mysql设置主从复制

在my.cnf确认主和从的server_id不一致

主：

show master status;

+------------------+----------+--------------+------------------+-----------------------------------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-----------------------------------------------+
| mysql-bin.000048 | 104783 | | | 9a9bcbe6-d459-11e9-82f8-068c8400044e:1-184780 |
+------------------+----------+--------------+------------------+-----------------------------------------------+

从：

stop slave;reset slave;
change master to master_host='192.168.1.20', master_port=3307, master_user='mysql_user', master_password='123456', master_log_file='mysql-bin.000048', master_log_pos=104783;
start slave; 
show slave status\G

注意：

#需要master_log_file和master_log_pos需要和在主中查询到的数据一致

#  reset slave;执行之后，需要重启mysql才能真正清空配置信息