okd/roles/openshift_node/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 that comments out swap entries in
# /etc/fstab and runs swapoff -a, if necessary.
- name: Disable swap
  swapoff: {}

# 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
- name: Enable IP Forwarding
  sysctl:
    name: net.ipv4.ip_forward
    value: 1
    sysctl_file: "/etc/sysctl.d/99-openshift.conf"
    reload: yes

# The base OS RHEL with "Minimal" installation option is
# enabled firewalld serivce by default, it denies unexpected 10250 port.
# Reference: https://bugzilla.redhat.com/show_bug.cgi?id=1740439
- name: Disable firewalld service
  systemd:
    name: "firewalld.service"
    enabled: false
  register: service_status
  failed_when:
  - service_status is failed
  - not ('Could not find the requested service' in service_status.msg)

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

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

- name: Wait for bootstrap endpoint to show up
  uri:
    url: "{{ openshift_node_bootstrap_endpoint }}"
    validate_certs: false
  delay: 10
  retries: 60
  register: result
  until:
  - result.status is defined
  - result.status == 200

- name: Fetch bootstrap ignition file locally
  uri:
    url: "{{ openshift_node_bootstrap_endpoint }}"
    dest: "{{ temp_dir.path }}/bootstrap.ign"
    validate_certs: false

- name: Get cluster pull-secret
  command: >
    oc get secret pull-secret
    --config={{ openshift_node_kubeconfig_path }}
    --namespace=openshift-config
    --output=jsonpath='{.data.\.dockerconfigjson}'
  delegate_to: localhost
  register: oc_get
  until:
  - oc_get.stdout != ''
  retries: 36
  delay: 5

- name: Write pull-secret to file
  copy:
    content: "{{ oc_get.stdout | b64decode }}"
    dest: "{{ temp_dir.path }}/pull-secret.json"

- name: Get cluster 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 is defined
  - oc_get.stdout != ''
  retries: 36
  delay: 5

- name: Set l_release_image fact
  set_fact:
    l_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 {{ l_release_image }}"

- name: Get machine controller daemon image from release image
  command: "podman run --rm {{ l_release_image }} image machine-config-operator"
  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 ignition manifest
    command: "podman run {{ podman_mounts }} {{ podman_flags }} {{ mcd_command }}"
    vars:
      podman_flags: "--privileged --rm --entrypoint=/usr/bin/machine-config-daemon -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_nodename | lower }} --once-from {{ temp_dir.path }}/bootstrap.ign --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: "Ignition apply failed"

- name: Wait for nodes to report ready
  command: >
    oc get node {{ hostvars[item].ansible_nodename | lower }}
    --config={{ openshift_node_kubeconfig_path }}
    --output=jsonpath='{.status.conditions[?(@.type=="Ready")].status}'
  loop: "{{ ansible_play_batch }}"
  delegate_to: localhost
  run_once: true
  register: oc_get
  until:
  - oc_get.stdout == "True"
  retries: 36
  delay: 5