Finished lb and db

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

roles/loadbalancer/handlers/main.yml

@@ -0,0 +1,6 @@
+---
+- name: Restart nginx
+  systemd:
+    name: nginx
+    state: restarted
+  become: true

roles/loadbalancer/tasks/configuration.yml

@@ -0,0 +1,20 @@
+---
+- name: Template the nginx config file with dynamic upstreams
+  template:
+    src: templates/nginx.conf.j2
+    dest: "{{ nginx_config_path }}"
+    owner: root
+    group: root
+    mode: "0644"
+  become: true
+  notify:
+    - Restart nginx
+  vars:
+    k3s_server_ips: "{{ k3s.server.ips }}"
+
+- name: Enable nginx
+  systemd:
+    name: nginx
+    daemon_reload: true
+    enabled: true
+  become: true

roles/loadbalancer/tasks/installation.yml

@@ -0,0 +1,12 @@
+---
+- name: Update apt cache
+  apt:
+    update_cache: yes
+  become: true
+
+- name: Install Nginx
+  apt:
+    name:
+      - nginx-full
+    state: present
+  become: true

roles/loadbalancer/tasks/main.yml

@@ -0,0 +1,3 @@
+---
+- include_tasks: installation.yml
+- include_tasks: configuration.yml

roles/loadbalancer/templates/nginx.conf.j2

@@ -0,0 +1,16 @@
+include /etc/nginx/modules-enabled/*.conf;
+
+events {}
+
+stream {
+  upstream k3s_servers {
+    {% for ip in k3s_server_ips %}
+    server {{ ip }}:6443;
+    {% endfor %}
+  }
+
+  server {
+    listen 6443;
+    proxy_pass k3s_servers;
+  }
+}

roles/loadbalancer/vars/main.yml

@@ -0,0 +1 @@
+nginx_config_path: "/etc/nginx/nginx.conf"