1 files changed, 45 insertions, 0 deletions
diff --git a/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
new file mode 100644
index 00000000..f7e25fb4
--- /dev/null
+++ b/roles/kubernetes/kubeadm/master/tasks/secondary-masters.yml
@@ -0,0 +1,45 @@
+---
+- 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