install.yml

---
- name: Ensure unzip package is available
  package:
    name: unzip
    state: present
    update_cache: True

- name: Create promtail group
  group:
    name: "{{ promtail_system_group }}"
    state: present
    system: True
  when: promtail_system_group != "root"

- name: Create the promtail user
  user:
    name: "{{ promtail_system_user }}"
    group: "{{ promtail_system_group }}"
    groups: "{{ promtail_user_additional_groups }}"
    append: True
    shell: /usr/sbin/nologin
    system: True
    createhome: False
    home: /
  when: promtail_system_user != "root"

- name: Ensure /usr/local/bin exists
  file:
    path: /usr/local/bin
    state: directory
    mode: 0755

- name: Create config directories
  file:
    path: "{{ item }}"
    state: directory
    owner: root
    group: "{{ promtail_system_group }}"
    mode: 0770
  loop:
    - "{{ promtail_config_dir }}"
    - "{{ promtail_config_file_sd_dir }}"
    - "{{ promtail_positions_directory }}"

- name: Create application dirs
  file:
    path: "{{ item }}"
    state: directory
    owner: "{{ promtail_system_user }}"
    group: "{{ promtail_system_group }}"
    mode: 0755
  with_items:
    - "{{ promtail_install_dir }}"
    - "{{ promtail_install_dir }}/{{ promtail_version }}"

- name: Check promtail binary
  stat:
    path: "{{ promtail_install_dir }}/{{ promtail_version }}/promtail-linux-{{ go_arch }}"
  register: promtail_binary

- name: Download promtail binaries
  get_url:
    url: "{{ promtail_dist_url }}"
    dest: "{{ promtail_tmp_dir }}/{{ promtail_version }}_promtail-linux-{{ go_arch }}.zip"
    force: True
    checksum: "sha256:{{ __promtail_checksum }}"
  when: not promtail_binary.stat.exists

- name: Unpack promtail binaries
  ignore_errors: "{{ ansible_check_mode }}"
  unarchive:
    src: "{{ promtail_tmp_dir }}/{{ promtail_version }}_promtail-linux-{{ go_arch }}.zip"
    dest: "{{ promtail_install_dir }}/{{ promtail_version }}"
    creates: "{{ promtail_install_dir }}/{{ promtail_version }}/promtail-linux-{{ go_arch }}"
    mode: 0755
    remote_src: True

- name: Create symlink to latest version
  notify:
    - Restart promtail
  ignore_errors: "{{ ansible_check_mode }}"
  file:
    state: link
    src: "{{ promtail_install_dir }}/{{ promtail_version }}/promtail-linux-{{ go_arch }}"
    dest: /usr/local/bin/promtail
    mode: 0755

- name: Write config
  notify:
    - Restart promtail
  template:
    src: config.j2
    dest: "{{ promtail_config_file }}"
    owner: root
    group: "{{ promtail_system_group }}"
    mode: 0644

- name: Create systemd service unit
  notify:
    - Restart promtail
  template:
    src: service.j2
    dest: /etc/systemd/system/promtail.service
    mode: 0644