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写了一个Mysql备份的脚本,大家看看,有什么不妥地方。
这是我写的第一个Shell脚本,大家帮忙看看,
有谁需要的,我可以发给他。
可以将这个脚本放进crontab,每天凌晨执行一次,自动备份
这个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
- #Powered by aspbiz
- #2004-09
- #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
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