ansible/roles/telegraf/tasks/configure.yml

---
- name: Retrieve ec2 facts
  ec2_metadata_facts:
  when: telegraf_aws_tags

- name: Retrieve all ec2 tags on the instance
  ec2_tag:
    region: "{{ ansible_ec2_placement_region }}"
    resource: "{{ ansible_ec2_instance_id }}"
    state: list
  when: telegraf_aws_tags
  register: ec2_tags

- name: get the rpm or apt package facts
  package_facts:
    manager: "auto"

- name: Set templatized Telegraf configuration
  template:
    src: "{{ telegraf_configuration_template }}"
    dest: "{{ telegraf_configuration_dir }}/telegraf.conf"
    force: yes
    backup: yes
    owner: telegraf
    group: telegraf
    mode: 0740
  when: telegraf_template_configuration
  # If config changes, restart telegraf and confirm it remained running
  notify:
    - "restart telegraf"
    - "pause"
    - "check status"
    - "assert running"

- name: Test for sysvinit script
  stat:
    path: /etc/init.d/telegraf
  register: telegraf_sysvinit_script

- name: Modify user Telegraf should run as [sysvinit]
  replace:
    path: /etc/init.d/telegraf
    regexp: USER=.*
    replace: USER={{ telegraf_runas_user }}
  when: telegraf_runas_user != "telegraf" and telegraf_sysvinit_script.stat.exists

- name: Modify group Telegraf should run as [sysvinit]
  replace:
    path: /etc/init.d/telegraf
    regexp: GROUP=.*
    replace: GROUP={{ telegraf_runas_group }}
  when: telegraf_runas_group != "telegraf" and telegraf_sysvinit_script.stat.exists

- name: Create systemd service directory [systemd]
  file:
    path: /etc/systemd/system/telegraf.service.d
    state: directory
  when: telegraf_runas_user != "telegraf" and not telegraf_sysvinit_script.stat.exists

- name: Modify user Telegraf should run as [systemd]
  template:
    src: systemd/system/telegraf.service.d/override.conf
    dest: /etc/systemd/system/telegraf.service.d/override.conf
  when: telegraf_runas_user != "telegraf" and not telegraf_sysvinit_script.stat.exists
  register: telegraf_unit_file_updated

- name: Reload systemd configuration [systemd]
  systemd:
    daemon_reload: yes
  when: telegraf_unit_file_updated is defined and telegraf_unit_file_updated.changed