---
- name: fetch secrets needed for secondary master
  run_once: true
  delegate_to: "{{ groups['_kubernetes_primary_master_'] | first }}"
  block:

  - name: fetch list of current nodes
    command: kubectl --kubeconfig /etc/kubernetes/admin.conf get nodes -o name
    changed_when: False
    check_mode: no
    register: kubectl_node_list

  - name: save list of current nodes
    set_fact:
      kubernetes_current_nodes: "{{ kubectl_node_list.stdout_lines | map('replace', 'node/', '') | list }}"

  - name: upload certs
    when: "groups['_kubernetes_masters_'] | map('extract', hostvars) | map(attribute='host_name') | difference(kubernetes_current_nodes) | length > 0"
    command: kubeadm init phase upload-certs --experimental-upload-certs
    check_mode: no
    register: kubeadm_upload_certs


- name: extracting encryption key for certs
  set_fact:
    kubeadm_upload_certs_key: "{% if kubeadm_upload_certs.stdout is defined %}{{ kubeadm_upload_certs.stdout_lines | last }}{% endif %}"

- name: join kubernetes secondary master node
  command: "kubeadm join 127.0.0.1:{{ kubernetes_api_lb_port | default('6443') }} --apiserver-bind-port 6442{% if kubernetes_cri_socket is defined %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}' --experimental-control-plane --certificate-key {{ kubeadm_upload_certs_key }}"
  args:
    creates: /etc/kubernetes/kubelet.conf
  register: kubeadm_join

- name: dump output of kubeadm join to log file
  when: kubeadm_join is changed
  # This is not a handler by design to make sure this action runs at this point of the play.
  copy: # noqa 503
    content: "{{ kubeadm_join.stdout }}\n"
    dest: /etc/kubernetes/kubeadm-join.log

  # TODO: acutally check if node has registered
- name: give the new master(s) a moment to register
  when: kubeadm_join is changed
  pause: # noqa 503
    seconds: 5