar

#Setting End

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

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

OldFile="$BackupPath"db$(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

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