self-hosting/roles/kubernetes/tasks/kubeadm-master.yml

---
# we get kubectl output to check if we have to add the node or not
# errors are ignored in case of the first initialization on the first master
- name: Getting kubectl output
  shell: "kubectl get nodes"
  register: kubectl_output
  changed_when: False
  check_mode: False
  failed_when: kubectl_output.rc != 0 and not 'did you specify the right host' in kubectl_output.stderr

- block:
    - name: Kubeadm init on first master in multimaster cluster
      shell: |
        kubeadm init \
          --config /tmp/kubeadm_config
          {%- if kubeadm_ignore_preflight_errors | length > 0 %} \
            --ignore-preflight-errors={{ kubeadm_ignore_preflight_errors }}
          {% endif %}
      register: kubeadm_output
      failed_when: "'Your Kubernetes master has initialized successfully' not in kubeadm_output.stdout"
      when: groups.k8s_masters | length > 1

    - name: Kubeadm init on sole master
      shell: |
        kubeadm init \
          --apiserver-advertise-address={{ vpn_ip }} \
          --pod-network-cidr={{ pod_subnet }} \
          --kubernetes-version {{ kubernetes_version }}
          {%- if kubeadm_ignore_preflight_errors | length > 0 %} \
            --ignore-preflight-errors={{ kubeadm_ignore_preflight_errors }}
          {% endif %}
      # flannel has trouble unless we restart the kubelet service
      notify: restart kubelet
      when:
        - groups.k8s_masters | length == 1
        - inventory_hostname == initial_master

    - name: Kubeadm output
      debug: var=kubeadm_output

  when: ansible_hostname not in kubectl_output.stdout

- name: Copying /etc/kubernetes/admin.conf to ~/.kube/config
  copy:
    src: /etc/kubernetes/admin.conf
    dest: ~/.kube/config
    remote_src: yes

- include: cni.yml

- name: Wait for master to be ready
  shell: "kubectl get nodes $(hostname) | tail -n+2 | awk '{ print $2 }'"
  register: result
  until: result.stdout.find("Ready") == 0
  retries: 36
  delay: 10
  changed_when: no

- meta: flush_handlers