启动从时报错：

mysql> start slave;

ERROR 1872 (HY000): Slave failed to initialize relay log info structure from the repository

reset slave之后可以：

mysql> reset slave;

Query OK, 0 rows affected (0.00 sec)

mysql> change master to master_host='192.168.118.161', master_user='song', master_password='song', master_log_file='1.000016', master_log_pos=430;

Query OK, 0 rows affected, 2 warnings (0.04 sec)

mysql> start slave;

Query OK, 0 rows affected (0.02 sec)

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Slave failed to initialize relay log info structure from the repository