refactor(k3s): centralize k3s primary server IP and integrate Netcup DNS

Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@tudattr.dev>

playbooks/k3s-agents.yml

@@ -1,8 +1,6 @@
 - name: Set up Agents
   hosts: k3s
   gather_facts: true
-  vars:
-    k3s_primary_server_ip: "{{ groups['k3s_server'] | map('extract', hostvars, 'ansible_host') | list | first }}"
   pre_tasks:
     - name: Get K3s token from the first server
       when: host.ip == k3s_primary_server_ip and inventory_hostname in groups["k3s_server"]

playbooks/k3s-loadbalancer.yml

@@ -11,7 +11,7 @@
       tags:
         - k3s_loadbalancer
       when: inventory_hostname in groups["k3s_loadbalancer"]
-    # - role: node_exporter
-    #   tags:
-    #     - node_exporter
-    #   when: inventory_hostname in groups["k3s_loadbalancer"]
+    - role: node_exporter
+      tags:
+        - node_exporter
+      when: inventory_hostname in groups["k3s_loadbalancer"]

playbooks/k3s-servers.yml

@@ -6,10 +6,12 @@
     - role: common
       tags:
         - common
+      when: inventory_hostname in groups["k3s_server"]
     - role: k3s_server
       tags:
         - k3s_server
       when: inventory_hostname in groups["k3s_server"]
-    - role: node_exporter
-      tags:
-        - node_exporter
+    # - role: node_exporter
+    #   tags:
+    #     - node_exporter
+    #   when: inventory_hostname in groups["k3s_server"]

playbooks/k3s-storage.yml

@@ -1,8 +1,6 @@
 - name: Set up storage
   hosts: k3s_nodes
   gather_facts: true
-  vars:
-    k3s_primary_server_ip: "{{ groups['k3s_server'] | map('extract', hostvars, 'ansible_host') | list | first }}"
   pre_tasks:
     - name: Get K3s token from the first server
       when: host.ip == k3s_primary_server_ip and inventory_hostname in groups["k3s_server"]