ansible-collection-prometheus/roles/prometheus/tasks/prometheus.yml

---
  
- name: render /etc/prometheus/prometheus.yml
  ansible.builtin.template:
    src: etc/prometheus/prometheus.yml.j2
    dest: /etc/prometheus/prometheus.yml
    owner: root
    group: root
    mode: 0644
    validate: /usr/bin/promtool check config %s
  vars:
    jobs: "{{ hostvars[inventory_hostname] | dict2items | selectattr('key', 'match', '^prometheus_job_.+$') | map(attribute='value') | list }}"
  notify: restart prometheus

- name: render /etc/prometheus/alert_rules.yml
  ansible.builtin.template:
    src: etc/prometheus/alert_rules.yml.j2
    dest: /etc/prometheus/alert_rules.yml
    owner: root
    group: root
    mode: 0644
    validate: /usr/bin/promtool check rules %s
  vars:
    alert_groups: "{{ hostvars[inventory_hostname] | dict2items | selectattr('key', 'match', '^prometheus_job_.+$') | map(attribute='value') | map(attribute='group') | select('defined') | unique | default([prometheus_job_default_group_name]) }}"
    jobs: "{{ hostvars[inventory_hostname] | dict2items | selectattr('key', 'match', '^prometheus_job_.+$') | map(attribute='value') | list }}"
  notify: restart prometheus

- name: render /etc/default/prometheus
  ansible.builtin.template:
    src: etc/default/prometheus.j2
    dest: /etc/default/prometheus
    owner: root
    group: root
    mode: 0644
  notify: restart prometheus