rebooting and detecting failure

[pixel fairy]

https://support.ansible.com/hc/en-us/articles/201958037-Reboot-a-server-and-wait-for-it-to-come-back

- name: restart machine
  command: shutdown -r now "Ansible updates triggered"
  async: 0
  poll: 0
  ignore_errors: true

if your ignoring errors, is there a way to detect failure to reboot?

not that i've ever seen it happen, but still like to know.