Home Database Mysql Tutorial 带自动清理功能的MySQL备份到FTP的Shell脚本

带自动清理功能的MySQL备份到FTP的Shell脚本

Jun 07, 2016 pm 04:33 PM
ftp mysql shell Function backup clean up Script automatic

以前公司用的一个网上找的MySQL自动备份到FTP的Shell脚本,一直用着不错。但是问题就是随着备份文件的越来越多,不得不定期清理FTP上的老备份文件,十分的不便。 实际上MySQL备份无需保留太长时间的,如果能有自动清理旧的备份文件的功能就好了。不过网上找

以前公司用的一个网上找的MySQL自动备份到FTP的Shell脚本,一直用着不错。但是问题就是随着备份文件的越来越多,不得不定期清理FTP上的老备份文件,十分的不便。

实际上MySQL备份无需保留太长时间的,如果能有自动清理旧的备份文件的功能就好了。不过网上找了一下,虽然也有这方面的脚本,不过可能不太符合我的需求吧。于是只能自己手动改下以前的那个Shell脚本来实现咯。

首先我们要确定保留备份的时间,我觉得一个月的备份保留就足够了。因为基本不会出现1个月后要恢复1个月之前备份的情况。(如果有请自己手动备份,毕竟自动备份还是不能取代手动备份的部分)。那么我们的思路就出来了:在上传以当天日期为文件名的备份的时候,顺便删除下一个月之前的同日期备份,就可以确保服务器上保留的是最近一个月的备份了。

然后我们需要知道Linux下的一个命令:date。这是个可以查看当前服务器的时间日期信息的命令。当然这里我们需要知道的是这个命令的参数,毕竟我们需要得到的是日期部分。

输入下面这个命令,可以看到“年-月-日”的输入,类似“2011-09-09”:

date +%Y-%m-%d

那么,如果我们要得到1个月之前的日期怎么办呢?使用下面的这条命令就可以得到:

date -d last-month +%Y-%m-%d

怎么样?简单吧。实际备份的时候,因为之前脚本使用的是“m-d-Y”的形式,也就是“月-日-年”的形式,所以我稍微做了下调整。但是下面这个Shell脚本中的是按照“年-月-日”来产生文件名的。

于是,给出整个备份Shell脚本,需要的朋友只需要填写下有中文说明的部分,即可在自己的Linux服务器上使用。使用办法:复制到某个目录下,然后给予执行权限,再在cron中设置每天指定时间运行即可。(关于这部分,请自行查找相关说明,这里不再复述)

带自动清理功能的MySQL备份到FTP的Shell脚本如下:

#!/bin/bash
MyUSER="db_username"     # 数据库用户名,建议使用root账户或者拥有全局权限的用户名
MyPASS="db_password"       # 数据库密码
MyHOST="localhost"          # 数据库服务器
# Linux bin paths, change this if it can't be autodetected via which command
MYSQL="$(which mysql)"
MYSQLDUMP="$(which mysqldump)"
CHOWN="$(which chown)"
CHMOD="$(which chmod)"
GZIP="$(which gzip)"
# 数据库备份的路径
DEST="/home/backup"
# Main directory where backup will be stored
MBD="$DEST/mysql"
# Get hostname
HOST="$(hostname)"
# Get data in dd-mm-yyyy format
NOW="$(date +%d-%m-%Y)"
OLD="$(date -d last-month +%d-%m-%Y)"
# File to store current backup file
FILE=""
# Store list of databases
DBS=""
# DO NOT BACKUP these databases
IGGY="test"
rm -rf $MBD
[ ! -d $MBD ] && mkdir -p $MBD || :
# Only root can access it!
$CHOWN 0.0 -R $DEST
$CHMOD 0600 $DEST
# Get all database list first
DBS="$($MYSQL -u $MyUSER -h $MyHOST -p$MyPASS -Bse 'show databases')"
cat > ftpcc.sh > ftpcc.sh
        # do all inone job in pipe,
        # connect to mysql using mysqldump for select mysql database
        # and pipe it out to gz file in backup dir :)
        $MYSQLDUMP -u $MyUSER -h $MyHOST -p$MyPASS $db | $GZIP -9 > $FILE
    fi
done
cat >> ftpcc.sh 
<p>这样的Shell脚本运行后,可以得到每个MySQL库的独立备份文件,且以gz格式压缩以便节省空间。</p>
    <p class="copyright">
        原文地址:带自动清理功能的MySQL备份到FTP的Shell脚本, 感谢原作者分享。
    </p>
    
    


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