Home Database Mysql Tutorial 使用shell定时自动备份mysql数据库_MySQL

使用shell定时自动备份mysql数据库_MySQL

May 27, 2016 pm 01:46 PM

使用shell定时自动备份mysql数据库_MySQL

#!/bin/bash
 
id="root" #用户名
pwd="123456" #密码
dbs="blog.ewsd.cn dangjian.ewsd.cn idc.ewsd.cn shangfa.ewsd.cn" #数据库名字的列表,多个数据库用空格分开
backuppath="/home/mysqlbackup" #保存备份的位置
day=30   #保留最近几天的备份
[ ! -d $backuppath ] &&mkdir -p $backuppath  #判断备份目录是否存在,不存时新建目录。
cd $backuppath   #转到备份目录,这句话可以省略。可以直接将路径到命令的也行。
 
backupname=mysql_$(date +%Y-%m-%d)  #生成备份文件的名字的前缀,不带后缀。
for db in $dbs;   #dbs是一个数据名字的集合。遍历所有的数据。
do
 
mysqldump -u$id -p$pwd -S /tmp/mysql.sock $db >$backupname_$db.sql  #备份单个数据为.sql文件。放到当前位置
 
if [ "$?" == "0" ]  #$? 得到上一个shell命令的执行的返回值。0表示执行成功。其他表示错误。并将将结果写入到日志中。
   then
       echo $(date +%Y-%m-%d)" $db  mysqldump sucess">>mysql.log
   else
      echo $(date +%Y-%m-%d)"  $db mysql dump failed">>mysql.log
      exit 0
   fi
done
tar -czf $backupname.tar.gz *.sql #压缩所有sql文件
if [ "$?" == "0" ]
then
   echo $(date +%Y-%m-%d)" tar sucess">>mysql.log
else
   echo $(date +%Y-%m-%d)" tar failed">>mysql.log
   exit 0
fi
rm -f *.sql  #删除所有的sql文件
 
delname=mysql_$(date -d "$day day ago" +%Y-%m-%d).tar.gz  #得到要删除的太旧的备份的名字。
rm -f $delname  #删除文件。
Copy after login

 

将以上脚本加入定时计划crontab中即可,下载地址 注意脚本的执行权限设置。

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