---
- name: Collect OS info and generate report
  hosts: all
  gather_facts: yes
  tasks:
    - name: Build server info string
      set_fact:
        server_info: "{{ inventory_hostname }} - {{ ansible_distribution }} {{ ansible_distribution_version }}"

    - name: Add server info to a central list
      run_once: true
      set_fact:
        os_report: []

    - name: Collect server info into report
      set_fact:
        os_report: "{{ os_report + [hostvars[item].server_info] }}"
      with_items: "{{ ansible_play_hosts }}"
      run_once: true

    - name: Write report to file on control node
      copy:
        dest: "./os-report.txt"
        content: |
          {% for line in os_report %}
          {{ line }}
          {% endfor %}
      run_once: true
      delegate_to: localhost