The subscription-manager package can be installed with the following command:
$ sudo dnf install subscription-manager
Red Hat Subscription Manager is a local service which tracks installed products and subscriptions on a local system to help manage subscription assignments. It communicates with the backend subscription service (the Customer Portal or an on-premise server such as Subscription Asset Manager) and works with content management tools such as . The package provides, among other things, plugins to interact with repositories and subscriptions from the Red Hat entitlement platform - the subscription-manager and product-id plugins.
The Red Hat Subscription Manager (rhsmcertd) periodically checks for
changes in the entitlement certificates for a registered system and updates it
accordingly.
The rhsmcertd service can be disabled with the following command:
$ sudo systemctl mask --now rhsmcertd.service
The rhsmcertd service can provide administrators with some additional control over which of their systems are entitled to particular subscriptions. However, for systems that are managed locally or which are not expected to require remote changes to their subscription status, it is unnecessary and can be disabled.