roles/compute-diag/tasks/main.yml

---
# compute-diag/tasks/main.yml

- name: Create diag_dir subdirs
  file:
    dest="{{ diag_dir }}/{{ inventory_hostname }}"

- name: Compute node diag collection
  shell: "{{ item }} > {{ diag_dir }}/{{ inventory_hostname}}/{{ item | regex_replace('[^\\w-]', '_')}}"
  with_items:
   - "arp -n"
   - "brctl show"
   - "cat /etc/resolv.conf"
   - "ifconfig -a"
   - "route -n"