--- 
- hosts: leftcoastlab
  vars:
    PROM_URL: "https://github.com/prometheus/node_exporter/releases/download/v1.3.1/node_exporter-1.3.1.linux-amd64.tar.gz"
  become: yes
  tasks:
    - name: Include Global Vars
      include_vars:
        dir: ../vars

    - name: Download prometheus Node Explorer static binary tarball
      get_url:
        url: "{{ PROM_URL }}"
        dest: /tmp/prom-node-exporer.tar.gz

    - name: Untar node exporter tarball package
      unarchive:
        src: /tmp/prom-node-exporer.tar.gz
        dest: /opt/prom-node-exporter
        creates: /opt/prom-node-exporter
        remote_src: yes

    - name: Copy Unit file for node exporter
      copy:
        src: ../files/services/node_exporter.service
        dest: /etc/systemd/system/node_exporter.service

    - name:  Install Node Exporter Service and Start
      systemd:
        daemon_reload: yes
        name: node_exporter
        state: restarted
        enabled: yes

    - name: Ensure Prom Docker Volume Exists
      community.docker.docker_volume:
        name: prometheus-volume

    - name: Ensure Config directory exists
      file:
        path: /opt/prometheus
        state: directory

    - name: Copy Prometheus template to target directory
      template:
        dest: /opt/prometheus/prometheus.yml
        src: ../templates/prometheus.yml.j2

    - name: Setup Prometheus (Containerized) Service
      community.docker.docker_container:
        name: prometheus
        image: prom/prometheus
        pull: yes
        restart_policy: always
        recreate: yes
        volumes:
          - "prometheus-volume:/prometheus"
          - "/opt/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml"
        ports:
          - "{{PROM_PORT}}:{{PROM_PORT}}"