feat: feature gate added to prevent restart of kubernetes service

!14 nofusscomputing/infrastructure/configuration-management/project-production!13

defaults/main.yml

@@ -33,6 +33,11 @@ kubelet_arg_system_reserved_storage: 8Gi
 nfc_kubernetes:
   enable_firewall: true             # Optional, bool enable firewall rules from role 'nfc_firewall'
 
+nfc_kubernetes_no_restart: false         # Set to true to prevent role from restarting kubernetes on the host(s)
+nfc_kubernetes_no_restart_master: false  # Set to true to prevent role from restarting kubernetes on master host(s)
+nfc_kubernetes_no_restart_prime: false   # Set to true to prevent role from restarting kubernetes on prime host
+nfc_kubernetes_no_restart_slave: false   # Set to true to prevent role from restarting kubernetes on slave host(s)
+
 
 k3s:
   files:

docs/projects/ansible/roles/kubernetes/index.md

@@ -68,6 +68,15 @@ For a more probable than not success this role first installs/configures prime m
 
 If the playbook is setup as per [our recommendation](ansible.md) step 2 onwards is first done on master nodes then worker nodes.
 
+!!! tip
+    If you prefer to manually restart the kubernetes service the following variables can be set to prevent a restart of the kubernetes service
+    ``` yaml
+    nfc_kubernetes_no_restart: false
+    nfc_kubernetes_no_restart_master: false
+    nfc_kubernetes_no_restart_prime: false
+    nfc_kubernetes_no_restart_slave: false
+    ```
+    _See default variables below for explanation of each variable if it's not evident enough._
 
 ## Default Variables
 

handlers/main.yml

@@ -28,3 +28,29 @@
       {%- endif %}
     state: restarted
   listen: kubernetes_restart
+  when: |-
+    {%- if
+      nfc_kubernetes_no_restart
+        or
+      (
+        inventory_hostname in kubernetes_master
+          and
+        nfc_kubernetes_no_restart_master
+      )
+        or
+      (
+        inventory_hostname == kubernetes_config.config.prime.name
+          and
+        nfc_kubernetes_no_restart_prime
+      )
+        or
+      (
+        inventory_hostname in kubernetes_worker
+          and
+        nfc_kubernetes_no_restart_slave
+      )
+    -%}
+      false
+    {%- else -%}
+      true
+    {%- endif %}