The same uuid is configured for mysql master and slave databases, and the uuid is configured for mysql master and slave databases.

The same uuid is configured for mysql master and slave databases, and the uuid is configured for mysql master and slave databases.

When configuring the mysql Master/Slave, because the mysql directory is copied, The Master/Slave mysql uuid is the same and Slave_IO cannot be started. The error message is as follows:

The slave I/O thread stops because master and slave have equal MySQL server uuuids; these UIDs must be different for replication to work.

Solution: Modify the uuid value in the auto. cnf file in the mysql data DIRECTORY to make the two mysql instances different. Then, restart the mysql service.