# roles/prometheus/tasks/main.yml  
---
- name: Create prometheus user
  user:
    name: prometheus
    system: yes
    shell: /bin/false

- name: Create prometheus directories
  file:
    path: "{{ item }}"
    state: directory
    owner: prometheus
    group: prometheus
  loop:
    - /etc/prometheus
    - /var/lib/prometheus

- name: Download Prometheus
  get_url:
    url: "https://github.com/prometheus/prometheus/releases/download/v{{ prometheus_version }}/prometheus-{{ prometheus_version }}.linux-amd64.tar.gz"
    dest: /tmp/prometheus.tar.gz

- name: Extract Prometheus
  unarchive:
    src: /tmp/prometheus.tar.gz
    dest: /opt/
    remote_src: yes
    owner: prometheus
    group: prometheus

- name: Configure Prometheus
  template:
    src: prometheus.yml.j2
    dest: /etc/prometheus/prometheus.yml
    owner: prometheus
    group: prometheus
  notify: restart prometheus

- name: Create Prometheus systemd service
  template:
    src: prometheus.service.j2
    dest: /etc/systemd/system/prometheus.service
  notify:
    - reload systemd
    - restart prometheus