Home Database Mysql Tutorial Windows服务器下MySql数据库单向主从备份详细实现步骤分享

Windows服务器下MySql数据库单向主从备份详细实现步骤分享

Jun 07, 2016 pm 06:06 PM

将主服务器中的MySql数据库同步到从服务器中,使得对主服务器的操作可以即时更新到从服务器,避免主服务器因环境或者网络异常一时无法使用,达到备份效果,这篇文章整理的确实挺详细的

一、目的:将主服务器中的MySql数据库同步到从服务器中,使得对主服务器的操作可以即时更新到从服务器,避免主服务器因环境或者网络异常一时无法使用,达到备份效果。

二、环境:

主从服务器操作系统、数据库版本均相同,具体如下:
操作系统:Windows 2003 Server R2
MySql数据库版本:5.0.51b
主服务器(用A代替)IP地址:192.168.4.100
从服务器(用B代替)IP地址:192.168.4.101

三、配置过程:

1、在A创建远程访问备份账户。
在A的MySql数据库中建立一个备份账户,命令如下:
代码如下:
  mysql> GRANT REPLICATION SLAVE,RELOAD,SUPER ON *.* TO july@'192.168.4.101' IDENTIFIED BY '123456';
  mysql> Flush privileges;
  mysql> Quit;


语句解释:

第一句中*.*表示所有数据库,如果要对某个数据库备份的话,假如数据库名称为some,则要换成some.*,其中 TO july@'192.168.4.101',july为远程访问用户名,IP地址为远程访问IP,BY '123456'中123456为远程访问密码;
第二句语句执行后使得远程访问用户创建生效;

执行说明:

执行上述语句后,若要看远程访问用户是否已经创建成功,执行以下语句:
  mysql> use mysql;
  mysql> select host,user from user;
用户列表中多了一条
+------------------------------------+------------------+
|host |user        |
+------------------------------------+------------------+
|192.168.4.101 |july |
+------------------------------------+------------------+
至此,说明远程访问用户已经创建成功。
2、关闭A的MySql服务并拷贝数据到B。
关闭A的Mysql服务,将A中的数据拷贝到B中,使得A、B服务器初始数据完全相同,并且在同步备份之前禁止对服务器中进行数据库写入操作,以保证A、B服务器的初始数据完全相同。
3、修改A中my.ini配置信息
打开my.ini文件,在[mysqld]下添加以下内容(#内容为注释):
  # server-id:A服务器的ID值
  server-id=10
  #log-bin:二进制变更日志
  log-bin=c:\log/log-bin.log
4、重启A服务器。
5、关闭B服务器,对B的my.ini进行相关配置
此处需要注意:
由于设置了slave的配置信息,mysql在数据库data目录下生成master.info,所以如有要修改相关slave的配置要先删除该文件,否则修改的配置不能生效。
打开B的my.ini配置文件,在[mysqld]中添加以下内容:
  #B服务器ID值
  server-id=11
  #远程访问IP地址
  master-host=192.168.4.100
  #远程访问用户名
  master-user=july
  #远程访问用户密码
  master-password=123456
  #主服务器端口(默认为3306,此处要注意主服务器端口是否因为防火墙被禁止)
  master-port=3306
  #同步时间间隔为60秒
  master-connect-retry=60
  #设置要同步备份的数据库,此处数据库为some
  replicate-do-db=some
6、重启B服务器,到此已完成主从备份,如果有错误,可以通过mysql_error.log进行查看。

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