Chapter 7. Bucket policies in the Multicloud Object Gateway OpenShift Data Foundation supports AWS S3 bucket policies. Bucket policies allow you to grant users access permissions for buckets and the objects in them. 7.1. Introduction to bucket policies Bucket policies are an access policy option available for you to grant permission to your AWS S3 buckets and objects. Bucket policies use JSON-based access policy language. For more information about access policy language, see AWS Access Policy Language Overview . 7.2. Using bucket policies in Multicloud Object Gateway Prerequisites A running OpenShift Data Foundation Platform. Access to the Multicloud Object Gateway (MCG), see Chapter 2, Accessing the Multicloud Object Gateway with your applications . A valid Multicloud Object Gateway user account. See Creating a user in the Multicloud Object Gateway for instructions to create a user account. Procedure To use bucket policies in the MCG: Create the bucket policy in JSON format. For example: Replace john.doe@example.com with a valid Multicloud Object Gateway user account. Using AWS S3 client, use the put-bucket-policy command to apply the bucket policy to your S3 bucket: Replace ENDPOINT with the S3 endpoint. Replace MyBucket with the bucket to set the policy on. Replace BucketPolicy with the bucket policy JSON file. Add --no-verify-ssl if you are using the default self signed certificates. For example: For more information on the put-bucket-policy command, see the AWS CLI Command Reference for put-bucket-policy . Note The principal element specifies the user that is allowed or denied access to a resource, such as a bucket. Currently, Only NooBaa accounts can be used as principals. In the case of object bucket claims, NooBaa automatically create an account obc-account.<generated bucket name>@noobaa.io . Note Bucket policy conditions are not supported. Additional resources There are many available elements for bucket policies with regard to access permissions. For details on these elements and examples of how they can be used to control the access permissions, see AWS Access Policy Language Overview . For more examples of bucket policies, see AWS Bucket Policy Examples . 7.3. Creating a user in the Multicloud Object Gateway Prerequisites A running OpenShift Data Foundation Platform. Download the MCG command-line interface for easier management. Note Specify the appropriate architecture for enabling the repositories using the subscription manager. For IBM Power, use the following command: For IBM Z, use the following command: Alternatively, you can install the MCG package from the OpenShift Data Foundation RPMs found at Download RedHat OpenShift Data Foundation page . Note Choose the correct Product Variant according to your architecture. Procedure Execute the following command to create an MCG user account: <noobaa-account-name> Specify the name of the new MCG user account. --allow_bucket_create Allows the user to create new buckets. --allowed_buckets Sets the user's allowed bucket list (use commas or multiple flags). --default_resource Sets the default resource.The new buckets are created on this default resource (including the future ones). --full_permission Allows this account to access all existing and future buckets. Important You need to provide permission to access atleast one bucket or full permission to access all the buckets.

Commands:
{ "Version": "NewVersion", "Statement": [ { "Sid": "Example", "Effect": "Allow", "Principal": [ "john.doe@example.com" ], "Action": [ "s3:GetObject" ], "Resource": [ "arn:aws:s3:::john_bucket" ] } ] }
aws --endpoint ENDPOINT --no-verify-ssl s3api put-bucket-policy --bucket MyBucket --policy file:// BucketPolicy
aws --endpoint https://s3-openshift-storage.apps.gogo44.noobaa.org --no-verify-ssl s3api put-bucket-policy -bucket MyBucket --policy file://BucketPolicy
subscription-manager repos --enable=rh-odf-4-for-rhel-8-x86_64-rpms yum install mcg
subscription-manager repos --enable=rh-odf-4-for-rhel-8-ppc64le-rpms
subscription-manager repos --enable=rh-odf-4-for-rhel-8-s390x-rpms
noobaa account create <noobaa-account-name> [--allow_bucket_create=true] [--allowed_buckets=[]] [--default_resource=''] [--full_permission=false]