linux - ansible perform additional action only if host rebooted -

i've got playbook run on hosts on as-needed basis. i'm running problem , haven't been able find answer myself.

we have hosts running application we're building, , there few servers updates not done automatically. goal these updates when needed via ansible. problem this: if during update process host rebooted, there additional steps need taken. however, if host did not reboot, these steps need omitted.

here's yml file looks like:

--- - name: run updates on demand   hosts: static-hosts   roles:     - update_system     - update_component1     - update_component2 

here need kind of check. if steps above caused host reboot, following. if did not reboot, stop here.

    - rebuild_component1     - rebuild_component2 

any suggestions? may going wrong, if that's case i'd appreciate if pointed in right direction. thanks!

---

thought of possible solution, not yet tested. since it's ansible reboot (which wasn't listed in original yml file), 1 way might doable following yml:

--- - name: run updates on demand   hosts: static-hosts   roles:     - update_system     - update_component1     - update_component2   register: updated  - name: reboot   shell: shutdown -r   when: updated.changed  - name: wait ssh   (usual "wait ssh block")  - name: rebuild if rebooted   roles:     - rebuild_component1     - rebuild_component2   when: updated.changed 

what i'm not sure if updated.changed triggers reboot (and therefore rebuild) if updates require it.

my "possible solution" listed above works.