---
- name: generate apt pin files for kubeadm and kubectl
  loop:
  - kubeadm
  - kubectl
  copy:
    dest: "/etc/apt/preferences.d/{{ item }}.pref"
    content: |
      Package: {{ item }}
      Pin: version {{ kubernetes_version }}-00
      Pin-Priority: 1001

- name: install kubeadm packages
  apt:
    name:
    - haproxy
    - haproxyctl
    - "kubeadm={{ kubernetes_version }}-00"
    - "kubectl={{ kubernetes_version }}-00"
    state: present
    allow_downgrade: yes

- name: set kubelet node-ip
  when: kubernetes_overlay_node_ip is defined
  lineinfile:
    name: "/etc/default/kubelet"
    regexp: '^KUBELET_EXTRA_ARGS='
    line: 'KUBELET_EXTRA_ARGS=--node-ip={{ kubernetes_overlay_node_ip }}'
    create: yes

- name: add kubeadm config for shells
  loop:
  - zsh
  - bash
  blockinfile:
    path: "/root/.{{ item }}rc"
    create: yes
    marker: "### {mark} ANSIBLE MANAGED BLOCK for kubeadm ###"
    content: |
      source <(kubeadm completion {{ item }})

- name: configure haproxy
  template:
    src: haproxy.cfg.j2
    dest: /etc/haproxy/haproxy.cfg
  register: haproxy_config

- name: (re)start haproxy
  systemd:
    name: haproxy
    state: "{% if haproxy_config is changed %}restarted{% else %}started{% endif %}"
    enabled: yes

## loading the modules temporarly because kubeadm will complain if they are not there
#  but i don't think it is necessary to make this persistent, also ignoring changes here
- name: load module br_netfilter to satisfy kubeadm init/join
  modprobe:
    name: br_netfilter
    state: present
  changed_when: false

- name: enable IPv4 forwarding
  sysctl:
    name: net.ipv4.ip_forward
    value: '1'
    sysctl_set: yes
    state: present
    reload: yes

- name: prepare network plugin
  include_tasks: "net_{{ kubernetes_network_plugin }}.yml"