当我们希望通过MySQL客户端免密访问不同的数据源时，推荐使用mysql_config_editor工具。
实践案例如下：
[xuej@localhost ~]$ mysql_config_editor set --login-path=order_db --host=rm-uf63iqp0u65o69qf6.mysql.rds.aliyuncs.com --user=user_sale_rw --password Enter password: [xuej@localhost ~]$ mysql --login-path=order_db Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1554067 Server version: 5.7.32-log Source distribution Copyright (c) 2000, 2022, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | sale_service_sit | +--------------------+ 3 rows in set (0.02 sec)