【MySQL】Could not initialize master info structure

对一个M-M 架构的mysql 重新搭建双master ,出现了两个报错：

ERROR 29 (HY000): File '/home/mysql/data3306/slave-relay.066538' not found (Errcode: 2)

ERROR 1201 (HY000): Could not initialize master info structure;

(none)@3306 14:34:29>CHANGE MASTER TO

    -> MASTER_HOST='10.1.147.164',

    -> MASTER_USER='replicator',

    -> MASTER_PASSWORD='yangql',

    -> MASTER_LOG_FILE='mysql-bin.000002',

    -> MASTER_LOG_POS=106;

ERROR 29 (HY000): File '/home/mysql/data3306/slave-relay.066538' not found (Errcode: 2)

查看 slave-relay-log.index 文件

[root@linux11-02 data3306]#cat slave-relay-log.index 

/home/mysql/data3306/slave-relay.066537

/home/mysql/data3306/slave-relay.066538

/home/mysql/data3306/slave-relay.066539

/home/mysql/data3306/slave-relay.066540

/home/mysql/data3306/slave-relay.066541

/home/mysql/data3306/slave-relay.066542

/home/mysql/data3306/slave-relay.066543

/home/mysql/data3306/slave-relay.066544

/home/mysql/data3306/slave-relay.066545

data_dir 目录并不存在这些relay.log file 因为要重新创建，所以清除slave-relay-log.index 之后 重新指定 master

(none)@3306 14:37:36>CHANGE MASTER TO

    -> MASTER_HOST='10.1.147.164',

    -> MASTER_USER='replicator',

    -> MASTER_PASSWORD='yangql',

    -> MASTER_LOG_FILE='mysql-bin.000002',

    -> MASTER_LOG_POS=106;

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

(none)@3306 14:37:42>

出现上述报错的原因是因为已经存在一个86KB的文件master.info(之前已经存在的文件)，该文件导致mysqld提示复制无法初始化主数据库服务器的信息，直接删除该文件：

[root@linux11-02 data3306]# rm master.info

rm: remove regular file `master.info'? y

[root@linux11-02 data3306]# rm slave-relay-log.info 

rm: remove regular empty file `slave-relay-log.info'? y

[root@linux11-02 data3306]# 

再执行CHANAGE MASTER TO 命令，复制搭建成功，

(none)@3306 14:50:50>CHANGE MASTER TO

    -> MASTER_HOST='10.1.147.164',

    -> MASTER_USER='replicator',

    -> MASTER_PASSWORD='yangql',

    -> MASTER_LOG_FILE='mysql-bin.000002',

    -> MASTER_LOG_POS=106;

Query OK, 0 rows affected (0.26 sec)

且生成了记录主数据库服务器信息的master.info和 slave-relay-log.info文件。