ansible_proxmox_WOL/tasks/main.yml

---
# ============================================================
# Install required packages
# ============================================================
- name: Install required packages
  ansible.builtin.apt:
    name: ethtool
    state: present
    update_cache: true

# ============================================================
# Detect physical NICs with WOL support using Ansible facts
# ============================================================
- name: Gather network interface facts
  ansible.builtin.setup:
    gather_subset:
      - network
  when: ansible_facts.interfaces is not defined

- name: Display interfaces
  ansible.builtin.debug:
    msg: >
      {{ ansible_facts.interfaces }}

# - name: Get interfaces starting with "en" or "eth"
#   ansible.builtin.set_fact:
#     en_interfaces: "{{ ansible_facts.interfaces | select('match', '^eth|^ens|^enp') | unique | list }}"

- name: Get interfaces starting with "en or "eth"
  ansible.builtin.set_fact:
    en_interfaces: >-
      {{
        ansible_facts.interfaces
        | select('match', '^(eth|en)')
        | list
      }}

- name: Display debug selected interfaces
  ansible.builtin.debug:
    msg: >
      {{ en_interfaces }}

- name: Check supported Wake-on-LAN modes
  ansible.builtin.shell: "ethtool {{ item }} | grep 'Supports Wake-on' | tail -1 | awk '{print $3}'"
  loop: "{{ en_interfaces }}"
  register: wol_supported
  changed_when: false
  when: en_interfaces | length > 0

- name: WOL | Check if enabled
  shell: >
    ethtool {{ item }} | grep 'Wake-on' | tail -1 | awk '{print substr($0,length,1)}'
  register: wol_enabled
  changed_when: false
  failed_when: false
  loop: "{{ en_interfaces }}"
  when: en_interfaces | length > 0

- name: Enable Wake-on-LAN (magic packet) when supported
  ansible.builtin.command: "ethtool -s {{ item.0 }} wol {{ wol_mode }}"
  loop: "{{ en_interfaces | zip(wol_enabled.results, wol_supported.results) | list }}"
  loop_control:
    label: "{{ item.0 }}"
  when:
    - wol_mode not in item.1.stdout
    - wol_mode in item.2.stdout


# # ============================================================
# # Enable WOL immediately (only if needed)
# # ============================================================
# - name: Enable Wake-on-LAN immediately on NICs
#   ansible.builtin.command: "ethtool -s {{ item }} wol {{ wol_mode }}"
#   register: wol_enable_result
#   changed_when: true
#   loop: "{{ wol_needs_enable }}"
#   loop_control:
#     label: "{{ item }}"
#   when: wol_needs_enable | length > 0

# # ============================================================
# # Persist WOL via udev rules (safe and idempotent)
# # ============================================================
# - name: Create udev rule content
#   ansible.builtin.set_fact:
#     wol_udev_rules: >-
#       {{
#         wol_final_interfaces
#         | map('regex_replace', '^(.+)$', 'ACTION=="add", SUBSYSTEM=="net", KERNEL=="\1", RUN+="/sbin/ethtool -s \1 wol {{ wol_mode }}"')
#         | list
#       }}

# - name: Create/Update udev rules file
#   ansible.builtin.copy:
#     dest: /etc/udev/rules.d/90-wol.rules
#     owner: root
#     group: root
#     mode: "0644"
#     content: |
#       # Wake-on-LAN udev rules - Auto-generated by Ansible
#       # Applies to: {{ wol_final_interfaces | join(', ') }}
#       {% for rule in wol_udev_rules %}
#       {{ rule }}
#       {% endfor %}
#     notify:
#       - Reload_udev_rules
#       - Trigger_udev_net

# # ============================================================
# # Verification & Reporting
# # ============================================================
# - name: Verify Wake-on-LAN status
#   ansible.builtin.command: "ethtool {{ item }}"
#   register: wol_status
#   changed_when: false
#   loop: "{{ wol_final_interfaces }}"
#   loop_control:
#     label: "{{ item }}"
#   when: wol_verify

# - name: Display WOL status per interface
#   ansible.builtin.debug:
#     msg: >
#       Interface {{ item.item }} WOL Status:
#       {{ item.stdout_lines | select('search', 'Wake-on:') | first | default('Status Unknown') }}
#   loop: "{{ wol_status.results | default([]) }}"
#   loop_control:
#     label: "{{ item.item }}"
#   when: wol_verify

# - name: Get MAC addresses for all interfaces
#   ansible.builtin.set_fact:
#     wol_mac_addresses: >-
#       {{
#         wol_final_interfaces
#         | map('extract', hostvars[inventory_hostname]['ansible_' ~ item] | default({}), 'macaddress')
#         | list
#       }}

# - name: Report WOL configuration
#   ansible.builtin.debug:
#     msg: |
#       Wake-on-LAN Configuration Summary:
#       ===================================
#       Bridges Configured: {{ wol_bridges_list | join(', ') }}
#       Physical Interfaces: {{ wol_final_interfaces | join(', ') }}
#       WOL Mode: {{ wol_mode }}
#       {% if wol_has_bond0 | default(false) %}
#       Bond0 Detected: Yes
#       Bond0 Slaves: {{ wol_bond0_slaves | join(', ') }}
#       {% endif %}
#       {% if wol_report_mac and wol_mac_addresses | length > 0 %}
#       MAC Addresses:
#       {% for iface, mac in (wol_final_interfaces | zip(wol_mac_addresses) | list) %}
#         - {{ iface }}: {{ mac | default('Unable to detect') }}
#       {% endfor %}
#       {% endif %}