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

#- name: k8s playbook
#  hosts: k8s-master
#  roles:
#    - { role: common, become: true }
#
#- name: k8s playbook
#  hosts: k8s-worker
#  roles:
#    - { role: common, become: true }
...