The deployment manifest (v0.5) creates cluster wide resources (ClusterRole, ClusterRoleBinding, …) with generic name like metrics-auth and metrics-reader.

Using generic name for cluster wide resource is discouraged as they may conflict with other components deployed in the same cluster.

These resources name should probably be prefixed by barman-plugin- to avoid conflict with other cluster components.

Even the ClusterRole like objectstore-viewer-role should make it clear they are barman-objectstore and not related to any other objectstore (like CephObjectStore).

And even for the namespaced resources (leader-election-rolebinding, selfsigned-issuer) it may be an issue. If you try to deploy 2 CNPG plugins that both require specific leader-election-rolebinding, they may clash.