---
- name: Include OS-specific variables
  ansible.builtin.include_vars: "{{ ansible_os_family }}.yml"

- name: Install packages
  ansible.builtin.package:
    name: "{{ node_exporter_package }}"
    state: installed

- name: Allow prometheus user to read private key
  ansible.builtin.user:
    name: "{{ node_exporter_user }}"
    groups: hostkey
    append: true
  notify: Restart node_exporter

- name: Create config directory
  ansible.builtin.file:
    path: /etc/node_exporter
    state: directory
    mode: "0755"
    owner: root
    group: "{{ ansible_wheel }}"

- name: Create web-config
  ansible.builtin.template:
    dest: /etc/node_exporter/web-config.yml
    src: web-config.yml.j2
    mode: "0644"
    owner: root
    group: "{{ ansible_wheel }}"
  notify: Restart node_exporter

- name: Modify config
  ansible.builtin.lineinfile:
    path: /etc/default/prometheus-node-exporter
    regexp: "^ARGS="
    line: >-
      ARGS="--collector.filesystem.ignored-mount-points
      '^/(dev|proc|sys|run/(user|credentials/systemd-.+))($|/)'
      --collector.netclass.ignored-devices '^(br-|docker|veth).+$'
      --collector.netdev.device-exclude '^(br-|docker|veth).+$'
      --web.config=/etc/node_exporter/web-config.yml
      --collector.textfile.directory /var/lib/prometheus/node-exporter"
  notify: Restart node_exporter
  when: ansible_os_family == "RedHat"

- name: Enable service
  ansible.builtin.service:
    name: "{{ node_exporter_service }}"
    state: started
    enabled: true
    arguments: --web.config.file=/etc/node_exporter/web-config.yml
  when: ansible_os_family == "OpenBSD"

- name: Enable service
  ansible.builtin.service:
    name: "{{ node_exporter_service }}"
    state: started
    enabled: true
  when: ansible_os_family == "RedHat"