okd/roles/openshift_node40/tasks/config.yml

---
#### Disable SWAP #####
# https://docs.openshift.com/container-platform/3.4/admin_guide/overcommit.html#disabling-swap-memory
# swapoff is a custom module in lib_utils that comments out swap entries in
# /etc/fstab and runs swapoff -a, if necessary.
- name: Disable swap
  swapoff: {}
  when: openshift_disable_swap | default(true) | bool

# The atomic-openshift-node service will set this parameter on
# startup, but if the network service is restarted this setting is
# lost. Reference: https://bugzilla.redhat.com/show_bug.cgi?id=1372388
- sysctl:
    name: net.ipv4.ip_forward
    value: 1
    sysctl_file: "/etc/sysctl.d/99-openshift.conf"
    reload: yes

- name: Setting sebool container_manage_cgroup
  seboolean:
    name: container_manage_cgroup
    state: yes
    persistent: yes

- name: create temp directory
  tempfile:
    state: directory
  register: tempfile

- name: Copy pull secret in the directory
  copy:
    src: "{{ pull_secret }}"
    dest: "{{ tempfile.path }}/pull-secret.json"

- name: Pull release image
  command: "podman pull --tls-verify={{ tls_verify }} --authfile {{ tempfile.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

- name: Copy bootstrap ignition file locally
  copy:
    src: "{{ openshift_ignition_file_path }}"
    dest: "{{ ign_file }}"
  when: openshift_ignition_file_path is defined

- name: Fetch bootstrap ignition file locally
  uri:
    url: "{{ openshift_bootstrap_endpoint }}"
    dest: "{{ ign_file }}"
    validate_certs: false
  when: openshift_bootstrap_endpoint is defined

- block:
  - name: Pull MCD image
    command: "podman pull --tls-verify={{ tls_verify }} --authfile {{ tempfile.path }}/pull-secret.json {{ release_image_mcd.stdout }}"

  - name: Apply ignition manifest
    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 {{ ign_file }}"
    # MCD reboots the machine, run the task but do not wait for completion
    register: manifest_apply
    async: 900  # 15 minutes
    poll: 0

  # Wait for the host to come back
  - wait_for_connection: {}

  # If the job fails, the async job status will find rc != 1 and will fail here
  # When the job is successful, Ansible does not update this job status due to
  # the host rebooting
  - name: Check manifest apply status
    async_status:
      jid: "{{ manifest_apply.ansible_job_id }}"

  rescue:
  - fail:
      msg: "Ignition apply failed"