Adding an AWS S3 namespace bucket using the Multicloud Object Gateway CLI

Add an AWS S3 namespace bucket using the Multicloud Object Gateway CLI.

Before you begin

Install OpenShift Container Platform with Fusion Data Foundation operator.
Ensure you have access to the Multicloud Object Gateway (MCG), see Accessing the Multicloud Object Gateway with your applications.
Download the MCG command-line interface for easier management.
```
subscription-manager repos --enable=rh-odf-4-for-rhel-8-x86_64-rpms
```
```
yum install mcg
```
Note: Specify the appropriate architecture for enabling the repositories using the subscription manager. In case of IBM Z infrastructure, use the following command:
```
subscription-manager repos --enable=rh-odf-4-for-rhel-8-s390x-rpms
```
Alternatively, you can install the MCG package from the RPMs found at Download Red Hat OpenShift Data Foundation page.

Note: Choose the correct Product Variant according to your architecture.

Procedure

In the MCG command-line interface, create a NamespaceStore resource.
A NamespaceStore represents an underlying storage to be used as a read or write target for the data in MCG namespace buckets.
```
noobaa namespacestore create aws-s3 <namespacestore> --access-key <AWS ACCESS KEY> --secret-key <AWS SECRET ACCESS KEY> --target-bucket <bucket-name> -n openshift-storage
```
namespacestore

The name of the NamespaceStore.

AWS ACCESS KEY and AWS SECRET ACCESS KEY

The AWS access key ID and secret access key you created for this purpose.

bucket-name

The existing AWS bucket name. This argument tells the MCG which bucket to use as a target bucket for its backing store, and subsequently, data storage and administration.
Create a namespace bucket class that defines a namespace policy for the namespace buckets. The namespace policy can be either single or multi.
- To create a namespace bucket class with a namespace policy of type single:
```
noobaa bucketclass create namespace-bucketclass single <my-bucket-class> --resource <resource> -n openshift-storage
```
  resource-name
  
  The name you want to give the resource.
  
  my-bucket-class
  
  A unique bucket class name.
  
  resource
  
  A single namespace-store that defines the read and write target of the namespace bucket.
- To create a namespace bucket class with a namespace policy of type multi:
```
noobaa bucketclass create namespace-bucketclass multi <my-bucket-class> --write-resource <write-resource> --read-resources <read-resources> -n openshift-storage
```
  resource-name
  
  The name you want to give the resource.
  
  my-bucket-class
  
  A unique bucket class name.
  
  write-resource
  
  A single namespace-store that defines the write target of the namespace bucket.
  
  read-resources
  
  A list of namespace-stores separated by commas that defines the read targets of the namespace bucket.
Create a bucket using an Object Bucket Class (OBC) resource that uses the bucket class defined in the previous step.
```
noobaa obc create my-bucket-claim -n openshift-storage --app-namespace my-app --bucketclass <custom-bucket-class>
```
bucket-name

A bucket name of your choice.

custom-bucket-class

The name of the bucket class created in the previous step.

After the OBC is provisioned by the operator, a bucket is created in the MCG, and the operator creates a Secret and a ConfigMap with the same name and in the same namespace as that of the OBC.