master_ip: 10.0.1.170
remote_dest: /home/ubuntu/k3s_token
local_dest: /Users/mahmud/Desktop/skill-development/ha-kubernetes-with-k3s/ansible/temp/

target_directory: /home/ubuntu/.kube
target_file: config

local_dockerfile: /Users/mahmud/Desktop/skill-development/ha-kubernetes-with-k3s/ansible/Dockerfile

---
- name: Deploy K3s Cluster
  hosts: k3s_nodes
  become: true
  vars_files:
    - project-vars
  tasks:
    - name: Install dependencies
      apt:
        name: "{{ item }}"
        state: present
      with_items:
        - curl
        - sudo
        - iptables

    - name: Download and install K3s
      shell: curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="--tls-san {{master_ip}}" sh -

    - name: Set permissions for k3s.yaml
      file:
        path: /etc/rancher/k3s/k3s.yaml
        mode: '0644'
      become: true

    - name: Set ownership for k3s.yaml
      become: true
      command: chown {{ lookup('pipe', 'id -u') }}:{{ lookup('pipe', 'id -g') }} /etc/rancher/k3s/k3s.yaml

    - name: Retrieve K3s token
      shell: sudo cat /var/lib/rancher/k3s/server/node-token
      register: k3s_token

    - name: Store K3s token in a file
      copy:
        content: "{{ k3s_token.stdout }}"
        dest: "{{remote_dest}}" 

    - name: Fetch the file from the remote host
      ansible.builtin.fetch:
        src: "{{remote_dest}}"  
        dest: "{{local_dest}}"       
        flat: yes

    - name: Fetch the kubeconfig file from the remote host
      ansible.builtin.fetch:
        src: "/etc/rancher/k3s/k3s.yaml"  
        dest: "{{local_dest}}"       
        flat: yes

---
- name: Install Docker
  hosts: nginx_lb
  become: yes
  vars_files:
    - project-vars
  tasks:
    - name: Update package index
      apt: update_cache=yes

    - name: Install packages to allow apt to use a repository over HTTPS
      apt: name={{ item }} state=present
      with_items:
      - apt-transport-https
      - ca-certificates
      - curl
      - software-properties-common

    - name: Add Docker's official GPG key
      apt_key: url=https://download.docker.com/linux/ubuntu/gpg state=present

    - name: Set up the stable repository
      apt_repository: repo='deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ ansible_distribution_release }} stable' state=present

    - name: Install Docker CE
      apt: name=docker-ce state=present

    - name: Start Docker daemon
      systemd:
         name: docker
         state: started 

    - name: Add user to the docker group
      user: 
        name: ubuntu
        groups: docker 
        append: yes 

    - name: Reconnect to server session
      meta: reset_connection

- name: Create Nginx Image from Dockerfile
  hosts: nginx_lb
  become: yes
  vars_files:
    - project-vars
  tasks:
    - name: Check Dockerfile existence
      stat:
        path: /home/ubuntu/Dockerfile
      register: stat_result

    - name: Copy Dockerfile to server
      copy:
        src: "{{local_dockerfile}}"
        dest: "/home/ubuntu"
      when: not stat_result.stat.exists

    - name: Build Docker Nginx Image
      docker_image:
        name: nginx-loadbalancer
        build:
          path: /home/ubuntu/
          pull: "yes"
        source: build
        state: present

- name: Create Nginx Container from Image
  hosts: nginx_lb
  become: yes
  vars: 
    container_name: nginx-lb
  tasks:
    - name: Create Nginx Container
      docker_container:
        name: "{{ container_name }}"
        image: nginx-loadbalancer 
        ports:
          - "80:80"
        state: started