RHEL upgrade: use API to get ignition from machine config

Switch from using bootstrap ignition config from MCS to using the
ignition config from the worker machine config obtained from the
cluster API.

roles/openshift_node/tasks/apply_machine_config.yml

@@ -0,0 +1,90 @@
+---
+- 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: Copy pull secret
+  copy:
+    src: "{{ openshift_pull_secret_path }}"
+    dest: "{{ temp_dir.path }}/pull-secret.json"
+
+- name: Get release image
+  command: >
+    oc get clusterversion
+    --config={{ openshift_node_kubeconfig_path }}
+    --output=jsonpath='{.items[0].status.desired.image}'
+  delegate_to: localhost
+  register: oc_get
+  until:
+  - oc_get.stdout != ''
+  retries: 36
+  delay: 5
+
+- name: Set openshift_release_image fact
+  set_fact:
+    openshift_release_image: "{{ oc_get.stdout }}"
+
+- name: Pull release image
+  command: "podman pull --tls-verify={{ openshift_node_tls_verify }} --authfile {{ temp_dir.path }}/pull-secret.json {{ openshift_release_image }}"
+
+- name: Get machine controller daemon image from release image
+  command: "podman run --rm {{ openshift_release_image }} image machine-config-daemon"
+  register: release_image_mcd
+
+- block:
+  - name: Pull MCD image
+    command: "podman pull --tls-verify={{ openshift_node_tls_verify }} --authfile {{ temp_dir.path }}/pull-secret.json {{ release_image_mcd.stdout }}"
+
+  - name: Apply machine config
+    command: "podman run {{ podman_mounts }} {{ podman_flags }} {{ mcd_command }}"
+    vars:
+      podman_flags: "--privileged --rm -ti {{ release_image_mcd.stdout }}"
+      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
+
+  rescue:
+  - fail:
+      msg: "Machine config apply failed"

roles/openshift_node/tasks/upgrade.yml

@@ -27,12 +27,14 @@
   - include_tasks: "{{ openshift_node_pre_upgrade_hook }}"
   when: openshift_node_pre_upgrade_hook is defined
 
-# Upgrade Node
-- import_role:
-    name: openshift_node
+# Upgrade Node Packages
+- import_tasks: install.yml
   vars:
     openshift_node_package_state: latest
 
+# Apply machine config
+- import_tasks: apply_machine_config.yml
+
 # Run the openshift_node_pre_uncordon_hook if defined
 - block:
   - debug: