Replicating a bucket to another bucket using the MCG command-line interface

Provide higher resiliency and better collaboration options by replicating a bucket to another bucket using the MCG command-line interface.

Before you begin

Ensure you have a running Fusion Data Foundation Platform.
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.

About this task

Applications that require a Multicloud Object Gateway (MCG) bucket to have a specific replication policy can create an Object Bucket Claim (OBC) and define the replication policy parameter in a JSON file.

Procedure

From the MCG command-line interface, run the following command to create an OBC with a specific replication policy:

noobaa obc create <bucket-claim-name> -n openshift-storage --replication-policy /path/to/json-file.json

bucket-claim-name: Specify the name of the bucket claim.
/path/to/json-file.json: Is the path to a JSON file which defines the replication policy.

Example JSON file:

[{ "rule_id": "rule-1", "destination_bucket": "first.bucket", "filter": {"prefix": "repl"}}]

"prefix"

(Optional:) It is the prefix of the object keys that should be replicated, and you can even leave it empty, for example, {"prefix": ""}.

For example:

noobaa obc create my-bucket-claim -n openshift-storage --replication-policy /path/to/json-file.json