org.pentaho.di.core.exception.KettleDatabaseException: 

Error occurred while trying to connect to the database

Error connecting to database: (using class org.gjt.mm.mysql.Driver)

Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

org.pentaho.di.core.exception.KettleDatabaseException: 

Error occurred while trying to connect to the database

Error connecting to database: (using class org.gjt.mm.mysql.Driver)

Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

驱动我也下载呢 我的mysql版本是：8.0.28