5、查看主数据库状态
  mysql> show master status;
  +------------------+----------+--------------+------------------+
  | File  | Position | Binlog_Do_DB | Binlog_Ignore_DB |
  +------------------+----------+--------------+------------------+
  | mysql-bin.000002 | 263 |  |   |
  +------------------+----------+--------------+------------------+
  6、配置从数据库
  mysql> change master to
  -> master_host='192.168.0.202',
  -> master_user='sync',
  -> master_password='1234.com',
  -> master_log_file='mysql-bin.000002',
  -> master_log_pos=263;
  #Log和pos是master上随机获取的。这段也可以写到my.cnf里面。
  7、启动slave同步进程并查看状态
  mysql> start slave;

  其中Slave_IO_Running 与 Slave_SQL_Running 的值都必须为YES,才表明状态正常。
  8、验证主从同步
  在主mysql创建数据库abc,再从mysql查看已经同步成功!
  mysql> create database abc;
  mysql> show databases;
  +--------------------+
  | Database   |
  +--------------------+
  | information_schema |
  | abc    |
  | mysql    |
  | performance_schema |
  | test    |
  +--------------------+
  在slave启动报错:
  “Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: ‘Could not find first log file name in binary log index file’”
  解决:报错的原因主要是slave设置master的二进制文件名或pos值不对应!
  先flush logs;清空日志,在查看下主数据库的状态 show master status;看下日志文件名字和position值;
  再在slave中,执行:CHANGE MASTER TO MASTER_LOG_FILE=‘二进制日志名’,MASTER_LOG_POS=值;
  后启动同步进程:start slave;