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MySQL3.23.15后版本设置数据同步

Jun 07, 2016 pm 04:05 PM
mysql Synchronize data Version set up

mysql从3.23.15版本以后提供数据库复制功能。利用该功能可以实现两个数据库同步,主从模式,互相备份模式的功能。数据库同步复制功能的设置都在mysql的设置文件中体现。mysql的配置文件(一般是my.cnf),在unix环境下在/etc/mysql/my.cnf 或者在mysql用户的

mysql从3.23.15版本以后提供数据库复制功能。利用该功能可以实现两个数据库同步,主从模式,互相备份模式的功能。数据库同步复制功能的设置都在mysql的设置文件中体现。mysql的配置文件(一般是my.cnf),在unix环境下在/etc/mysql/my.cnf 或者在mysql用户的home目录下的my.cnf。

Window环境中,如果c:根目录下有my.cnf文件则取该配置文件。当运行mysql的winmysqladmin.exe工具时候,该工具会把c:根目录下的my.cnf 命名为mycnf.bak。并在winnt目录下创建my.ini。mysql服务器启动时候会读该配置文件。所以可以把my.cnf中的内容拷贝到my.ini文件中,用my.ini文件作为mysql服务器的配置文件。
设置方法

设置范例环境:
操作系统:window2000 professional
mysql:4.0.4-beta-max-nt-log
a ip:10.10.10.22
b ip:10.10.10.53
a:设置
1.增加一个用户最为同步的用户帐号:grant file on *.* to backup@''10.10.10.53'' identified by ‘1234’
2.增加一个数据库作为同步数据库:create database backup
b:设置

1.增加一个用户最为同步的用户帐号:grant file on *.* to backup@''10.10.10.22'' identified by ‘1234’
2.增加一个数据库作为同步数据库: create database backup
主从模式:a->b
a为master ,修改a mysql的my.ini文件。在mysqld配置项中加入下面配置:server-id=1log-bin#设置需要记录log 可以设置log-bin=c:mysqlbakmysqllog 设置日志文件的目录,#其中mysqllog是日志文件的名称,mysql将建立不同扩展名,文件名为mysqllog的几个日志文件。binlog-do-db=backup #指定需要日志的数据库

重起数据库服务
用show master status 命令看日志情况。
b为slave,修改b mysql的my.ini文件。在mysqld配置项中加入下面配置:server-id=2master-host=10.10.10.22master-user=backup #同步用户帐号master-password=1234master-port=3306master-connect-retry=60 预设重试间隔60秒replicate-do-db=backup 告诉slave只做backup数据库的更新
重起数据库
用show slave status看同步配置情况。
注意:由于设置了slave的配置信息,mysql在数据库目录下生成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。
双机互备模式
如果在a加入slave设置,在b加入master设置,则可以做b->a的同步。在a的配置文件中 mysqld 配置项加入以下设置:
master-host=10.10.10.53master-user=backupmaster-password=1234replicate-do-db=backupmaster-connect-retry=10
在b的配置文件中 mysqld 配置项加入以下设置:log-bin=c:mysqllogmysqllogbinlog-do-db=backup
注意:当有错误产生时*.err日志文件。同步的线程退出,当纠正错误后要让同步机制进行工作,运行slave start 。重起ab机器,则可以实现双向的热备。

测试:向b批量插入大数据量表aa(1872000)条,a数据库每秒钟可以更新2500条数据。(责任编辑:铭铭)


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