Ansible

AND/OR

 - name: stop app
  shell: pidof java | xargs -r kill -9 || /bin/true
  when: pid.stdout != "" and (appUpdated|changed or configUpdated|changed)

Overriding args to roles

 roles:
   - { role: app_user, name: Ian    }
   - { role: app_user, name: Terry  }
   - { role: app_user, name: Graham }
   - { role: app_user, name: John   }


Conditional roles

    - { role: hazelcast, when: target_env=='dev' } # hazelcast only required if providing service
    - { role: nginx, when: target_env=='dev' }
    - bootstrap # unconditional role

Role Dependencies

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