---
- name: Install packages
  ansible.builtin.package:
    name: >-
      {% if ansible_distribution in ["Fedora", "OpenBSD"] -%}
      {{ "node_exporter" -}}
      {% else -%}
      {{ "golang-github-prometheus-node-exporter" -}}
      {% endif -%}
    state: installed

- name: Allow prometheus user to read private key
  ansible.builtin.user:
    name: >-
      {% if ansible_distribution == "OpenBSD" -%}
      {{ "_nodeexporter" -}}
      {% else -%}
      {{ "prometheus" -}}
      {% endif -%}
    groups: hostkey
    append: true
    create_home: false
  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: Create textfile collector directory
  ansible.builtin.file:
    path: /var/db/node-exporter
    state: directory
    mode: 0755
    owner: _nodeexporter
    group: _nodeexporter
  when: ansible_os_family == "OpenBSD"

- name: Create directory for textfile collector scripts
  ansible.builtin.file:
    path: /usr/local/libexec/node-exporter
    state: directory
    mode: 0755
    owner: root
    group: "{{ ansible_wheel }}"

- name: Add script for running textfile collector scripts
  ansible.builtin.copy:
    dest: /usr/local/sbin/node-exporter-run-textfile-collector
    src: node-exporter-run-textfile-collector.sh
    mode: 0755
    owner: root
    group: "{{ ansible_wheel }}"

- name: Add cron job for running textfile collector scripts
  ansible.builtin.cron:
    name: node-exporter-run-textfile-collector
    job: /usr/local/sbin/node-exporter-run-textfile-collector
    minute: "*/10"

- name: Modify config (pre 1.5.0)
  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"
    - ansible_distribution != "Fedora"

- 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.file=/etc/node_exporter/web-config.yml
      --collector.textfile.directory=/var/lib/prometheus/node-exporter"
  notify: Restart node_exporter
  when:
    - ansible_distribution == "Fedora"

- name: Install disk and raid monitoring scripts
  ansible.builtin.copy:
    dest: "/usr/local/libexec/node-exporter/{{ item }}"
    src: "{{ item }}"
    mode: "0755"
    owner: root
    group: "{{ ansible_wheel }}"
  with_items:
    - md_info.sh
    - smartmon.sh
  when:
    - ansible_virtualization_role == "host"
    - ansible_os_family == "RedHat"

- name: Enable service
  ansible.builtin.service:
    name: node_exporter
    state: started
    enabled: true
    arguments: >-
      --web.config.file=/etc/node_exporter/web-config.yml
      --collector.textfile.directory=/var/db/node-exporter
  notify: Restart node_exporter
  when: ansible_os_family == "OpenBSD"

- name: Enable service
  ansible.builtin.service:
    name: prometheus-node-exporter
    state: started
    enabled: true
  when: ansible_os_family == "RedHat"