- hosts: all
  become: yes

  tasks:
    - name: update package cache
      apt:
        update_cache: yes

    - name: install required packages
      apt:
        name:
          - apt-transport-https
          - ca-certificates
          - curl
          - gnupg
          - containerd
        state: present

    - name: create br_netfilter
      command: modprobe br_netfilter

    - name: create a containerd directory
      file:
        path: /etc/containerd
        state: directory

    - name: generate containerd default configuration
      command: containerd config default
      register: containerd_output  # Capture the output of the command

    - name: save configuration to /home/kubew2/config.toml
      copy:
        content: "{{ containerd_output.stdout }}"
        dest: $HOME/config.toml

    - name: move it (can't directly create on /etc/containerd for some reason)
      command: mv $HOME/config.toml /etc/containerd/config.toml

    - name: update the containerd config.toml file
      command: sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml
  
    - name: turn off swap
      command: swapoff -a

    - name: uncomment net.ipv4.ip_forward in sysctl.conf
      lineinfile:
        path: /etc/sysctl.conf
        regexp: '^#?net.ipv4.ip_forward='
        line: 'net.ipv4.ip_forward=1'
        state: present

    - name: edit /proc/sys/net/ipv4/ip_forward
      command: echo "1" | sudo tee /proc/sys/net/ipv4/ip_forward

    - name: reload sysctl config
      command: sysctl -p

    - name: check if GPG key file exists
      stat:
        path: /etc/apt/keyrings/kubernetes-apt-keyring.gpg
      register: gpg_key_file


    - name: download Kubernetes GPG key
      shell: curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
      when: not gpg_key_file.stat.exists


    - name: add Kubernetes repository
      shell: echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list

    - name: update package cache after adding repository
      apt:
        update_cache: yes

    - name: install Kubernetes components
      apt:
        name:
          - kubelet
          - kubeadm
          - kubectl
        state: present

    - name: hold Kubernetes packages to prevent automatic updates
      command: sudo apt-mark hold kubelet kubeadm kubectl