feat(nfc_kubernetes): new variable 'nfc_role_kubernetes_node_prime' to denote the hostname of the prime node

!65 fixes #28

roles/nfc_kubernetes/defaults/main.yml

@@ -46,6 +46,8 @@ nfc_role_kubernetes_install_kubevirt: false
 
 nfc_role_kubernetes_kubevirt_operator_replicas: 1
 
+# nfc_role_kubernetes_node_prime: ''    # Mandatory*, string. the inventory_hostname of the prime node. ONLY required for multi-node deployments
+
 nfc_role_kubernetes_oidc_enabled: false
 
 nfc_role_kubernetes_resolv_conf_file: /etc/resolv.conf
@@ -136,7 +138,7 @@ k3s:
         #       usernames: []
         #       runtimeClasses: []
         #       namespaces: [kube-system]
-      when: "{{ kubernetes_config.cluster.prime.name | default(inventory_hostname) == inventory_hostname }}"
+      when: "{{ nfc_role_kubernetes_prime | bool }}"
 
 
 #############################################################################################

roles/nfc_kubernetes/tasks/k3s/configure.yaml

@@ -34,7 +34,7 @@
 
       - src: kubernetes-manifest-rbac.yaml.j2
         dest: /var/lib/rancher/k3s/server/manifests/rbac-authorization-common.yaml
-        when: "{{ kubernetes_config.cluster.prime.name | default(inventory_hostname) == inventory_hostname }}"
+        when: "{{ nfc_role_kubernetes_prime | bool }}"
 
       - src: iptables-kubernetes.rules.j2
         dest: "/etc/iptables-reloader/rules.d/iptables-kubernetes.rules"
@@ -71,7 +71,7 @@
     owner: root
     group: root
     mode: '700'
-  delegate_to: "{{ kubernetes_config.cluster.prime.name }}"
+  delegate_to: "{{ nfc_role_kubernetes_node_prime }}"
   when:
     kubernetes_config.hosts[inventory_hostname].labels | default([]) | list | length > 0
       or

roles/nfc_kubernetes/tasks/k3s/install.yaml

@@ -620,7 +620,7 @@
         exit 127;
       fi
     executable: /bin/bash
-  delegate_to: "{{ kubernetes_config.cluster.prime.name | default(inventory_hostname) }}"
+  delegate_to: "{{ nfc_role_kubernetes_node_prime }}"
   run_once: true
   register: kubernetes_ready_check
   retries: 30
@@ -723,7 +723,7 @@
 - name: Fetch Join Token
   ansible.builtin.slurp:
     src: /var/lib/rancher/k3s/server/token
-  delegate_to: "{{ kubernetes_config.cluster.prime.name | default(inventory_hostname) }}"
+  delegate_to: "{{ nfc_role_kubernetes_node_prime }}"
   run_once: true
   register: k3s_join_token
   no_log: true # Value is sensitive
@@ -734,7 +734,7 @@
 - name: Create Token fact
   ansible.builtin.set_fact:
     k3s_join_token: "{{ k3s_join_token.content | b64decode | replace('\n', '') }}"
-  delegate_to: "{{ kubernetes_config.cluster.prime.name | default(inventory_hostname) }}"
+  delegate_to: "{{ nfc_role_kubernetes_node_prime }}"
   run_once: true
   no_log: true # Value is sensitive
   when: >
@@ -769,7 +769,7 @@
       INSTALL_K3S_SKIP_DOWNLOAD=true \
       INSTALL_K3S_VERSION="v{{ node_k3s.desired_version }}" \
       K3S_TOKEN="{{ k3s_join_token }}" \
-      K3S_URL="https://{{ hostvars[kubernetes_config.cluster.prime.name | default(inventory_hostname)].ansible_host }}:6443" \
+      K3S_URL="https://{{ hostvars[nfc_role_kubernetes_node_prime].ansible_host }}:6443" \
       /tmp/install.sh -
     executable: /bin/bash
   changed_when: false

roles/nfc_kubernetes/tasks/main.yaml

@@ -5,6 +5,7 @@
     cacheable: false
     nfc_role_kubernetes_prime: true
     nfc_role_kubernetes_master: true
+    nfc_role_kubernetes_node_prime: "{{ inventory_hostname }}"
   when: >
     not nfc_role_kubernetes_worker | bool
       and