机器重启以后，主从出现了问题，具体报错信息：
Slave failed to initialize relay log info structure from the repository
解决方案：
mysql> start slave; ERROR 1872 (HY000): Slave failed to initialize relay log info structure from the repository mysql> reset slave; Query OK, 0 rows affected (0.04 sec) mysql> start slave IO_THREAD; Query OK, 0 rows affected (0.07 sec) mysql> stop slave IO_THREAD; Query OK, 0 rows affected (0.01 sec) mysql> reset slave; Query OK, 0 rows affected (0.10 sec) mysql> start slave; Query OK, 0 rows affected (0.20 sec) mysql> show slave status\G
MySQL复制报错（Slave failed to initialize relay log info structure from the repository）
原文：https://www.cnblogs.com/-mrl/p/13266269.html