certificates.yml

#!/usr/bin/env ansible-playbook
---

- name: CERTIFICATES
  hosts:
    - monitor
    - manager
    - server
  tags:
    - monitor
    - manager
    - server
    - letsencrypt
  roles:
    - role: letsencrypt
      when:
        - letsencrypt_enabled is defined
        - letsencrypt_enabled

...