Copying Files from Ec2 to S3

Question

I am copying files from the ec2 server(Ubuntu) to s3 using the command- aws s3 sync --no-guess-mime-type "/opt/mydir/" "s3://copy-test".
Files are getting copied but the permissions are not getting preserved like root gets changed to user when I fetch these files to another ec2 instance. Am I missing something or the permissions can't be preserved if I use the CLI commands?

Thanks.

Answer

The other answer is correct (S3 isn't a Linux filesystem) and the AWS-supplied CLI won't do what you want - but there is a twist here.

Metadata can be stored with objects in S3. That metadata **could** include (say) the original file owner and then that **could** be restored when the object is copied back from S3. This requires the tool doing the copying to take care of that for you.

You might look at [s3cmd](https://s3tools.org/s3cmd) as an example but there are probably others out there too.

Answer

S3 doesn't store "Linux" permissions for object.
Consider using EFS instead.
See some discussion on this topic under:
https://www.reddit.com/r/aws/comments/d8lw4z/how_to_preserve_file_permissions_on_a_file_when/

Copying Files from Ec2 to S3

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