---
# pihole_flush_dns.yml
# Flush and reload DNS on all Pi-hole instances in sequence.
# Runs serially (serial: 1) so one resolver is always available.
#
# Usage:
#   ansible-playbook -i inventory/hosts.ini playbooks/pihole_flush_dns.yml
#   ansible-playbook -i inventory/hosts.ini playbooks/pihole_flush_dns.yml --limit pi.prole.org

- name: Flush and reload Pi-hole DNS cache
  hosts: pihole
  serial: 1          # one at a time — keep a resolver up at all times
  become: true
  gather_facts: false

  tasks:
    - name: Flush cache and reload lists (Pi-hole v6+)
      command: pihole reloaddns
      register: pihole_reload
      changed_when: true

    - name: Show pihole reloaddns output
      debug:
        msg: "{{ pihole_reload.stdout_lines }}"
      when: pihole_reload.stdout_lines | length > 0

    - name: Verify pihole-FTL is running
      command: pihole status
      register: pihole_status
      changed_when: false

    - name: Show Pi-hole status
      debug:
        msg: "{{ pihole_status.stdout_lines }}"