ansible waiting for reboot, really really works!

ansible-reboot.yaml

- name: 'check if reboot is required'
  shell: if [ $(readlink -f /vmlinuz) != /boot/vmlinuz-$(uname -r) ]; then echo 'yes'; else echo 'no'; fi
  ignore_errors: true
  register: reboot

- name: 'reboot...'
  shell: nohup bash -c 'sleep 2 && shutdown -r now "Ansible kernel update applied"' &
  async: 0
  poll: 0
  ignore_errors: true
  when: reboot.stdout.find('yes') != -1
  register: rebooting

- name: 'waiting...'
  local_action: wait_for host={{ ansible_host | default(inventory_hostname,boolean=True) }} search_regex='OpenSSH' port=22 state='started' delay=30 timeout=300
  become: no
  when: rebooting|changed

nohup bash -c 'sleep 2 && shutdown -r now "Ansible kernel update applied"' &

This is the magic, background reboot in the future, give 2 seconds to ansible/ssh disconnect from remote host

Very nice!

Works for me in 2.2.0

Hello,

Good work, but unfortunatelly I get this:

"bash: shutdown: command not found", "stdout": "", "stdout_lines": [], "warnings": []}

And the playbook looks like this:

`---

• hosts: web1
  remote_user: razvan
  become: True
  become_method: su
  tasks:

  • name: install nmap
    yum: pkg=nmap state=latest

  • name: 'reboot...'
    shell: nohup bash -c 'sleep 2 && shutdown -r now "Instalat NMAP"'
    async: 0
    poll: 0
    register: rebooting

  • name: 'waiting...'
    local_action: wait_for host=web1 search_regex='OpenSSH' port=22 state='started' delay=30 timeout=300
    become: True
    become_method: su
    when: rebooting|changed`

Nice work!

Saved me a massive headache because the solution given by Ansible here doesn't work... You should let them know of yours!

Thanks

Thank you @drrzmr!!! I was trying to get something functional put together from three examples, none of which worked on their own. This write-up is doing a favor for the entire Ansible community. Much appreciated.