mysql报错1872: Slave failed to initialize relay log info structure from the repository

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

在一台主机上增加一个slave，启动的时候报

[ERROR] Slave SQL: Slave failed to initialize relay log info structure from the repository, Error_code: 1872

原因：检查my.cnf，原来没指定relay_log，mysql默认产生的relay_log名被该server上的另一个mysql slave占用了。

解决方法：

1 2	1.在my.cnf中添加 relay_log=/db/mysql56/logs/relay_98_3326

1 2 3 4 5 6 7 8 9 10

2. reset slave mysql>reset slave mysql>change master to master_host='192.168.0.38', master_user='repl', master_password='slave', master_port=3306, master_log_file='mysql-bin.001229', master_log_pos=15970007; mysql>start slave;