---
- name: Install Prometheus
  apt:
    update_cache: true
    name: prometheus
  register: apt_result
  retries: 3
  until: apt_result is succeeded

- name: Configure Prometheus
  template:
    src: prometheus/prometheus.yml.j2
    dest: /etc/prometheus/prometheus.yml
  notify: Restart Prometheus

- name: Configure Prometheus alert rules
  template:
    src: prometheus/alert.rules.yml.j2
    dest: /etc/prometheus/alert.rules.yml
  notify: Restart Prometheus

# We don't need to restart Prometheus when updating nodes
- name: Configure Prometheus nodes
  copy:
    content: "{{ prometheus_targets | to_nice_json }}"
    dest: /etc/prometheus/targets.json