1.停掉从库的主从复制。

stop slave;

2.将主库的数据导出，导出时加上--master-data=2

mysqldump

3.在从库上导入主库导出的数据。

reset slave all;

reset master;

source /opt/JZJ_v1.0_2020-06-12_21_31.sql;

4.在从库上change master

change master to master_host='10.1.8.73',master_port=3307,master_user='mxxrs',master_password='JZJxxxxxxxxxx',master_auto_position=1;

5.开启主从复制。

start slave;

6.查看主从复制状态

mysql> show slave status\G

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 10.1.8.73

Master_User: mirrors

Master_Port: 3307

Connect_Retry: 60

Master_Log_File: mysql-bin.000018

Read_Master_Log_Pos: 1559390

Relay_Log_File: jzj-mysql02-relay-bin.000002

Relay_Log_Pos: 1559563

Relay_Master_Log_File: mysql-bin.000018

Slave_IO_Running: Yes # yes

Slave_SQL_Running: Yes # yes

Replicate_Do_DB:

Replicate_Ignore_DB:

Replicate_Do_Table:

Replicate_Ignore_Table:

Replicate_Wild_Do_Table:

Replicate_Wild_Ignore_Table:

Last_Errno: 0

Last_Error:

Skip_Counter: 0

Exec_Master_Log_Pos: 1559390

Relay_Log_Space: 1559776

Until_Condition: None

Until_Log_File:

Until_Log_Pos: 0

Master_SSL_Allowed: No

Master_SSL_CA_File:

Master_SSL_CA_Path:

Master_SSL_Cert:

Master_SSL_Cipher:

Master_SSL_Key:

Seconds_Behind_Master: 0

Master_SSL_Verify_Server_Cert: No

Last_IO_Errno: 0

Last_IO_Error:

Last_SQL_Errno: 0

Last_SQL_Error:

Replicate_Ignore_Server_Ids:

Master_Server_Id: 149

Master_UUID: 83f6a86d-98dd-11ea-a7c0-1418774940cb

Master_Info_File: mysql.slave_master_info

SQL_Delay: 0

SQL_Remaining_Delay: NULL

Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates

Master_Retry_Count: 86400

Master_Bind:

Last_IO_Error_Timestamp:

Last_SQL_Error_Timestamp:

Master_SSL_Crl:

Master_SSL_Crlpath:

Retrieved_Gtid_Set: 83f6a86d-98dd-11ea-a7c0-1418774940cb:215981-217531

Executed_Gtid_Set: 83f6a86d-98dd-11ea-a7c0-1418774940cb:1-217531

Auto_Position: 1

Replicate_Rewrite_DB:

Channel_Name:

Master_TLS_Version:

1 row in set (0.00 sec)