okd/roles/openshift_node/tasks/main.yml

---
- fail:
    msg: "SELinux is disabled, This deployment type requires that SELinux is enabled."
  when:
    - (not ansible_selinux or ansible_selinux.status != 'enabled') and deployment_type in ['enterprise', 'online', 'atomic-enterprise', 'openshift-enterprise']
    - not openshift_use_crio | default(false)

- name: setup firewall
  include: firewall.yml
  static: yes

#### Disable SWAP #####
# https://docs.openshift.com/container-platform/3.4/admin_guide/overcommit.html#disabling-swap-memory
- name: Check for swap usage
  command: grep "^[^#].*swap" /etc/fstab
  # grep: match any lines which don't begin with '#' and contain 'swap'
  changed_when: false
  failed_when: false
  register: swap_result

- when:
    - swap_result.stdout_lines | length > 0
    - openshift_disable_swap | default(true) | bool
  block:
    - name: Disable swap
      command: swapoff --all

    - name: Remove swap entries from /etc/fstab
      replace:
        dest: /etc/fstab
        regexp: '(^[^#].*swap.*)'
        replace: '# \1'
        backup: yes

    - name: Add notice about disabling swap
      lineinfile:
        dest: /etc/fstab
        line: '# OpenShift-Ansible Installer disabled swap per overcommit guidelines'
        state: present
#### End Disable Swap Block ####

- name: include node installer
  include: install.yml

- name: Restart cri-o
  systemd:
    name: cri-o
    enabled: yes
    state: restarted
  when: openshift_use_crio | default(false)

- name: restart NetworkManager to ensure resolv.conf is present
  systemd:
    name: NetworkManager
    enabled: yes
    state: restarted
  when: openshift_node_bootstrap | 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
#
# Use lineinfile w/ a handler for this task until
# https://github.com/ansible/ansible/pull/24277 is included in an
# ansible release and we can use the sysctl module.
- name: Persist net.ipv4.ip_forward sysctl entry
  lineinfile: dest=/etc/sysctl.conf regexp='^net.ipv4.ip_forward' line='net.ipv4.ip_forward=1'
  notify:
    - reload sysctl.conf

- name: include bootstrap node config
  include: bootstrap.yml
  when: openshift_node_bootstrap

- name: include standard node config
  include: config.yml
  when: not openshift_node_bootstrap

- name: Check for credentials file for registry auth
  stat:
    path: "{{oreg_auth_credentials_path }}"
  when:
    - oreg_auth_user is defined
  register: node_oreg_auth_credentials_stat

- name: Create credentials for registry auth
  command: "docker --config={{ oreg_auth_credentials_path }} login -u {{ oreg_auth_user }} -p {{ oreg_auth_password }} {{ oreg_host }}"
  when:
    - oreg_auth_user is defined
    - (not node_oreg_auth_credentials_stat.stat.exists or oreg_auth_credentials_replace) | bool
  notify:
    - restart node

- name: Configure AWS Cloud Provider Settings
  lineinfile:
    dest: /etc/sysconfig/{{ openshift.common.service_type }}-node
    regexp: "{{ item.regex }}"
    line: "{{ item.line }}"
    create: true
  with_items:
    - regex: '^AWS_ACCESS_KEY_ID='
      line: "AWS_ACCESS_KEY_ID={{ openshift_cloudprovider_aws_access_key | default('') }}"
    - regex: '^AWS_SECRET_ACCESS_KEY='
      line: "AWS_SECRET_ACCESS_KEY={{ openshift_cloudprovider_aws_secret_key | default('') }}"
  no_log: True
  when: openshift_cloudprovider_kind is defined and openshift_cloudprovider_kind == 'aws' and openshift_cloudprovider_aws_access_key is defined and openshift_cloudprovider_aws_secret_key is defined
  notify:
    - restart node

#### Storage class plugins here ####
- name: NFS storage plugin configuration
  include: storage_plugins/nfs.yml
  tags:
    - nfs

- name: GlusterFS storage plugin configuration
  include: storage_plugins/glusterfs.yml
  when: "'glusterfs' in openshift.node.storage_plugin_deps"

- name: Ceph storage plugin configuration
  include: storage_plugins/ceph.yml
  when: "'ceph' in openshift.node.storage_plugin_deps"

- name: iSCSI storage plugin configuration
  include: storage_plugins/iscsi.yml
  when: "'iscsi' in openshift.node.storage_plugin_deps"

##### END Storage #####

- include: config/workaround-bz1331590-ovs-oom-fix.yml
  when: openshift_node_use_openshift_sdn | default(true) | bool