MySql自动备份是非常关键的,特别是对于DBA来说。这里主要用代码来说明这个问题,希望对各位有所帮助。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。
代码:
#!/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 |
阅读(334) | 评论(0) | 转发(0) |