I have Google Cloud project shared with few collages and few service accounts. I have Owner permission on the GCP project.
I want to create a Google Cloud Storage Bucket that only me will have access to it. So, the other users and service accounts in the projects will can't see it.
I created a new Google Cloud bucket (permission: Uniform) and went into the "Permission" sections. This list was already filled with inherits permissions. Since I want that only me will have access into this bucket:
I was added my self as Storage Admin
I removed the permissions for Owner, Editor and Viewer for this repository.
Now I have list with all the service accounts in the project. Unfortunately, Google not allowing me to remove the access of those service accounts:
How to revoke account to those service-accounts to this bucket?
These are inherited access which cannot be removed at bucket level.
Roles are always inherited, and there is no way to explicitly remove a permission for a lower-level resource that is granted at a higher level in the resource hierarchy.
As a principle of least priviledge grant minimum scope to the service accounts.
Related
I have create a new Firestore project and want to be able to create, update and delete but simply trying to list buckets gives me the following error:
<user>#<project>.iam.gserviceaccount.com does not have storage.buckets.list access to the Google Cloud projec
In GCP When searching filtering roles, there doesn't appear to be specific storage or bucket roles. Similarly the only firestore role is Firestore Service Agent but can't see how to apply it.
I think I am confused by IAM, Principles, roles. Looks like IAM has permissions and roles attached to it and a principle is another name for the user?
Either way, how can I apply the correct roles and permissions to my service account credentials so that I can list buckets?
EDIT:
Screenshot
If you want your service account to have full access to the bucket(s), you can give it the IAM role Storage Admin. IAM roles actually include a bunch of permissions, in this case, it includes storage.buckets.list and many other permissions.
If you want more restriction on the service account permissions, you could give it some other roles defined here: https://cloud.google.com/storage/docs/access-control/iam-roles. For instance, if the service account only has to read information in buckets, you could give it the role Storage Object Viewer.
Another way to do it would be to give your service account role(s) directly in each bucket instead of defining the role in IAM. This way, you can give a service account access to a single bucket instead of giving it access to all the project's buckets.
I have some sensitive data saved on GCS bucket. Now, the requirement is to generate V4 signed urls of the GCS objects and allow only certain users to download the objects who possesses the url. However, other users should only be able to see that object is present on GCS but should not be allowed to download the same.
For this, we have created a service account which has Storage Admin role (yes, we can further restrict this) and same is used to generate the urls. However, the issue is, any user who is having storage object viewer role, is able to download the object which we do not want. Is there any way we can restrict all other users apart from service account to download the object?
Also, I tried creating a custom role which was given storage.buckets.list and storage.objects.get or storage.objects.list permissions, and then assign that role to the desired users but in both the cases, user was able to download the files. Apart from these 2 permissions, i could not find any other permission which could restrict the download.
The IAM policy applied to your project defines the actions that users can take on all objects or buckets within your project. An IAM policy applied to a single bucket defines the actions that users can take on that specific bucket and objects within it.
1.Create an IAM policy for your buckets that gives one user administrative control of that bucket. Meanwhile, you can add another user to your project-wide IAM policy that gives that user the ability to view objects in any bucket of your project.
2.Go to your bucket and define the members and the assigned roles, which grant members the ability to perform actions in Cloud Storage as well as Google Cloud more generally.
here is the link from GCP docs: https://cloud.google.com/storage/docs/collaboration
In Google Cloud Platform 'IAM & Admin' => 'Roles' I have created a custom role, but I don't see a way to limit the role to a specific storage bucket.
I am selecting the Storage Object Admin permission, but it seems to be global applying to all buckets. How can I limit the custom role I am creating to a specific bucket?
How can I limit the custom role I am creating to a specific bucket?
The answer is you cannot. However, you can achieve your objective with a different method.
1) Do not give this user (IAM member) any permissions (roles) to access Cloud Storage.
2) Use the "gsutil iam" commands to add the user's identity (email address) to the bucket.
I wrote two articles which discuss this in more detail. link and link
The important item is that instead of assigning permissions to the user, you are assigning the user to the bucket. In my articles, I show how to create a service account with no permissions that can then access Cloud Storage, KMS, etc.
i am trying to give permissions for google cloud storage buckets with service account json file using django-storages.But the items in buckets are getting accessible only when i gave access to allUsers with Objects View Permission.How can i restrict public access for the bucket.
You can take a look to this link that contains a useful guide about the process required to connect Django to GCS by using Service account JSON files; in this way, you can implement this authentication method to access to your buckets instead of making your data public. Adittionally, please keep in mind it is required to assign the Cloud Storage IAM Roles to the service account, by using the IAM console or by creating ACLs, in order to grant the access permissions.
Finally, once you have your Service account key file ready, you can authenticate your application by setting the GOOGLE_APPLICATION_CREDENTIALS environment variable with the path of the json file or passing the path directly into your code, as explained in the GCS official documentation.
I'm currently using web UI to browse the files in one of the buckets and I happen to be the project owner as well. However I get a permission error
You need the storage.objects.list permission to list objects in this
bucket. Ask a project or bucket owner to give you this permission,
then try again.
I'm completely stumped as I'm project owner. Any ideas?
The role roles/owner doesn't grant access to data within buckets.
The best resource to figure out which built-in IAM roles can do which things is the Google Cloud Platform IAM Permissions Reference.
On that page, CTRL-F for storage.objects.list (or for that matter, any other permission you're interested in) and you will see the roles that grant it on the right-hand column. Note that project owner (roles/owner) is not in the list of roles that grant this permission.
When buckets are created, roles/storage.legacyBucketOwner is granted to project owners, editors, and viewers by default. However, this permission can always be revoked, and in fact many users choose to remove this permission for more granular control over access to data in the bucket as opposed to project resources like VMs.
A good example would be a bucket which contains sensitive PII data. You might not want people who can SSH into VMs in the project to be in-scope to read that data.
In the GCP Console navigate to the IAM Admin menu.
Choose IAM (top menu item)
Select your account.
In the info panel click on Add Role
Add the Storage Object Admin role to your account
Choose Service Accounts menu item from the IAM menu (below Quotas)
Select the compute#developer.gserviceaccount.com or default account.
In the info panel click on Add Member and add your account.
You should now have full access to the Storage Bucket
I remember when I used google storage for speech API, I need to go to IAM console to add "Storage Admin" role to the service account even though I'm the project owner.
I understand that you're not using gsutil. But at this point, maybe give it a try to create the service account and give it the right permission? Hopefully, this will make it work for you.
You can try running this command
gsutil iam ch 'user:myacc#mydoma.in:legacyObjectOwner' gs://mybucket
it's worked for me.
else you can go in I&AM and assign the storage admin role to your account.