refactor(k3s): enhance cluster setup and enable ArgoCD apps

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

roles/k3s_loadbalancer/tasks/configuration.yml

@@ -9,8 +9,6 @@
   become: true
   notify:
     - Restart nginx
-  vars:
-    k3s_server_ips: "{{ k3s_primary_server_ip }}"
 
 - name: Enable nginx
   ansible.builtin.systemd:

roles/k3s_loadbalancer/tasks/installation.yml

@@ -4,6 +4,14 @@
     update_cache: true
   become: true
 
+- name: Install dependencies for apt to use repositories over HTTPS
+  ansible.builtin.apt:
+    name: "{{ item }}"
+    state: present
+  loop:
+    - qemu-guest-agent
+  become: true
+
 - name: Install Nginx
   ansible.builtin.apt:
     name:

roles/k3s_loadbalancer/tasks/main.yml

@@ -1,6 +1,7 @@
 ---
 - name: Installation
   ansible.builtin.include_tasks: installation.yml
+
 - name: Configure
   ansible.builtin.include_tasks: configuration.yml
 

roles/k3s_loadbalancer/templates/nginx.conf.j2

@@ -3,11 +3,10 @@ include /etc/nginx/modules-enabled/*.conf;
 events {}
 
 stream {
-# TCP Load Balancing for the K3s API
   upstream k3s_servers {
-    {% for ip in k3s_server_ips %}
+{% for ip in k3s_server_ips %}
     server {{ ip }}:{{ k3s.loadbalancer.default_port }};
-    {% endfor %}
+{% endfor %}
   }
 
   server {
@@ -15,10 +14,22 @@ stream {
     proxy_pass k3s_servers;
   }
 
+  upstream etcd_servers {
+{% for ip in k3s_server_ips %}
+    server {{ ip }}:2379;
+{% endfor %}
+  }
+
+  server {
+    listen 2379;
+    proxy_pass etcd_servers;
+  }
+
+
   upstream dns_servers {
-    {% for ip in k3s_server_ips %}
+{% for ip in k3s_server_ips %}
     server {{ ip }}:53;
-    {% endfor %}
+{% endfor %}
   }
 
   server {