If you don't have an object storage service from a cloud provider, you can deploy the open-source service MinIO in Kubernetes and use it to configure BackupRepo.
Access the login page by running kubectl port-forward --namespace kb-system svc/minio 9001:9001 and then accessing 127.0.0.1:9001.
Once you are logged in to the dashboard, you can generate an access key and secret key.
Create a bucket.
Create a bucket named test-minio for the test.
NOTE
The access address (endpoint) for the installed MinIO is http://minio.kb-system.svc.cluster.local:9000. In this case, kb-system is the name of the namespace where MinIO is installed.