SageMaker canvas 连接Redshift失败?

【以下的问题经过翻译处理】 尝试在SageMaker Canvas上添加Redshift连接以导入数据

• 集群标识：redshift-cluster-1
• 数据库名称：dev
• 数据库用户：awsuser
• 卸载IAM角色：my-reshift-role
• 连接名称：redshift
• 类型：IAM

my-reshift-role信任关系信任“redshift.amazonaws.com”和“sagemaker.amazonaws.com”

期望结果：成功创建连接

实际结果：RedshiftCreateConnectionError Unable to validate connection. An error occurred when trying to list schema from Redshift