okd/roles/openshift_node/tasks/apply_machine_config.yml

---
- name: Create temp directory
  tempfile:
    state: directory
  register: temp_dir

- name: Get worker machine config name
  command: >
    oc get machineconfigpool worker
    --config={{ openshift_node_kubeconfig_path }}
    --output=jsonpath='{.status.configuration.name}'
  delegate_to: localhost
  register: oc_get
  until:
  - oc_get.stdout != ''
  retries: 36
  delay: 5

- name: Set l_worker_machine_config_name
  set_fact:
    l_worker_machine_config_name: "{{ oc_get.stdout }}"

- name: Get worker ignition config
  command: >
    oc get machineconfig {{ l_worker_machine_config_name }}
    --config={{ openshift_node_kubeconfig_path }}
    --output=json
  delegate_to: localhost
  register: oc_get
  until:
  - oc_get.stdout != ''
  retries: 36
  delay: 5

- name: Write worker ignition config to file
  copy:
    content: "{{ (oc_get.stdout | from_json).spec.config }}"
    dest: "{{ temp_dir.path }}/worker_ignition_config.json"

- name: Get machine-config-daemon image
  command: >
    oc get daemonset machine-config-daemon
    --config={{ openshift_node_kubeconfig_path }}
    --namespace=openshift-machine-config-operator
    --output=jsonpath='{.spec.template.spec.containers[?(@.name=="machine-config-daemon")].image}'
  delegate_to: localhost
  register: oc_get
  until:
  - oc_get.stdout != ''
  retries: 36
  delay: 5

- name: Set l_mcd_image fact
  set_fact:
    l_mcd_image: "{{ oc_get.stdout }}"

- name: Apply machine config
  command: "podman run {{ podman_mounts }} {{ podman_flags }} {{ mcd_command }}"
  vars:
    podman_flags: "--privileged --rm -ti {{ l_mcd_image }}"
    podman_mounts: "-v /:/rootfs -v /var/run/dbus:/var/run/dbus -v /run/systemd:/run/systemd"
    mcd_command: "start --node-name {{ ansible_hostname }} --once-from {{ temp_dir.path }}/worker_ignition_config.json --skip-reboot"

- name: Remove temp directory
  file:
    path: "{{ temp_dir.path }}"
    state: absent

- name: Reboot the host and wait for it to come back
  reboot:
  #  reboot_timeout: 600  # default, 10 minutes