kubespray/roles/kubernetes/master/tasks/kubeadm-kubeconfig.yml

---
- name: Backup old configuration files
  copy:
    src: "{{ kube_config_dir }}/{{ item.src }}"
    dest: "{{ kube_config_dir }}/{{ item.dest }}"
    remote_src: yes
  with_items:
    - {src: admin.conf, dest: admin.conf.old}
    - {src: kubelet.conf, dest: kubelet.conf.old}
    - {src: controller-manager.conf, dest: controller-manager.conf.old}
    - {src: scheduler.conf, dest: scheduler.conf.old}
  ignore_errors: yes

- name: Remove old configuration files
  file:
    path: "{{ kube_config_dir }}/{{ item }}"
    state: absent
  with_items:
    - admin.conf
    - kubelet.conf
    - controller-manager.conf
    - scheduler.conf

- name: Generate new configuration files
  command: "{{ bin_dir }}/kubeadm init phase kubeconfig all --config={{ kube_config_dir }}/kubeadm-config.yaml"
  when: kubeadm_version is version('v1.13.0', '>=')
  ignore_errors: yes

- name: Generate new configuration files
  command: "{{ bin_dir }}/kubeadm alpha phase kubeconfig all --config={{ kube_config_dir }}/kubeadm-config.yaml"
  when: kubeadm_version is version('v1.13.0', '<')
  ignore_errors: yes