MySQL日常排错

Posted 2020-10-11 Jadear

1、mysql从库 Failed to open the relay log

在配置MySQL主从复制的过程中，遇到了一个问题，提示：Could not initialize master info structure; more error messages can be found in the MySQL error log。

打开log日志发现是因为如下的原因：

111121 15:15:22 [ERROR] Failed to open the relay log ‘./dong-relay-bin.000002’ (relay_log_pos 1067)
111121 15:15:22 [ERROR] Could not find target log during relay log initialization

可以按照下面的方法解决：

1. 在mysql日志目录下删除所有的relay logs，包括hostname-relay-bin.XXX, hostname-relay-bin.index and relay-log.info等等
2. 重启mysql服务