kubespray/roles/kubernetes/node/tasks/gen_tokens.yml

---
- name: tokens | copy the token gen script
  copy:
    src=kube-gen-token.sh
    dest={{ kube_script_dir }}
    mode=u+x
  when: inventory_hostname == groups['kube-master'][0]

- name: tokens | generate tokens for master components
  command: "{{ kube_script_dir }}/kube-gen-token.sh {{ item[0] }}-{{ item[1] }}"
  environment:
    TOKEN_DIR: "{{ kube_token_dir }}"
  with_nested:
    - [ "system:kubectl" ]
    - "{{ groups['kube-master'] }}"
  register: gentoken
  changed_when: "'Added' in gentoken.stdout"
  when: inventory_hostname == groups['kube-master'][0]

- name: tokens | generate tokens for node components
  command: "{{ kube_script_dir }}/kube-gen-token.sh {{ item[0] }}-{{ item[1] }}"
  environment:
    TOKEN_DIR: "{{ kube_token_dir }}"
  with_nested:
    - [ 'system:kubelet' ]
    - "{{ groups['kube-node'] }}"
  register: gentoken
  changed_when: "'Added' in gentoken.stdout"
  when: inventory_hostname == groups['kube-master'][0]

- name: tokens | generate tokens for calico
  command: "{{ kube_script_dir }}/kube-gen-token.sh {{ item[0] }}-{{ item[1] }}"
  environment:
    TOKEN_DIR: "{{ kube_token_dir }}"
  with_nested:
    - [ "system:calico" ]
    - "{{ groups['k8s-cluster'] }}"
  register: gentoken
  changed_when: "'Added' in gentoken.stdout"
  when: kube_network_plugin == "calico"
  delegate_to: "{{ groups['kube-master'][0] }}"

- name: tokens | get the calico token values
  slurp:
    src: "{{ kube_token_dir }}/system:calico-{{ inventory_hostname }}.token"
  register: calico_token
  when: kube_network_plugin == "calico"
  delegate_to: "{{ groups['kube-master'][0] }}"