ansible-loki-role/tasks/install.yml

---
- name: Create system group {{ loki_group }}
  ansible.builtin.group:
    name: "{{ loki_group }}"
    system: true
    state: present

- name: Create system user {{ loki_user }}
  ansible.builtin.user:
    name: "{{ loki_user }}"
    system: true
    shell: "/usr/sbin/nologin"
    group: "{{ loki_group }}"
    createhome: false
    home: "{{ loki_storage_dir }}"

- name: Create loki data directory
  ansible.builtin.file:
    path: "{{ item }}"
    state: directory
    owner: loki
    group: loki
    mode: "0755"
  with_items:
    - "{{ loki_storage_dir }}"
    - "{{ loki_storage_dir }}/index"
    - "{{ loki_storage_dir }}/chunks"
  when: ('loki' in loki_bins)

- name: Create Bin directories
  ansible.builtin.file:
    path: "/opt/loki"
    state: directory
    owner: root
    group: root
    mode: "0755"

- name: Create loki configuration directories
  ansible.builtin.file:
    path: "{{ item }}"
    state: directory
    owner: root
    group: "{{ loki_group }}"
    mode: "0770"
  with_items:
    - "{{ loki_config_dir }}"

- name: Install bin
  block:
    - name: Unpack binaries
      ansible.builtin.unarchive:
        remote_src: true
        src: "https://github.com/grafana/loki/releases/download/v{{ loki_version }}/{{ item }}-linux-{{ go_arch }}.zip"
        dest: "/opt/loki/"
        mode: "0755"
        owner: root
        group: root
      loop: "{{ loki_bins }}"
      notify:
        - restart loki

    - name: Create bin symlink
      ansible.builtin.file:
        src: "/opt/loki/{{ item }}-linux-{{ go_arch }}"
        dest: "/usr/local/bin/{{ item }}"
        state: link
      loop: "{{ loki_bins }}"
      notify:
        - restart loki

- name: Create systemd service unit
  ansible.builtin.template:
    src: "{{ item }}.service.j2"
    dest: "/etc/systemd/system/{{ item }}.service"
    owner: root
    group: root
    mode: "0644"
  notify: "restart {{ item }}"
  loop: "{{ loki_bins }}"
  when: item == 'loki' or item == 'promtail'

- name: Find temps files to del
  ansible.builtin.find:
    paths: /tmp
    file_type: file
    patterns: "loki-*-linux-{{ go_arch }}.zip,promtail-*-linux-{{ go_arch }}.zip"
    excludes: "loki-{{ loki_version }}-linux-{{ go_arch }}.zip,promtail-{{ loki_version }}-linux-{{ go_arch }}.zip"
  register: to_del

- name: Clean temp files
  ansible.builtin.file:
    path: "{{ item.path }}"
    state: absent
  loop: "{{ to_del.files }}"