一、 Slave failed to initialize relay log info structure from the repository
解决方法：
1、reset slave;
2、CHANGE MASTER TO...
3、start slave;
二、 Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file'
解决方法：检查清楚CHANGE MASTER TO语句的MASTER_LOG_FILE有没有错。。。。。。