Add kubeadm controlplaneEndpoint

Nginx LB(default)
Other LB by kubeadm controlplane

roles/kubernetes/master/tasks/kubeadm-setup.yml

@@ -91,6 +91,12 @@
     kubeadmConfig_api_version: v1alpha2
   when: kubeadm_output.stdout|version_compare('v1.11.0', '>=')
 
+# Nginx LB(default), If kubeadm_config_api_fqdn is defined, use other LB by kubeadm controlPlaneEndpoint.
+- name: set kubeadm_config_api_fqdn define
+  set_fact:
+    kubeadm_config_api_fqdn: "{{ apiserver_loadbalancer_domain_name|default('lb-apiserver.kubernetes.local') }}"
+  when: loadbalancer_apiserver is defined
+
 - name: kubeadm | Create kubeadm config
   template:
     src: "kubeadm-config.{{ kubeadmConfig_api_version }}.yaml.j2"

roles/kubernetes/master/templates/kubeadm-config.v1alpha1.yaml.j2

@@ -3,6 +3,9 @@ kind: MasterConfiguration
 api:
   advertiseAddress: {{ ip | default(ansible_default_ipv4.address) }}
   bindPort: {{ kube_apiserver_port }}
+{% if groups['kube-master'] | length > 1 and kubeadm_config_api_fqdn is defined %}
+  controlPlaneEndpoint: {{ kubeadm_config_api_fqdn }}
+{% endif %}
 etcd:
   endpoints:
 {% for endpoint in etcd_access_addresses.split(',') %}

roles/kubernetes/master/templates/kubeadm-config.v1alpha2.yaml.j2

@@ -3,6 +3,9 @@ kind: MasterConfiguration
 api:
   advertiseAddress: {{ ip | default(ansible_default_ipv4.address) }}
   bindPort: {{ kube_apiserver_port }}
+{% if groups['kube-master'] | length > 1 and kubeadm_config_api_fqdn is defined %}
+  controlPlaneEndpoint: {{ kubeadm_config_api_fqdn }}
+{% endif %}
 etcd:
   external:
       endpoints: