6.8. Attaching a Red Hat Subscription and Enabling the Certificate System Package Repository

1. Register the system to the Red Hat subscription management service.
   You can use the --auto-attach option to automatically apply an available subscription for the operating system.

   # subscription-manager register --auto-attach
   Username: admin@example.com
   Password:
   The system has been registered with id: 566629db-a4ec-43e1-aa02-9cbaa6177c3f
   
   Installed Product Current Status:
   Product Name:           Red Hat Enterprise Linux Server
   Status:                 Subscribed

2. List the available subscriptions and note the pool ID providing the Red Hat Certificate System. For example:

   # subscription-manager list --available --all
   ...
   Subscription Name:   Red Hat Enterprise Linux Developer Suite
   Provides:            ...
                        Red Hat Certificate System
                        ...
   Pool ID:             7aba89677a6a38fc0bba7dac673f7993
   Available:           1
   ...

   In case you have a lot of subscriptions, the output of the command can be very long. You can optionally redirect the output to a file:

   # subscription-manager list --available --all > /root/subscriptions.txt

3. Attach the Certificate System subscription to the system using the pool ID from the previous step:

   # subscription-manager attach --pool=7aba89677a6a38fc0bba7dac673f7993
   Successfully attached a subscription for: Red Hat Enterprise Linux Developer Suite

# subscription-manager repos --enable certsys-10-for-rhel-8-x86_64-eus-rpms
Repository 'certsys-10-for-rhel-8-x86_64-eus-rpms' is enabled for this system.

# dnf module enable redhat-pki