I've been trying to find a way of accomplishing this (what the subject 
says). I thought on using blocks, for example:


- block:
  - name: run task
    command: <my-command>
    register: command_result
    failed_when: command_result.changed
  rescue:
  - name: stop task on all other nodes
    command: <stop-command>
    delegate_to: '{{ item }}'
    with_items: '{{ groups.all }}'

Can you think of any other alternative?

Thanks!

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