文章內(nèi)容

Linux下MySQL數(shù)據(jù)庫(kù)備份腳本

發(fā)布時(shí)間: 2012/9/17 17:13:27

這個(gè)腳本是07年在網(wǎng)上查找并經(jīng)過(guò)修改用到正式系統(tǒng)下的腳本，數(shù)據(jù)庫(kù)名字讓我改為了LinuxIDC.com

1.首先建立sh文件,在/usr/bin/先建立一個(gè)名叫mysqlscript.sh的腳本文件,內(nèi)容參見mysqlscript.sh

2.其次在根目錄下打開 #crontab -e 輸入以下內(nèi)容 12 12 * * * /usr/bin/mysqlscript.sh-

3.最后,如果發(fā)現(xiàn)不能定時(shí)執(zhí)行腳本,可能的原因是mysqlscript.sh腳本文件的權(quán)限問(wèn)題,然后更改為可執(zhí)行文件#chmod 777 mysqlscript.sh;

4.上面的工作做完以后就應(yīng)該沒(méi)什么問(wèn)題.
mysqlscript.sh的腳本內(nèi)容如下：

#!/bin/bash
#This is a ShellScript For Auto DB Backup
#Powered by aspbiz
#2007-11-25

#Setting
#設(shè)置數(shù)據(jù)庫(kù)名，數(shù)據(jù)庫(kù)登錄名，密碼，備份路徑，日志路徑，數(shù)據(jù)文件位置，以及備份方式
#默認(rèn)情況下備份方式是tar，還可以是mysqldump,mysqldotcopy
#默認(rèn)情況下，用root(空)登錄mysql數(shù)據(jù)庫(kù)，備份至/root/dbxxxxx.tgz
#數(shù)據(jù)庫(kù)名
DBName=LinuxIDC.com
#數(shù)據(jù)庫(kù)用戶名
DBUser=root
#密碼
DBPasswd=!qazdr%
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