ansible-role-nginx-config-svc/tasks/main.yml

---
- name: check if the config already exists
  ansible.builtin.stat:
    path: "/etc/nginx/http.d/{{ instance_name | default(ansible_play_name) }}.conf"
    get_mime: false
    get_checksum: false
    get_attributes: false
  when: onlyifnotexist is defined and onlyifnotexist
  register: cnf

- name: configure nginx for {{ instance_name | default(ansible_play_name) }}
  template:
    src: nginx.conf.j2
    dest: "/etc/nginx/http.d/{{ instance_name | default(ansible_play_name) }}.conf"
    mode: 0644
  when: onlyifnotexist is not defined or not onlyifnotexist or not cnf.stat.exists
  notify:
    - reload nginx