Merge pull request #11568 from VannTen/cleanup/dont_rely_on_kube_node_existing

Only require minimum structure in inventory, part II

roles/kubernetes/control-plane/templates/kubeadm-config.v1beta3.yaml.j2

@@ -16,7 +16,7 @@ nodeRegistration:
 {% if kube_override_hostname | default('') %}
   name: "{{ kube_override_hostname }}"
 {% endif %}
-{% if inventory_hostname in groups['kube_control_plane'] and inventory_hostname not in groups['kube_node'] %}
+{% if 'kube_control_plane' in group_names and 'kube_node' not in group_names %}
   taints:
   - effect: NoSchedule
     key: node-role.kubernetes.io/control-plane

roles/kubernetes/control-plane/templates/kubeadm-controlplane.v1beta3.yaml.j2

@@ -24,7 +24,7 @@ controlPlane:
 nodeRegistration:
   name: {{ kube_override_hostname | default(inventory_hostname) }}
   criSocket: {{ cri_socket }}
-{% if inventory_hostname in groups['kube_control_plane'] and inventory_hostname not in groups['kube_node'] %}
+{% if 'kube_control_plane' in group_names and 'kube_node' not in group_names %}
   taints:
   - effect: NoSchedule
     key: node-role.kubernetes.io/control-plane

roles/kubernetes/node/defaults/main.yml

@@ -28,7 +28,7 @@ kubelet_systemd_wants_dependencies: []
 
 # List of secure IPs for kubelet
 kube_node_addresses: >-
-  {%- for host in (groups['kube_control_plane'] + groups['kube_node'] + groups['etcd']) | unique -%}
+  {%- for host in (groups['k8s_cluster'] | union(groups['etcd'])) -%}
     {{ hostvars[host]['ip'] | default(fallback_ips[host]) }}{{ ' ' if not loop.last else '' }}
   {%- endfor -%}
 kubelet_secure_addresses: "localhost link-local {{ kube_pods_subnet }} {{ kube_node_addresses }}"