Create variables for ipvs kernel modules (#10580)

* Create variables for ipvs kernel modules

* Corrected kubernetes role node task missing name

* Added changes as suggested during review by VannTen

roles/kubernetes/node/defaults/main.yml

@@ -240,3 +240,11 @@ azure_cloud: AzurePublicCloud
 #   - TLS_RSA_WITH_AES_256_CBC_SHA
 #   - TLS_RSA_WITH_AES_256_GCM_SHA384
 #   - TLS_RSA_WITH_RC4_128_SHA
+
+kube_proxy_ipvs_modules:
+  - ip_vs
+  - ip_vs_rr
+  - ip_vs_wrr
+  - ip_vs_sh
+  - ip_vs_wlc
+  - ip_vs_lc

roles/kubernetes/node/tasks/main.yml

@@ -112,11 +112,7 @@
   community.general.modprobe:
     name: "{{ item }}"
     state: present
-  with_items:
+  loop: "{{ kube_proxy_ipvs_modules }}"
-    - ip_vs
-    - ip_vs_rr
-    - ip_vs_wrr
-    - ip_vs_sh
   when: kube_proxy_mode == 'ipvs'
   tags:
     - kube-proxy
@@ -132,18 +128,18 @@
   tags:
     - kube-proxy
 
+- name: Add nf_conntrack_ipv4 kube-proxy ipvs module list
+  set_fact:
+    kube_proxy_ipvs_modules: "{{ kube_proxy_ipvs_modules + ['nf_conntrack_ipv4'] }}"
+  when: modprobe_nf_conntrack_ipv4 is success
+  tags:
+    - kube-proxy
+
 - name: Persist ip_vs modules
   copy:
     dest: /etc/modules-load.d/kube_proxy-ipvs.conf
     mode: 0644
-    content: |
+    content: "{{ kube_proxy_ipvs_modules | join('\n') }}"
-      ip_vs
-      ip_vs_rr
-      ip_vs_wrr
-      ip_vs_sh
-      {% if modprobe_nf_conntrack_ipv4 is success -%}
-      nf_conntrack_ipv4
-      {%-   endif -%}
   when: kube_proxy_mode == 'ipvs'
   tags:
     - kube-proxy