---
- name: Install k3s on master node
  hosts: master
  become: yes
  vars:
    k3s_version: "v1.35.0+k3s1"
    k3s_download_url: "http://download.9981.tech/k3s-v1.35.0%2Bk3s1"
    master_ip: "47.113.186.215"
    k3s_token: "my-secret-token"

  tasks:
    - name: Stop and cleanup any existing k3s installation
      shell: |
        systemctl stop k3s 2>/dev/null || true
        pkill -f k3s 2>/dev/null || true
        rm -f /etc/systemd/system/k3s.service
        rm -rf /var/lib/rancher/k3s
        rm -rf /etc/rancher/k3s
        rm -rf /root/.kube
      register: cleanup_result
      ignore_errors: yes

    - name: Print cleanup status
      debug:
        msg: "Cleanup completed on master node"

    - name: Check if k3s binary exists
      stat:
        path: /usr/local/bin/k3s
      register: k3s_binary

    - name: Download k3s binary
      get_url:
        url: "{{ k3s_download_url }}"
        dest: /usr/local/bin/k3s
        mode: '0755'
      when: not k3s_binary.stat.exists

    - name: Print k3s binary status
      debug:
        msg: "k3s binary already exists, skipping download"
      when: k3s_binary.stat.exists

    - name: Create k3s systemd service file
      template:
        src: k3s.service.j2
        dest: /etc/systemd/system/k3s.service
        mode: '0644'

    - name: Reload systemd daemon
      systemd:
        daemon_reload: yes

    - name: Enable and start k3s service
      systemd:
        name: k3s
        enabled: yes
        state: started

    - name: Wait for node-token file to be created
      wait_for:
        path: /var/lib/rancher/k3s/server/node-token
        timeout: 300
      register: token_wait

    - name: Display success message
      debug:
        msg: "k3s master node installed and running successfully"