---
- name: perform rollback in case of errrors
  hosts: localhost
  gather_facts: no
  tasks:
    - block:
        - name: doing something
          debug:
            msg: hello

        - name: fail
          fail:
          register: outcome

        - name: this never happens
          debug:
            msg: i am never executed :(

      rescue:
        - name: recover from failure
          debug:
            msg: failure recovery

      always:
        - name: this always runs, regardless of outcome
          debug:
            msg: i am always executed :)