这篇文章主要介绍了一个简单的MySQL备份Shell脚本,本文直接给出代码实例,需要的朋友可以参考下
- #!/bin/bash
- #this is a script of mysql backup
- if [ ! -d /mydata/data1/backup ] ;then
- mkdir /mydata/data1/backup
- fi
- cd /mydata/data1/backup
- file=$(find . -type f -mtime -7 | grep .*all.sql) #查找7天内是否有备份的文件
- echo $file
- if [ -z $file ] ;then
- echo "backup all databases..."
- backupfile=$(date +%F-%H-%M-%S)
- mysqldump -uroot --lock-all-tables --flush-logs --master-data=2 --all-databases > /mydata/data1/backup/"$backupfile-all.sql"
- if [ $? -eq 0 ] ;then
- echo "Accomplish,file is $backupfile-all.sql !"
- else
- echo " Failure !!! "
- fi
- else #查找倒数第二大的二进制文件,作增量备份
- cd ..
- echo "All database backups ,now start doing incremental backups!"
- a=1
- b=1
- for file in $(ls |grep mysql-bin |grep -v index);do
- num=$(echo $file |cut -d. -f2 )
- if [ $num -gt $a ];then
- a=$num
- fi
- done
- unset num file
- num=1
- for file in $(ls |grep mysql-bin |grep -v index);do
- num=$(echo $file |cut -d. -f2 )
- if [ $num -gt $b -a $num -ne $a ] ; then
- b=$num
- tmp=$file
- fi
- done
- file1=$(echo $tmp|cut -d. -f1)
- file2=$(echo $tmp|cut -d. -f2)
- mysqlbinlog $tmp > /mydata/data1/backup/"$file1-$file2.sql"
- if [ $? -eq 0 ] ;then
- echo "Backup completed,file is "$file1-$file2.sql""
- fi
- fi
说明:此脚本每七天做一次完全备份,以后每天做一次增量备份,完全备份使用mysqldump客户端工具,增量备份使用mysqlbinlog备份其二进制日志文件。
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