数据库版本:5.1.24。 4.x版本的数据库请自己去找相应文档。 英文版文档的原文地址:http://dev.mysql.com/doc/refman/5.1/en/re
数据库版本:5.1.24。
4.x版本的数据库请自己去找相应文档。
英文版文档的原文地址:
1 在主服务器(master)正常运行的情况下,创建一个专门用来同步数据的用户。
CREATE USER ‘用户名’@'从服务器IP’ IDENTIFIED BY ‘密码’;
GRANT REPLICATION SLAVE ON *.* TO ‘用户名’@'从服务器IP’;
这个用户名和密码(明文)以后会自动保存到从服务器上的master.info里面。
2 修改主服务器上面的my.cnf
[mysqld]
log-bin=mysql-bin
server-id=1
这个镜像系统中的每一台mysql主机都需要一个不同的server-id (1~2的32次方-1)
PS:如果使用了innodb, 还需要加上:
innodb_flush_log_at_trx_commit=1
sync_binlog=1
PS again: 主服务配置文件里面一定不能有 skip-networking
PS3: 主服务器防火墙开放3306端口给从服务器。
然后重新启动主服务器的mysqld,,使配置生效。
3 获取主服务器状态信息并复制数据。
3.1 获取主服务器二进制日志的座标
在主服务器上运行一个mysql客户端,
mysql> FLUSH TABLES WITH READ LOCK;
这会flush所有的数据表,并且阻塞所有的写入操作。
对于innodb类型的表,COMMIT 语句也会阻塞。
不要退出这个mysql客户端,否则这个read lock会失效。
在主服务器上重新打开一个mysql客户端,
mysql > SHOW MASTER STATUS;
+—————+———-+————–+——————+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+—————+———-+————–+——————+
| mysql-bin.003 | 73 | test | manual,mysql |
+—————+———-+————–+——————+
File 字段显示的是二进制日志的文件名
Position 显示的是此文件中的偏移量。 抄下来这二个数据。
They represent the replication coordinates at which the slave should begin processing new updates from the master.

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