ERROR 1201 (HY000): Could not initialize master

环境，由于工作需要在测试机上先停掉，mysql-master,在slave端: 


mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State:
                  Master_Host: 192.168.0.10
                  Master_User: replication
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: updatelog.000003
          Read_Master_Log_Pos: 1291
               Relay_Log_File: sunss-2-relay-bin.000003
                Relay_Log_Pos: 1436
        Relay_Master_Log_File: updatelog.000003
             Slave_IO_Running: No          *********没有同步********
            Slave_SQL_Running: No

重新设定同步状态：

mysql>
mysql> slave stop;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> change master to master_host='192.168.0.10', master_user='replication',master_password='123456',master_log_file='updatelog.000004',master_log_pos=106;
ERROR 1201 (HY000): Could not initialize master info structure; more error messages can be found in the MySQL error log
mysql> slave stop;
Query OK, 0 rows affected, 1 warning (0.00 sec)

出现了题目中的错误

解决办法： 

mysql> slave stop;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> reset slave;

Query OK, 0 rows affected,(0.00 sec)

 

mysql> change master to master_host='192.168.0.10', master_user='replication',master_password='123456',master_log_file='updatelog.000004',master_log_pos=106;
Query OK, 0 rows affected (0.05 sec)

mysql> slave start;
Query OK, 0 rows affected (0.00 sec)