ansible-role-certbot/tasks/test-cert-exists.yml

---
- name: Check if certificate already exists.
  stat:
    path: /etc/letsencrypt/live/{{ cert_item.domains | first }}/cert.pem
  register: letsencrypt_cert_exists

- name: Check if certificate domain list has changed.
  lineinfile:
    path: /etc/letsencrypt/domains-{{ cert_item.domains | first }}.json
    line: " {{ cert_item.domains | to_json }}"
    state: present
    create: yes
  check_mode: yes
  register: letsencrypt_cert_contents
  when: letsencrypt_cert_exists.stat.exists

- set_fact:
    letsencrypt_cert_updated: "{{ (letsencrypt_cert_contents | changed) or (letsencrypt_cert_contents | failed) }}"
  when: letsencrypt_cert_exists.stat.exists