roles/ssh-key/tasks/main.yml

# Fetch local user rather than relying on (deprecated) ansible_user
- name: Get the username running the deploy
  local_action: command whoami
  register: username_on_the_host
  tags:
    - establish_ssh_keys
    - skip_ansible_lint

# SSH Key access from the current machine to the target node is required for the
# synchronize action to work.
- name: Ensure User SSH Keys
  local_action: user name='{{ username_on_the_host.stdout }}' generate_ssh_key=yes ssh_key_bits=2048
  tags:
    - establish_ssh_keys

- name: Ensure Key Authorized on Target Head Node
  authorized_key:
    user: '{{ansible_ssh_user}}'
    key: "{{lookup('file', '~/.ssh/id_rsa.pub')}}"
  tags:
    - establish_ssh_keys

- name: Ensure key pair storage
  become: yes
  local_action: file path={{pub_ssh_key_file_location}} mode="0755" state=directory

- name: Validate existing key pair
  become: yes
  local_action: stat path={{pub_ssh_key_file_location}}/cord_rsa
  register: key_pair

- name: Generate key pair
  become: yes
  local_action: command ssh-keygen -b 2048 -t rsa -N "" -C cord@cord.lab -f {{pub_ssh_key_file_location}}/cord_rsa
  when: not key_pair.stat.exists

- name: Ensure privacy of key pair
  become: yes
  local_action: file path="{{pub_ssh_key_file_location}}/{{item.name}}" mode="{{item.mode}}"
  with_items:
    - { "name": "cord_rsa", "mode": "0644" }
    - { "name": "cord_rsa.pub", "mode": "0644" }