Amazon S3 Permission problem - How to set permissions for all files at once?

Question

I have uploaded some files using the Amazon AWS management console.

I got an HTTP 403 Access denied error. I found out that I needed to set the permission to view.

How would I do that for all the files on the bucket?

I know that it is possible to set permission on each file, but it's time-consuming when having many files that need to be viewable for everyone.

Answer 1

I suggest that you apply a bucket policy¹ to the bucket where you want to store public content. This way you don't have to set ACL for every object. Here is an example of a policy that will make all the files in the bucket mybucket public.

{     "Version": "2008-10-17",     "Id": "http better policy",     "Statement": [         {             "Sid": "readonly policy",             "Effect": "Allow",             "Principal": "*",             "Action": "s3:GetObject",             "Resource": "arn:aws:s3:::mybucket/sub/dirs/are/supported/*"         }     ] } 

That * in "Resource": "arn:aws:s3:::mybucket/sub/dirs/are/supported/*" allows recursion.

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¹ Note that a Bucket Policy is different than an IAM Policy. (For one you will get an error if you try to include Principal in an IAM Policy.) The Bucket Policy can be edit by going the root of the bucket in your AWS web console and expanding Properties > Permissions. Subdirectories of a bucket also have Properties > Permissions, but there is no option to Edit bucket policy

Answer 2

You can select which directory you want it to be public.

Press on "more" and mark it as public; it will make the directory and all the files to be accessible as public.