---
- name: get failed systemd units
  shell: >
    systemctl list-units --failed --plain --no-legend --no-pager |
    awk '{print $1}'
  register: systemd_status
  changed_when: False

- name: Fails if we find failed units
  assert:
    fail_msg: >
      Failed units were found: {{ systemd_status.stdout_lines|join(',') }}
    success_msg: >
      No failed unit were found
    that:
      - systemd_status.stdout_lines|length == 0