Google Cloud Storage: bulk edit ACLs

Question

We are in the process of moving our servers into the Google Cloud Compute Engine and starting to look the Cloud Storage as a CDN option. I uploaded about 1,000 files through the Developer Console but the problem is all the Object Permissions for All Users is set at None. I can't find any way to edit all the permissions to give All Users Reader access. Am I missing something?

Answer 1

You can use the gsutil acl ch command to do this as follows:

gsutil -m acl ch -R -g All:R gs://bucket1 gs://bucket2/object ...

where:

• -m sets multi-threaded mode, which is faster for a large number of objects
• -R recursively processes the bucket and all of its contents
• -g All:R grants all users read-only access

See the acl documentation for more details.

You can use Google Cloud Shell as your console via a web browser if you just need to run a single command via gsutil, as it comes preinstalled in your console VM.

Answer 2

In addition to using the gsutil acl command to change the existing ACLs, you can use the gsutil defacl command to set the default object ACL on the bucket as follows:

gsutil defacl set public-read gs://«your bucket»

You can then upload your objects in bulk via:

gsutil -m cp -R «your source directory» gs://«your bucket»

and they will have the correct ACLs set. This will all be much faster than using the web interface.