---
- name: Disable SWAP
  shell: |
    swapoff -a
    sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab

- name: Mask swap.target to prevent swap after reboot
  systemd:
    name: swap.target
    masked: yes

- name: Load kernel modules
  modprobe:
    name: "{{ item }}"
    state: present
  loop: "{{ k8s_kernel_modules }}"

- name: Persist kernel modules across reboots
  copy:
    dest: /etc/modules-load.d/k8s.conf
    content: "{% for mod in k8s_kernel_modules %}{{ mod }}\n{% endfor %}"

- name: Set sysctl parameters
  sysctl:
    name: "{{ item.name }}"
    value: "{{ item.value }}"
    state: present
    sysctl_file: /etc/sysctl.d/k8s.conf
    reload: yes
  loop: "{{ k8s_sysctl_params }}"

- name: Install containerd & utils
  apt:
    name: "{{ k8s_required_packages }}"
    state: present
    update_cache: yes

- name: Check if containerd is already configured
  stat:
    path: "{{ containerd_config_path }}"
  register: containerd_config

- name: Generate default containerd config
  shell: |
    mkdir -p /etc/containerd
    containerd config default > {{ containerd_config_path }}
  when: not containerd_config.stat.exists
  notify: Restart Containerd

- name: Enable systemdCgroup in containerd
  replace:
    path: "{{ containerd_config_path }}"
    regexp: "SystemdCgroup = false"
    replace: "SystemdCgroup = true"
  notify: Restart Containerd

- name: Download K8s GPG key
  get_url:
    url: "{{ k8s_gpg_key_url }}"
    dest: "{{ k8s_gpg_keyring | regex_replace('.gpg$', '.asc') }}"
    mode: "0644"

- name: Dearmor K8s GPG key
  shell: "gpg --dearmor -o {{ k8s_gpg_keyring }} {{ k8s_gpg_keyring | regex_replace('.gpg$', '.asc') }}"
  args:
    creates: "{{ k8s_gpg_keyring }}"

- name: Add K8s repository
  apt_repository:
    repo: "{{ k8s_repo }}"
    state: present
    filename: kubernetes

- name: Install K8s tools
  apt:
    name: "{{ k8s_packages | map('regex_replace', '$', '=' + k8s_package_version) | list }}"
    state: present
    update_cache: yes

- name: Hold K8s packages at current version
  dpkg_selections:
    name: "{{ item }}"
    selection: hold
  loop: "{{ k8s_packages }}"