#!/usr/bin/env ansible-playbook
---
- hosts:
    - ntp-1.int.infra.auro.re
  vars:
    chronyd__allow_networks:
      - 10.128.0.0/16
      - 2a09:6840:128::/48
    chronyd__pools:
      - 0.pool.ntp.org
      - 1.pool.ntp.org
      - 2.pool.ntp.org
      - 3.pool.ntp.org
  roles:
    - chronyd

- hosts:
    - all
    - "!ntp-1.int.infra.auro.re"
    - "!unifi"
  vars:
    chronyd__pools:
      - ntp-1.int.infra.auro.re
  roles:
    - chronyd
...