背景： zabbix 數據庫遷移，搭建主從，主是5.6.25，從是5.7.15，流式備份應用 redo.log 之後，change master 和reset slave 時報出如下錯誤

mysql> CHANGE MASTER TO
    ->   MASTER_HOST=‘192.168.40.129‘,
    ->   MASTER_USER=‘repl‘,
    ->   MASTER_PASSWORD=‘repl_123‘,
    ->   MASTER_PORT=3306,
    ->   MASTER_LOG_FILE=‘mysql-bin.000005‘,       
    ->   MASTER_LOG_POS=749,
    ->   MASTER_AUTO_POSITION=0;
ERROR 1794 (HY000): Slave is not configured or failed to initialize properly. You must at least set --server-id to enable either a master or a slave. Additional error messages can be found in the MySQL error log.　　
 

原因：從 5.6.25 版本使用 innobackupex 備份，在 5.7.15 版本中應用恢復，ibd系統表需要重建

解決步驟：

1、drop 備份的 ibd表

use mysql
drop table slave_master_info;
drop table slave_relay_log_info;
drop table slave_worker_info;
drop table innodb_index_stats;
drop table innodb_table_stats;

2、重建

mysql> source /usr/local/mysql/share/mysql_system_tables.sql
Query OK, 0 rows affected, 1 warning (0.00 sec)　
 

3、重啟數據庫

[root@zero02 data]# /etc/init.d/mysqld restart
Shutting down MySQL..                                      [  OK  ]
Starting MySQL..                                           [  OK  ]

　 至此，問題解決，登陸數據庫，重新 change master to 即可！

MySQL 跨版本主從復制時報錯：ERROR 1794 (HY000): Slave is not configured or failed to initialize properly.