红旗Linux案例精选：使用Amanda ZRM备份远程MySQL数据库-Mysql Tutorial-php.cn

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红旗Linux案例精选：使用Amanda ZRM备份远程MySQL数据库

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Jun 07, 2016 pm 04:54 PM

本文写道最后的时候，我才发现ZRM for MySQL的一个致命问题，就我目前的理解和测试来看，它恢复数据的时候是采取覆盖的方式，举个

本文写道最后的时候，我才发现ZRM for MySQL的一个致命问题，就我目前的理解和测试来看，它恢复数据的时候是采取覆盖的方式，举个例子，假定某台数据库服务器上有两个数据库test1,test2，你备份了这两个数据库，某一天，test2数据库里的某一个表坏了，那么它无法做到仅仅只是恢复损坏的表，甚至无法做到仅仅恢复test2，而是直接把test1,test2都恢复。那这绝对是一个噩梦。
但愿我目前的理解是错误的，只是我实在找不到控制恢复粒度的地方。下面的文字就当闲着无聊看看吧。

Zmanda Recovery Manager(ZRM)提供了备份MySQL数据库的能力，，并且支持两种备份模式：逻辑备份和裸备份，有关详细的介绍，可以看官方的介绍。下面给出一个备份的实例。

先介绍备份的环境，如果大家看过之前的那篇Amanda集中备份实例，那么大概就知道是什么样的一个网络架构了，承接上文，这里备份服务器还是cp1.domain.com，MySQL数据库分别运行在cp2.domain.com和cp3.domain.com上，需要备份其所有的数据库。

一、服务端的安装和配置
首先从官方站点下载对应系统的服务端程序，然后安装。注意：服务端与perl-DBI,MySQL-client程序库有依赖关系，安装之前先安装这个两个包。

安装完后,/etc/mysql-zrm/是其配置文件的所在地。/etc/mysql-zrm/目录下有一个mysql-zrm.conf文件，这是最重要的配置文件。在/etc/mysql-zrm/目录下，你可以创建一些目录，每一个目录就是一个备份集的名称，我这里为了直观，采取了主机名的方式来创建备份集

cp2.domain.com,cp3.domain.cometc

/etc/mysql-zrm/mysql-zrm.conf可以做为全局配置文件，针对每一台需要备份的数据库的不同，可以在备份集目录里的mysql-zrm.conf再定义，这里的定义可以覆盖全局定义。

首先，我们把一些全局定义信息配置在/etc/mysql-zrm/mysql-zrm.conf文件里

#cat /etc/mysql-zrm/mysql-zrm.conf backup-level=0 backup-mode=logical backup-type=regular destination=/yourpath/db compress=1 compress-plugin==1 encrypt-plugin="/usr/share/mysql-zrm/plugins/encrypt.pl" decrypt-option="-d" all-databases=="securepassword" mailto="your＠domain.com"

上面的配置信息应该比较直观。
然后配置每一台MySQL服务器的一些特有参数

=/yourpath/db =/yourpath/db

创建加密的密码文件

root@cp1:~# chmod 700 /etc/mysql-zrm/.passphrase

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