在Red Hat Enterprise Linux平臺，利用MySQL主從同步原理，實現MySQL雙向同步
MySQL版本：5.5.28
操作系統：RHEL 5.8 32bit
Server1：192.168.1.1
配置：my.cnf
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server-id = 1
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binlog-do-db = testdb
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binlog-ignore-db = mysql
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log-slave-updates
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replicate-do-db = testdb
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replicate-ignore-db = mysql
同步testdb數據庫，這里不對mysql數據庫進行同步
新增同步用戶：
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grant replication slave on *.* to slaveuser@192.168.1.2 identified by '123456';
啟動Sever1;
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service mysql start
查看MySQL同步binlog文件名以及pos值：
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show master status;
Server2：192.168.1.2
配置：my.cnf
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server-id = 2
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binlog-do-db = testdb
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binlog-ignore-db = mysql
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log-slave-updates
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replicate-do-db = testdb
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replicate-ignore-db = mysql
與Sever1配置基本相同，只是server-id不同，而且不能相同，另外記得在[mysqld]配置區域里配置開啟二進制日志記錄：log-bin = mysql-bin
新增同步用戶：
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grant replication slave on *.* to slaveuser@192.168.1.1 identified by '123456';
啟動Server2：
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service mysql start
配置同步：
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mysql>change master to master_host='192.168.1.1',
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mysql>master_user='slaveuser',
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mysql>master_password='123456',
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mysql>master_port=3306,
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mysql>master_log_file='mysql-bin.000020',
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mysql>master_log_pos=107;
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mysql>slave start;
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mysql>show slave statusG;
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