ansible-nas/roles/promtail/tasks/main.yml

---
- name: Start Promtail
  block:
    - name: Check for Loki installation
      ansible.builtin.fail:
        msg: "Promtail requires Loki enabled and running as a write target, please set that up first."
      when: loki_enabled is false

    - name: Include Loki variables
      ansible.builtin.include_vars: ../../loki/defaults/main.yml

    - name: Create Promtail Directories
      ansible.builtin.file:
        path: "{{ item }}"
        state: directory
      with_items:
        - "{{ promtail_data_directory }}/config"
        - "{{ promtail_data_directory }}/data"

    - name: Template Promtail config
      ansible.builtin.template:
        src: config.yml
        dest: "{{ promtail_data_directory }}/config/config.yml"

    - name: Create Promtail Docker Container
      community.docker.docker_container:
        name: "{{ promtail_container_name }}"
        image: "{{ promtail_image_name }}:{{ promtail_image_version }}"
        pull: true
        command: "-config.file=/etc/promtail/config.yml"
        ports:
          - "{{ promtail_port }}:9080"
        volumes:
          - "{{ promtail_data_directory }}/config/config.yml:/etc/promtail/config.yml"
          - "{{ promtail_data_directory }}/data/:/data"
          - "/var/run/docker.sock:/var/run/docker.sock"
        restart_policy: unless-stopped
        memory: "{{ promtail_memory }}"
        labels:
          traefik.enable: "{{ promtail_available_externally | string }}"
          traefik.http.routers.promtail.rule: "Host(`{{ promtail_hostname }}.{{ ansible_nas_domain }}`)"
          traefik.http.routers.promtail.tls.certresolver: "letsencrypt"
          traefik.http.routers.promtail.tls.domains[0].main: "{{ ansible_nas_domain }}"
          traefik.http.routers.promtail.tls.domains[0].sans: "*.{{ ansible_nas_domain }}"
          traefik.http.services.promtail.loadbalancer.server.port: "9080"
  when: promtail_enabled is true

- name: Stop promtail
  block:
    - name: Stop promtail
      community.docker.docker_container:
        name: "{{ promtail_container_name }}"
        state: absent
  when: promtail_enabled is false