- id: task_on_master_1
  type: shell
  version: 2.0.0
  role: ['master']
  required_for: ['task_on_master_2']
  parameters:
    cmd: 'echo 1 > /tmp/master_task'

- id: task_on_master_2
  type: shell
  version: 2.0.0
  role: ['master']
  parameters:
    cmd: 'echo 2 >> /tmp/master_task'

- id: task_on_master_3
  type: shell
  version: 2.0.0
  role: ['master']
  requires: ['task_on_master_2']
  parameters:
    cmd: 'echo 3 >> /tmp/master_task'