google cloud storage - gsutil copy returning "AccessDeniedException: 403 Insufficient Permission" from GCE

Question

I am logged in to a GCE instance via SSH. From there I would like to access the Storage with the help of a Service Account:

GCE> gcloud auth list
Credentialed accounts:
 - 1234567890-compute@developer.gserviceaccount.com (active)

I first made sure that this Service account is flagged "Can edit" in the permissions of the project I am working in. I also made sure to give him the Write ACL on the bucket I would like him to copy a file:

local> gsutil acl ch -u 1234567890-compute@developer.gserviceaccount.com:W gs://mybucket

But then the following command fails:

GCE> gsutil cp test.txt gs://mybucket/logs

(I also made sure that "logs" is created under "mybucket").

The error message I get is:

Copying file://test.txt [Content-Type=text/plain]...
AccessDeniedException: 403 Insufficient Permission               0 B  

What am I missing?

Answer 1

Waitting for answers