---
- name: Retrieve k3s token and master IP from master node
  ansible.builtin.set_fact:
    k3s_token: "{{ hostvars[groups['tag_k3s_master'][0]].k3s_token }}"
    k3s_master_ip: "{{ hostvars[groups['tag_k3s_master'][0]].ansible_default_ipv4.address }}"
  when: hostvars[groups['tag_k3s_master'][0]].k3s_token is defined

- name: Ensure /opt/k3s directory exists
  ansible.builtin.file:
    path: /opt/k3s
    state: directory
    mode: '0755'

- name: Check if k3s installer script already exists
  ansible.builtin.stat:
    path: /opt/k3s/install_k3s.sh
  register: k3s_installer_script

- name: Download k3s installation script if not already present
  ansible.builtin.get_url:
    url: https://get.k3s.io
    dest: /opt/k3s/install_k3s.sh
    mode: '0755'
  when: not k3s_installer_script.stat.exists

- name: Check if k3s agent is already installed
  ansible.builtin.stat:
    path: /var/lib/rancher/k3s/agent
  register: k3s_agent_installed

- name: Install k3s agent if not already installed
  ansible.builtin.command: >
    /opt/k3s/install_k3s.sh agent
    --server https://{{ k3s_master_ip }}:6443
    --token {{ k3s_token }}
  become: true
  when: not k3s_agent_installed.stat.exists
...