Create an IAM role with full access to all S3 buckets and assign it to the Glue crawlers.

Create an IAM role with the minimum required permissions for the Glue crawlers to access the specific S3 buckets and perform ETL operations, and assign it to the Glue crawlers.

Modify the S3 bucket policy to allow access from the Glue service.

Use the root account credentials to configure the Glue crawlers to access the S3 data.