skolo/ansible/switchboard/roles/install_prometheus_and_alert_to_pubsub/tasks/main.yml

- name: Check if Prometheus binary needs to be downloaded.
  stat:
    path:
      "{{ all.repo_root }}/skolo/build/{{ ansible_facts['system'] }}/{{
      ansible_facts['architecture'] }}/prometheus-{{ all.prometheus.version
      }}.linux-amd64/prometheus"
  register: prometheus_binary

- name: Download Prometheus binary.
  delegate_to: 127.0.0.1
  throttle: 1
  make:
    chdir: '{{ all.repo_root }}/skolo/'
    target:
      "download_prometheus_{{ ansible_facts['architecture'] }}_{{
      ansible_facts['system'] }}"
    params:
      PROMETHEUS_VERSION: '{{ all.prometheus.version }}'
  when: not prometheus_binary.stat.exists

- name: Copy over service file.
  become: true
  template:
    src: templates/prometheus.service
    dest: /etc/systemd/system/prometheus.service
    owner: root
    group: root
    mode: '0644'

- name: Copy over prometheus executable.
  become: true
  copy:
    src:
      "{{ all.repo_root }}/skolo/build/{{ ansible_facts['system'] }}/{{
      ansible_facts['architecture'] }}/prometheus-{{ all.prometheus.version
      }}.linux-amd64/prometheus"
    dest: /usr/local/bin/prometheus
    owner: root
    group: root
    mode: '0755'

- name: Copy over promtool executable.
  become: true
  copy:
    src:
      "{{ all.repo_root }}/skolo/build/{{ ansible_facts['system'] }}/{{
      ansible_facts['architecture'] }}/prometheus-{{ all.prometheus.version
      }}.linux-amd64/promtool"
    dest: /usr/local/bin/promtool
    owner: root
    group: root
    mode: '0755'

- name: Ensure /etc/prometheus directory exists.
  become: true
  file:
    path: /etc/prometheus
    state: directory
    owner: chrome-bot
    group: chrome-bot
    mode: '0755'

- name: Copy over prometheus config file.
  template:
    src: templates/prometheus.yml
    dest: /etc/prometheus/prometheus.yml
    owner: chrome-bot
    group: chrome-bot
    mode: '0644'

- name: Copy over alerts file.
  copy:
    src: files/alerts.yml
    dest: /etc/prometheus/alerts.yml
    owner: chrome-bot
    group: chrome-bot
    mode: '0644'

- name: Ensure tsdb directory exists.
  become: true
  file:
    path: /var/lib/prometheus/tsdb
    state: directory
    owner: chrome-bot
    group: chrome-bot
    mode: '0755'

- name: Load alert_to_pubsub_ansible executables.
  import_role:
    name: get_ansible_binaries
  vars:
    get_ansible_binaries_application: alert_to_pubsub_ansible
    get_ansible_binaries_version: '{{ alert_to_pubsub_ansible_version }}'

- name: Copy over alert_to_pubsub service file.
  become: true
  template:
    src: templates/alert_to_pubsub.service
    dest: /etc/systemd/system/alert_to_pubsub.service
    owner: root
    group: root
    mode: '0644'

- name: Copy over alert_to_pubsub_ansible executable.
  become: true
  copy:
    src:
      "{{ get_ansible_binaries_directory.path }}/build/{{
      ansible_facts['system'] }}/{{ ansible_facts['architecture']
      }}/alert_to_pubsub_ansible"
    dest: /usr/local/bin/alert_to_pubsub_ansible
    owner: root
    group: root
    mode: '0755'

- name: restart_prometheus
  become: true
  systemd:
    enabled: true
    state: restarted
    name: prometheus
    daemon_reload: true

- name: restart_alert_to_pubsub
  become: true
  systemd:
    enabled: true
    state: restarted
    name: alert_to_pubsub
    daemon_reload: true

- name: validate_prometheus_config
  command: /usr/local/bin/promtool check config /etc/prometheus/prometheus.yml

- name: validate_prometheus_rules
  command: /usr/local/bin/promtool check rules /etc/prometheus/alerts.yml