Ansible_PUBLIC/roles/vcn/tasks/main.yml

- name: create vcn folder
  file:
    path: /etc/tinc/vcn
    state: directory
    mode: '0700'

- name: create keys
  shell: tincd -n vcn -K4096

- name: display public key
  vars:
     contents: "{{ lookup('file', '/etc/tinc/vcn/rsa_key.pub') }}"
  debug: msg="vcn public key is {{ contents }}"