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S3 ACL permissions needed for public upload

This is part of the Semicolon&Sons Code Diary - consisting of lessons learned on the job. You're in the AWS category.

Last Updated: 2024-11-21

AWS s3 needs extra permissions for in the ACL setting

I tried uploading a file to s3 from Ruby with the AWS library. I ran obj.upload_file(file, {acl: 'public_read'}. It failed. My IAM user needed a policy expansion with these added:

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