feat: By default conduct single node install

!35

templates/ConfigMap-manifest-Calico_Service_Endpoint.yaml.j2

@@ -6,6 +6,6 @@ metadata:
   namespace: tigera-operator
 data:
   KUBERNETES_SERVICE_HOST: "
-    {%- set octet = kubernetes_config.cluster.networking.ServiceSubnet | split('.') -%}
+    {%- set octet = kubernetes_config.cluster.networking.ServiceSubnet | default(nfc_role_kubernetes_service_subnet) | split('.') -%}
     {{- octet[0] }}.{{- octet[1] }}.{{- octet[2] }}.1"
   KUBERNETES_SERVICE_PORT: '443'

templates/IPPool-manifest-Calico_Cluster.yaml.j2

@@ -9,7 +9,7 @@ spec:
     - Workload
     - Tunnel
   blockSize: 26
-  cidr: {{ kubernetes_config.cluster.networking.podSubnet }}
+  cidr: {{ kubernetes_config.cluster.networking.podSubnet | default(nfc_role_kubernetes_pod_subnet) }}
   ipipMode: Never
   natOutgoing: true
   nodeSelector: all()

templates/Installation-manifest-Calico_Cluster.yaml.j2

@@ -11,7 +11,7 @@ spec:
     hostPorts: Enabled
     ipPools:
     - blockSize: 26
-      cidr: {{ kubernetes_config.cluster.networking.podSubnet }}
+      cidr: {{ kubernetes_config.cluster.networking.podSubnet | default(nfc_role_kubernetes_pod_subnet) }}
       disableBGPExport: false
       encapsulation: VXLAN
       natOutgoing: Enabled
@@ -41,7 +41,7 @@ spec:
     type: RollingUpdate
   nonPrivileged: Disabled
   serviceCIDRs:
-    - {{ kubernetes_config.cluster.networking.ServiceSubnet }}
+    - {{ kubernetes_config.cluster.networking.ServiceSubnet | default(nfc_role_kubernetes_service_subnet) }}
   typhaDeployment:
     spec:
       template:

templates/calico.yaml.j2

@@ -4810,7 +4810,7 @@ spec:
             # chosen from this range. Changing this value after installation will have
             # no effect. This should fall within `--cluster-cidr`.
             - name: CALICO_IPV4POOL_CIDR
-              value: "{{ KubernetesPodSubnet }}"
+              value: "{{ nfc_role_kubernetes_pod_subnet }}"
             # Disable file logging so `kubectl logs` works.
             - name: CALICO_DISABLE_FILE_LOGGING
               value: "true"

templates/iptables-kubernetes.rules.j2

@@ -31,7 +31,7 @@
 
 {%- endif -%}
 
-{%- for kubernetes_host in groups[kubernetes_config.cluster.group_name] -%}
+{%- for kubernetes_host in groups[kubernetes_config.cluster.group_name | default('me_is_optional')] | default([]) -%}
 
     {%- set kubernetes_host = hostvars[kubernetes_host].ansible_host -%}
 
@@ -63,7 +63,7 @@
 
     {%- for master_host in groups['kubernetes_master'] -%}
 
-      {%- if master_host in groups[kubernetes_config.cluster.group_name] -%}
+      {%- if master_host in groups[kubernetes_config.cluster.group_name | default('me_is_optional')] | default([]) -%}
 
         {%- set master_host = hostvars[master_host].ansible_host -%}
 

templates/k3s-config.yaml.j2

@@ -6,7 +6,12 @@
 # Dont edit this file directly as it will be overwritten.
 #
 
-{%- if inventory_hostname in groups['kubernetes_master'] -%}
+{%- if 
+  inventory_hostname in groups['kubernetes_master']
+    or
+  kubernetes_config.cluster.prime.name | default(inventory_hostname) == inventory_hostname
+-%}
+
   {%
 
   set kube_apiserver_arg = [
@@ -19,7 +24,7 @@
   -%}
     {%
     set servers_config = {
-        "cluster-cidr": KubernetesPodSubnet,
+        "cluster-cidr": nfc_role_kubernetes_pod_subnet,
         "disable": [
           "traefik"
         ],
@@ -27,23 +32,23 @@
         "etcd-snapshot-retention": kubernetes_etcd_snapshot_retention | int,
         "etcd-snapshot-schedule-cron":  kubernetes_etcd_snapshot_cron_schedule | string,
         "flannel-backend": "none",
-        "service-cidr": KubernetesServiceSubnet
+        "service-cidr": nfc_role_kubernetes_service_subnet
       }
     -%}
 
     {%- if 
-          kubernetes_config.cluster.domain_name is defined
+          kubernetes_config.cluster.domain_name | default(nfc_role_kubernetes_cluster_domain) is defined
             and
-          kubernetes_config.cluster.domain_name | default('') != ''
+          kubernetes_config.cluster.domain_name | default(nfc_role_kubernetes_cluster_domain) != ''
     -%}
 
         {%- set servers_config = servers_config | combine({
-          "cluster-domain": kubernetes_config.cluster.domain_name
+          "cluster-domain": kubernetes_config.cluster.domain_name | default(nfc_role_kubernetes_cluster_domain)
         }) -%}
 
     {%- endif -%}
 
-    {%- if kubernetes_config.cluster.oidc.enabled | default(false) | bool -%}
+    {%- if kubernetes_config.cluster.oidc.enabled | default(nfc_role_kubernetes_oidc_enabled) | default(false) | bool -%}
 
       {%- 
         set kube_apiserver_arg = kube_apiserver_arg + [
@@ -129,7 +134,7 @@
 -%}
 
 
-{%- if groups[kubernetes_config.cluster.group_name] | default([]) | list | length > 0 -%}
+{%- if groups[kubernetes_config.cluster.group_name | default('make_me_optional')] | default([]) | list | length > 0 -%}
   
   {%- if k3s_installed.rc == 0 -%}
 
@@ -215,7 +220,11 @@
 {# EoF All Nodes #}
 
 
-{%- if inventory_hostname in groups['kubernetes_master'] -%}
+{%- if 
+  inventory_hostname in groups['kubernetes_master']
+    or
+  kubernetes_config.cluster.prime.name | default(inventory_hostname) == inventory_hostname
+-%}
 
   {%- set servers_config = servers_config | combine( all_nodes_config ) -%}