# roles/k8s/k8scommon/tasks/main.yml
---
# === 1. Обновление пакетов и базовые утилиты ===
- name: Install base packages
  ansible.builtin.apt:
    update_cache: yes
    name:
      - apt-transport-https
      - ca-certificates
      - curl
      - gnupg
      - lsb-release
    state: present

# === 2. Отключить swap ===
- name: Disable swap immediately
  ansible.builtin.command: swapoff -a
  changed_when: false

- name: Backup fstab
  ansible.builtin.copy:
    src: /etc/fstab
    dest: /etc/fstab.bak
    remote_src: yes
    force: no

- name: Comment out swap entries in fstab
  ansible.builtin.replace:
    path: /etc/fstab
    regexp: '^\s*([^#].*\s+swap\s+.*)$'
    replace: '# \1'

# === 3. Модули ядра ===
- name: Write kernel modules config for Kubernetes
  ansible.builtin.copy:
    dest: /etc/modules-load.d/k8s.conf
    content: |
      overlay
      br_netfilter

- name: Load overlay module
  ansible.builtin.command: modprobe overlay
  changed_when: false

- name: Load br_netfilter module
  ansible.builtin.command: modprobe br_netfilter
  changed_when: false

# === 4. sysctl для Kubernetes / containerd ===
- name: Configure Kubernetes sysctl params
  ansible.builtin.copy:
    dest: /etc/sysctl.d/99-kubernetes-cri.conf
    content: |
      net.bridge.bridge-nf-call-iptables = 1
      net.bridge.bridge-nf-call-ip6tables = 1
      net.ipv4.ip_forward = 1

- name: Apply sysctl settings
  ansible.builtin.command: sysctl --system
  changed_when: false

# === 5. Установить containerd ===
- name: Install containerd
  ansible.builtin.apt:
    update_cache: yes
    name: containerd
    state: present

- name: Ensure containerd config directory exists
  ansible.builtin.file:
    path: /etc/containerd
    state: directory
    mode: '0755'

# ВАЖНО: всегда пересоздаём config.toml, как в manual script
- name: Generate default containerd config (overwrite)
  ansible.builtin.shell: |
    set -o errexit
    containerd config default > /etc/containerd/config.toml
  args:
    executable: /bin/bash

- name: Enable SystemdCgroup in containerd config
  ansible.builtin.replace:
    path: /etc/containerd/config.toml
    regexp: 'SystemdCgroup = false'
    replace: 'SystemdCgroup = true'

- name: Set correct CNI bin_dir in containerd config
  ansible.builtin.replace:
    path: /etc/containerd/config.toml
    regexp: 'bin_dir = .*'
    replace: 'bin_dir = "/opt/cni/bin"'

- name: Set correct CNI conf_dir in containerd config
  ansible.builtin.replace:
    path: /etc/containerd/config.toml
    regexp: 'conf_dir = .*'
    replace: 'conf_dir = "/etc/cni/net.d"'

- name: Enable and restart containerd
  ansible.builtin.systemd:
    name: containerd
    enabled: true
    state: restarted

# === 6. Подготовить директории для CNI ===
- name: Ensure CNI directories exist
  ansible.builtin.file:
    path: "{{ item }}"
    state: directory
    mode: '0755'
  loop:
    - /opt/cni/bin
    - /etc/cni/net.d

# /usr/lib/cni → /opt/cni/bin, только если /usr/lib/cni не существует
- name: Check if /usr/lib/cni exists
  ansible.builtin.stat:
    path: /usr/lib/cni
  register: cni_usr_lib

- name: Create symlink /usr/lib/cni -> /opt/cni/bin (if not exists)
  ansible.builtin.file:
    src: /opt/cni/bin
    dest: /usr/lib/cni
    state: link
  when: not cni_usr_lib.stat.exists

# === 7. Репозиторий Kubernetes v1.34 ===
- name: Ensure apt keyrings directory exists
  ansible.builtin.file:
    path: /etc/apt/keyrings
    state: directory
    mode: '0755'

- name: Download Kubernetes repo key
  ansible.builtin.shell: |
    set -o errexit
    curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.34/deb/Release.key \
      | gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
  args:
    executable: /bin/bash
    creates: /etc/apt/keyrings/kubernetes-apt-keyring.gpg

- name: Add Kubernetes apt repository
  ansible.builtin.copy:
    dest: /etc/apt/sources.list.d/kubernetes.list
    content: |
      deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.34/deb/ /

- name: Update apt cache after adding Kubernetes repo
  ansible.builtin.apt:
    update_cache: yes

# === 8. Установить kubelet, kubeadm, kubectl и зафиксировать версии ===
- name: Install kubelet, kubeadm, kubectl
  ansible.builtin.apt:
    name:
      - kubelet
      - kubeadm
      - kubectl
    state: present
    update_cache: yes

- name: Hold Kubernetes packages
  ansible.builtin.command: apt-mark hold kubelet kubeadm kubectl
  register: hold_result
  changed_when: >-
    'hold' in hold_result.stdout
    or 'marked' in hold_result.stdout
    or hold_result.rc == 0