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mysql_backup_sh.sh
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mysql_backup_sh.sh
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#!/bin/bash
#用户名
username=root
#密码
password=pwd
# 地址
address=192.168.1.13
#将要备份的数据库
database_name=database
#保存备份文件最多个数
count=30
#备份保存路径
backup_path=/data/mysql_backup
#日期
date_time=`date +%Y-%m-%d-%H-%M`
#如果文件夹不存在则创建
if [ ! -d $backup_path ];
then
mkdir -p $backup_path;
fi
#开始备份
mysqldump -h $address -u $username -p$password $database_name > $backup_path/$database_name-$date_time.sql
#开始压缩
cd $backup_path
tar -zcvf $database_name-$date_time.tar.gz $database_name-$date_time.sql
#删除源文件
rm -rf $backup_path/$database_name-$date_time.sql
#更新备份日志
echo "create $backup_path/$database_name-$date_time.tar.gz" >> $backup_path/dump.log
#找出需要删除的备份
delfile=`ls -l -crt $backup_path/*.tar.gz | awk '{print $9 }' | head -1`
#判断现在的备份数量是否大于阈值
number=`ls -l -crt $backup_path/*.tar.gz | awk '{print $9 }' | wc -l`
if [ $number -gt $count ]
then
#删除最早生成的备份,只保留count数量的备份
rm $delfile
#更新删除文件日志
echo "delete $delfile" >> $backup_path/dump.log
fi