Add HAProxy as internal loadbalancer (#4480)

roles/kubernetes/node/tasks/haproxy.yml

@@ -0,0 +1,25 @@
+---
+- name: haproxy | Cleanup potentially deployed nginx-proxy
+  file:
+    path: "{{ kube_manifest_dir }}/nginx-proxy.yml"
+    state: absent
+
+- name: haproxy | Write static pod
+  template:
+    src: manifests/haproxy.manifest.j2
+    dest: "{{ kube_manifest_dir }}/haproxy.yml"
+
+- name: haproxy | Make haproxy directory
+  file:
+    path: "{{ haproxy_config_dir }}"
+    state: directory
+    mode: 0700
+    owner: root
+
+- name: haproxy | Write haproxy configuration
+  template:
+    src: haproxy.cfg.j2
+    dest: "{{ haproxy_config_dir }}/haproxy.cfg"
+    owner: root
+    mode: 0755
+    backup: yes

roles/kubernetes/node/tasks/main.yml

@@ -18,10 +18,15 @@
     - kubelet
 
 - import_tasks: nginx-proxy.yml
-  when: is_kube_master == false and loadbalancer_apiserver_localhost
+  when: is_kube_master == false and loadbalancer_apiserver_localhost and loadbalancer_apiserver_type == 'nginx'
   tags:
     - nginx
 
+- import_tasks: haproxy.yml
+  when: is_kube_master == false and loadbalancer_apiserver_localhost and loadbalancer_apiserver_type == 'haproxy'
+  tags:
+    - haproxy
+
 - name: Make sure dynamic kubelet configuration directory is writeable
   file:
     path: "{{ dynamic_kubelet_configuration_dir }}"

roles/kubernetes/node/tasks/nginx-proxy.yml

@@ -1,8 +1,13 @@
 ---
+- name: haproxy | Cleanup potentially deployed haproxy
+  file:
+    path: "{{ kube_manifest_dir }}/haproxy.yml"
+    state: absent
+
 - name: nginx-proxy | Write static pod
   template:
     src: manifests/nginx-proxy.manifest.j2
-    dest: "{{kube_manifest_dir}}/nginx-proxy.yml"
+    dest: "{{ kube_manifest_dir }}/nginx-proxy.yml"
 
 - name: nginx-proxy | Make nginx directory
   file: