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Redshift unload set bucket owner12/10/2023 ![]() From the account of the S3 bucket, open the IAM console.Ģ. Resolutionįrom the account of the S3 bucket, create an IAM role with permissions to the bucket:ġ. Important: This resolution doesn't apply to Amazon Redshift clusters or S3 buckets that use server-side encryption with AWS Key Management Service (AWS KMS). From the Amazon Redshift cluster, run the UNLOAD command using the cluster role and bucket role. ![]() Update the bucket role to grant bucket access, and then create a trust relationship with the cluster role.Ĥ. From the account of the Amazon Redshift cluster, create another IAM role with permissions to assume the bucket role. From the account of the S3 bucket, create an IAM role with permissions to the bucket. Follow these steps to set up the Amazon Redshift cluster with cross-account permissions to the bucket:ġ. To get access to the data files, an AWS Identity and Access Management (IAM) role with cross-account permissions must run the UNLOAD command again. Therefore, when Amazon Redshift data files are put into your bucket by another account, you don't have default permission for those files. This is true even when the bucket is owned by another account. You can use a bucket policy to require that any objects uploaded to your bucket by another account must set the ACL as "bucket-owner-full-control".By default, an S3 object is owned by the AWS account that uploaded it. Require that objects grant the bucket owner full control If the object is already in a bucket in another account, then the object owner can grant the bucket owner access with a put-object-acl command: aws s3api put-object-acl -bucket destination_DOC-EXAMPLE-BUCKET -key keyname -acl bucket-owner-full-control Grant access after the object is added to the bucket or- aws s3 cp s3://source_DOC-EXAMPLE-BUCKET/myobject s3://destination_DOC-EXAMPLE-BUCKET/ -acl bucket-owner-full-controlįor a copy operation of multiple objects, the object owner can run this command: aws s3 cp s3://source_DOC-EXAMPLE-BUCKET/ s3://destination_DOC-EXAMPLE-BUCKET/ -acl bucket-owner-full-control -recursive Note: If you receive errors when running AWS Command Line Interface (AWS CLI) commands, make sure that you’re using the most recent AWS CLI version.įor a copy operation of a single object, the object owner can run one of these commands: aws s3api copy-object -bucket destination_DOC-EXAMPLE-BUCKET -key source_DOC-EXAMPLE-BUCKET/myobject -acl bucket-owner-full-control Grant access during a put or copy operationĭuring a put or copy operation, the object owner can specify that the ACL of the object gives full control to the bucket owner.įor a put operation, the object owner can run this command: aws s3api put-object -bucket destination_DOC-EXAMPLE-BUCKET -key dir-1/my_2 -body my_2 -acl bucket-owner-full-control If you can't disable ACLs on your bucket, then use the following options to grant access to objects in your bucket. To disable ACLs on for your bucket and to take ownership of all objects in the bucket, run the following command: aws s3api put-bucket-ownership-controls -bucket example-bucket -ownership-controls 'Rules=' If there are several ACLs on an object or bucket, review and update your bucket and IAM policies to grant the required permissions. Important: Before you disable any ACLs on existing buckets, assess the potential impact. It's a best practice that bucket owners use the bucket owner enforced setting on new and existing buckets, while managing permissions through IAM and bucket policies. (Disabling the bucket owner enforced setting on an existing bucket re-enables any buckets and object ACLs that were previously applied.) If you enable the bucket owner enforced setting on an existing bucket, then note that you can also disable it at any time. Also, only objects uploaded to the bucket with a bucket-owner-full-control ACL are owned by the bucket owner. When the bucket owner preferred setting is enabled, ACLs are still enabled. You can also set S3 Object Ownership on existing buckets by either enabling the bucket owner enforced setting or bucket owner preferred setting. Additionally, any ACLs on a bucket and its objects are disabled. When the bucket owner enforced setting is enabled, bucket owners become the object owners for all objects inside the bucket. By default, all newly created S3 buckets have the bucket owner enforced setting enabled. ![]() With S3 Object Ownership, bucket owners can now manage the ownership of any objects uploaded to their buckets. Otherwise, the bucket owner would be unable to access the object. For these existing buckets, an object owner had to explicitly grant permissions to an object (by attaching an access control list). For existing Amazon S3 buckets with the default object ownership settings, the object owner is the AWS account which uploaded the object to the bucket.
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