Added k3s agents

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

k3s-agents.yml

@@ -0,0 +1,31 @@
+- name: Set up Agents
+  hosts: k3s_nodes
+  gather_facts: yes
+  vars_files:
+    - secrets.yml
+  pre_tasks:
+    - name: Get K3s token from the first server
+      when: host.ip == k3s.server.ips[0] and inventory_hostname in groups["k3s_server"]
+      slurp:
+        src: /var/lib/rancher/k3s/server/node-token
+      register: k3s_token
+      become: true
+
+    - name: Set fact on k3s.server.ips[0]
+      when: host.ip == k3s.server.ips[0] and inventory_hostname in groups["k3s_server"]
+      set_fact: k3s_token="{{ k3s_token['content'] | b64decode | trim }}"
+
+  roles:
+    - role: common
+      when: inventory_hostname in groups["k3s_agent"]
+      tags:
+        - common
+    - role: k3s_agent
+      when: inventory_hostname in groups["k3s_agent"]
+      k3s_token: "{{ hostvars[(hostvars | dict2items | map(attribute='value') | map('dict2items') | map('selectattr', 'key', 'match', 'host') | map('selectattr', 'value.ip', 'match', k3s.server.ips[0] ) | select() | first | items2dict).host.hostname].k3s_token }}"
+      tags:
+        - k3s_agent
+    - role: node_exporter
+      when: inventory_hostname in groups["k3s_agent"]
+      tags:
+        - node_exporter