MySql定时备份脚本

最近需要对某服务的数据库数据进行备份，因此参考网上教程完成数据库备份脚本.
因为服务的使用频率较低，因此设置定时任务，在每天的中午以及午夜时分进行备份操作.

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1#!/bin/bash

2# 设置mysql的登录用户名和密码(根据实际情况填写)

3mysql_user="***"

4mysql_password="****"

5mysql_host="localhost"

6mysql_port="3306"

7mysql_charset="utf8mb4"

8

9# 备份文件存放地址(根据实际情况填写)

10backup_location=/home/app/***/sql_backup

11

12# 是否删除过期数据

13expire_backup_delete="ON"

14expire_days=7

15backup_time=`date +%Y%m%d%H%M`

16backup_dir=$backup_location

17welcome_msg="Welcome to use MySQL backup tools!"

18

19# 判断mysql实例是否正常运行

20mysql_ps=`ps -ef |grep mysql |wc -l`

21mysql_listen=`netstat -an |grep LISTEN |grep $mysql_port|wc -l`

22if [ [$mysql_ps == 0] -o [$mysql_listen == 0] ]; then

23        echo "ERROR:MySQL is not running! backup stop!"

24        exit

25else

26        echo $welcome_msg

27fi

28

29# 备份指定数据库中数据(此处假设数据库是mysql_backup_test)

30mysqldump -h$mysql_host -P$mysql_port -u$mysql_user -p$mysql_password -B mysql_backup_test> $backup_dir/mysql_backup_test-$backup_time.sql

31flag=`echo $?`

32if [ $flag == "0" ];then

33        echo "database mysql_backup_test success backup to $backup_dir/mysql_backup_test-$backup_time.sql.gz"

34else

35        echo "database mysql_backup_test backup fail!"

36fi

37

38# 删除过期数据

39if [ "$expire_backup_delete" == "ON" -a  "$backup_location" != "" ];then

40        `find $backup_location/ -type f -mtime +$expire_days | xargs rm -rf`

41        echo "Expired backup data delete complete!"

42fi

43

44

以上是数据库备份脚本.

编辑定时任务:

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1crontab -e

2# 添加定时任务(每天12:50以及23:50执行备份操作)

350 12,23 * * * cd /home/app/jinxd/;sh mysql_backup_test_backup.sh >> log.txt 2>>log.txt

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