mysql Could not initialize master info structure;

ERROR 1201 (HY000): Could not initialize master info structure; more error messages can be found in the MySQL error log

解决办法reset slave;

change master to master_host='221.4.223.112', master_user='sync_user', master_password='mysql2012',MASTER_LOG_FILE='mysql-bin.000185',
MASTER_LOG_POS=4174698;

start slave;