---
- name: k8s-units playbook
  hosts: k8s-dev
  become: true
  roles:
    - common
    - docker
    - k8s-init-machines

- name: k8s-units playbook 2
  hosts: k8s-dev-master-first
  become: true
  vars_prompt:
    - name: "k8s_master_ip"
      prompt: "Enter the Apiserver advertise address, example: 192.168.1.200"
      private: no
  roles:
    - k8s-init-first-master

- name: k8s-units playbook 3
  hosts: k8s-dev-worker
  become: true
  roles:
    - k8s-init-workers

- name: k8s-units playbook 4
  hosts: k8s-dev-master-first
  become: true
  roles:
    - k8s-join-workers-to-first-master
...