main.yml

---

- name: Install node_exporter
  apt:
    name: prometheus-node-exporter
    state: present
  when: ansible_distribution_major_version|int >= 10
  tags:
    - prometheus
    - prometheus-exporter

- name: Install node_exporter (stretch)
  apt:
    name: prometheus-node-exporter
    state: present
    default_release: stretch-backports
  when: ansible_distribution_major_version|int == 9
  tags:
    - prometheus
    - prometheus-exporter

- name: Install additional node_exporter collectors
  apt:
    name: prometheus-node-exporter-collectors
    state: present
  when: ansible_distribution_major_version|int >= 11
  tags:
    - prometheus
    - prometheus-exporter

- name: Ensure smartmontools is present only on bare-metal hosts
  apt:
    name: smartmontools
    state: >-
      {% if force_smartmontools_on_vm_guest or
        (ansible_virtualization_role is defined
          and not ansible_virtualization_role == "guest") -%}
        present
      {%- else -%}
        absent
      {%- endif %}

- name: Configure node_exporter
  template:
    src: prometheus-node-exporter.j2
    dest: /etc/default/prometheus-node-exporter
    owner: root
    group: root
    mode: "0644"
  notify:
    - Restart node_exporter
  tags:
    - prometheus
    - prometheus-exporter
    - config

- name: Configure Prometheus server to scrape us
  template:
    src: scrape.yml.j2
    dest: "/etc/prometheus/scrape/node_{{ ansible_fqdn }}.yml"
    owner: root
    group: root
    mode: "0644"
  delegate_to: "{{ prometheus_host }}"
  tags:
    - prometheus
    - prometheus-exporter
    - config

- import_tasks: needrestart.yml