ffmyk-ansible/roles/install_monitoring/tasks/install_vnstat.yml

---
- name: install vnstat
  pacman:
      name: vnstat
      state: present

- name: start and enable vnstat service
  systemd:
      name: vnstat.service
      enabled: yes
      state: started

- name: add interfaces to vnstat for batman interfaces
  command: /usr/bin/vnstat -u -i bat{{ item.name }}
  args:
      creates: '/var/lib/vnstat/bat{{ item.name }}'
  with_items: "{{ sites }}"
  when: "'fastd' in group_names"

- name: add interfaces to vnstat for uplink interfaces
  command: /usr/bin/vnstat -u -i bb{{ hostvars[item]['wireguard_bb_name'] }}
  args:
      creates: "/var/lib/vnstat/bb{{ hostvars[item]['wireguard_bb_name'] }}"
  with_items:
      - "{{ groups['uplink'] }}"
  when: "'fastd' in group_names"

- name: add interfaces to vnstat for outgoing v4 interface
  command: /usr/bin/vnstat -u -i {{ ansible_default_ipv4.interface }}
  args:
      creates: '/var/lib/vnstat/{{ ansible_default_ipv4.interface }}'

- name: add interfaces to vnstat for outgoing v6 interface
  command: /usr/bin/vnstat -u -i {{ ansible_default_ipv6.interface }}
  args:
      creates: '/var/lib/vnstat/{{ ansible_default_ipv6.interface }}'

- name: add output folder for vnstat graphs
  file:
      path: /srv/http/vnstat
      state: directory

- name: install gd which is needed for graph generation
  pacman:
      name: gd
      state: present

- name: add bash script to generate vnstat graphs
  copy:
      src: vnstat.sh
      dest: /usr/local/bin/vnstat.sh
      mode: 0744

- name: add cronjob to generate vnstat graphs
  cron:
      name: vnstat
      minute: '*/5'
      user: root
      cron_file: vnstat
      job: '/usr/local/bin/vnstat.sh'

- name: add vnstat nginx config
  copy:
      src: vnstat
      dest: /etc/nginx/sites-available/vnstat
  notify: reload nginx

- name: enable vnstat nginx config
  file:
      src: /etc/nginx/sites-available/vnstat
      dest: /etc/nginx/sites-enabled/vnstat
      state: link
  notify: reload nginx