Chapter 2. Attaching a host-based subscription to hypervisors

Use this procedure to attach a host-based subscription, such as Red Hat Enterprise Linux for Virtual Datacenters, to hypervisors that are already registered.

To register a new hypervisor, see Using and Configuring Red Hat Subscription Manager. You must register a hypervisor before configuring virt-who to query it.


  • Ensure you have sufficient entitlements for the host-based subscription to cover all of the hypervisors you plan to use.

Web UI procedure

  1. Log in to the Customer Portal at
  2. Navigate to Subscriptions > Systems and click the name of the hypervisor.
  3. Click the Subscriptions tab.
  4. Click Attach Subscriptions.
  5. Select the host-based subscription, then click Attach Subscriptions.

Repeat these steps for each hypervisor.

CLI procedure

  1. On the hypervisor, identify and make a note of your host-based subscription’s Pool ID:

    # subscription-manager list --all --available --matches 'Host-based Subscription Name'
  2. Attach the host-based subscription to the hypervisor:

    # subscription-manager attach --pool=Pool_ID
  3. Verify that the host-based subscription is attached:

    # subscription-manager list --consumed

Repeat these steps for each hypervisor.