iiab/roles/vnstat/tasks/main.yml

- name: Install 'vnstat' package
  package:
    name: vnstat
    state: present

- name: Install /etc/vnstat.conf from template
  template:
    src: vnstat.conf.j2
    dest: /etc/vnstat.conf
    # owner: root
    # group: root
    mode: '0744'

- name: Create database for WAN to collect vnStat data
  shell: /usr/bin/vnstat -i {{ iiab_wan_iface }}

- name: Create database for LAN to collect vnStat data if not appliance config
  shell: /usr/bin/vnstat -i {{ iiab_lan_iface }}
  when: iiab_lan_iface is defined


# RECORD vnStat AS INSTALLED

- name: "Set 'vnstat_installed: True'"
  set_fact:
    vnstat_installed: True

- name: "Add 'vnstat_installed: True' to {{ iiab_state_file }}"
  lineinfile:
    path: "{{ iiab_state_file }}"    # /etc/iiab/iiab_state.yml
    regexp: '^vnstat_installed'
    line: 'vnstat_installed: True'


- name: Enable & (Re)Start 'vnstat' systemd service, if vnstat_enabled
  systemd:
    name: vnstat
    daemon_reload: yes
    enabled: yes
    state: restarted
  when: vnstat_enabled | bool


- name: Add 'vnstat' variable values to {{ iiab_ini_file }}
  ini_file:
    path: "{{ iiab_ini_file }}"
    section: vnstat
    option: "{{ item.option }}"
    value: "{{ item.value | string }}"
  with_items:
    - option: name
      value: vnStat
    - option: description
      value: '"vnStat is a console-based network traffic monitor for Linux and BSD that keeps a log of network traffic for the selected interface(s)."'
    - option: install
      value: "{{ vnstat_install }}"
    - option: enabled
      value: "{{ vnstat_enabled }}"