okd/playbooks/container-runtime/private/config.yml

---
- hosts: "{{ l_containerized_host_groups }}"
  vars:
    l_chg_temp: "{{ hostvars[groups['oo_first_master'][0]]['openshift_containerized_host_groups'] | default([]) }}"
    l_containerized_host_groups: "{{ (['oo_nodes_to_config'] | union(l_chg_temp)) | join(':') }}"
  # role: container_runtime is necessary  here to bring role default variables
  # into the play scope.
  roles:
    - role: container_runtime
  tasks:
    - import_role:
        name: container_runtime
        tasks_from: package_docker.yml
      when:
        - not openshift_docker_use_system_container | bool
        - not openshift_use_crio_only | bool
    - import_role:
        name: container_runtime
        tasks_from: systemcontainer_docker.yml
      when:
        - openshift_docker_use_system_container | bool
        - not openshift_use_crio_only | bool
    - import_role:
        name: container_runtime
        tasks_from: systemcontainer_crio.yml
      when:
        - openshift_use_crio | bool
        - openshift_docker_is_node_or_master | bool