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

---

- name: render alertmanager runtime arguments
  ansible.builtin.lineinfile:
    path: /etc/default/prometheus-alertmanager
    regexp: "^ARGS=.*$"
    line: >-
      ARGS="{{ alertmanager_arguments }}"
    insertbefore: BOF
  notify: restart alertmanager

- name: render alertmanager config template
  ansible.builtin.template:
    src: alertmanager.yml.j2
    dest: /etc/prometheus/alertmanager.yml
    owner: root
    group: prometheus
    mode: 0640
    validate: /usr/bin/amtool check-config %s
  notify: reload alertmanager

- name: render alertmanager notification templates
  ansible.builtin.copy:
    content: "{{ item.content }}"
    dest: "{{ item.path }}"
    owner: root
    group: prometheus
    mode: 0640
  loop: "{{ notification_templates }}"
  notify: reload alertmanager