22.5. Locking the system to a particular release by using the rhc RHEL system role

Procedure

1. Create a playbook file, for example, ~/playbook.yml, with the following content:

   ---
   - name: Managing systems with the rhc RHEL system role
     hosts: managed-node-01.example.com
     tasks:
       - name: Lock the system to a particular release
         ansible.builtin.include_role:
           name: redhat.rhel_system_roles.rhc
         vars:
           rhc_release: "8.6"

   The settings specified in the example playbook include the following:

   rhc_release: version

   The version of RHEL to set for the system, so the available content will be limited to that version.

   For details about all variables used in the playbook, see the /usr/share/ansible/roles/rhel-system-roles.rhc/README.md file on the control node.

2. Validate the playbook syntax:

   $ ansible-playbook --syntax-check ~/playbook.yml

   Note that this command only validates the syntax and does not protect against a wrong but valid configuration.

3. Run the playbook:

   $ ansible-playbook ~/playbook.yml