Linux下MySQL定时按日期备份数据
一、使用mysql内置命令 mysqldump Usage: mysqldump [OPTIONS] database [tables]mysqldump [OPTIONS] --databases [OPTIONS] DB
一、使用mysql内置命令 mysqldump
Usage:
mysqldump [OPTIONS] database [tables]
mysqldump [OPTIONS] --databases [OPTIONS] DB1 [DB2 DB3...]
mysqldump [OPTIONS] --all-databases [OPTIONS]
可以看到能备份全部的数据库,指定的数据库,指定数据库中的表
mysqldump -uUsername -pPassword Database > /var/backup/mysql/database.sql
二、按日期备份
mysqldump -uUsername -pPassword Database > /var/backup/mysql/database-`date +%Y%m%d`.sql
`date +%Y%m%d` 利用了shell的知识,,先执行,得到格式化的日期
vim /var/backup/backup-mysql.sh
把上面的内容存到文件中
chmod +x backup-mysql.sh
加上可执行权限
三、定时备份
使用系统的crontab
crontab -e
# m h dom mon dow command
0 3 * * * /var/backup/backup-mysql.sh
时间的格式是
分 时 日 月 周
上面的例子是指定每天3点备份一次数据库
提高:
当然,还可以加上一些更好的功能,如
备份后的文件压缩一下,这个很简单
只保留最近xx天的备份文件,这个要稍微复杂一点点
使用mysql二进制增量备份……
2012/03/15日更新 【Linux公社 】
以下是shell脚本:

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