一前提系统环境:centos6.1脚本作用:备份指定服务器上的指定数据库,并通过scp传送到另一台备份主机,然后发送备份是否成功邮件到指定邮箱思路:首先在备份脚本
一 前提
系统环境:centos6.1
脚本作用:备份指定服务器上的指定数据库,并通过scp传送到另一台备份主机,然后发送备份是否成功邮件到指定邮箱
思路:首先在备份脚本中把备份报告导出为一个db_backup.log文件,然后邮件脚本会把这个log内容作为邮件内容发送给指定用户,也就实现了邮件通知
说明:如果需要备份到远程主机,需要首先做好ssh密钥认证,scp要使用到
二 备份脚本
备份脚本用法:如果需要备份某个数据库,在脚本后面添加一条备份命令,像下面这样
backup_db 10.90.5.50 dbname mysql 123456 innodb
函数名 mysql所在IP 所要备份的数据库名 连接数据库用户名 密码 数据库引擎类型
三 发送邮件脚本

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Best practices for handling string data types and indexes in MySQL include: 1) Selecting the appropriate string type, such as CHAR for fixed length, VARCHAR for variable length, and TEXT for large text; 2) Be cautious in indexing, avoid over-indexing, and create indexes for common queries; 3) Use prefix indexes and full-text indexes to optimize long string searches; 4) Regularly monitor and optimize indexes to keep indexes small and efficient. Through these methods, we can balance read and write performance and improve database efficiency.


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