# Copyright (c) Authors of Clover
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0

- name: Checking dependencies for Docker
  shell: docker --version
  register: doc_ver
  ignore_errors: true
  failed_when: false

- name: Removing unsupported version of Docker (if any)
  apt:
    name: "{{ item }}"
    state: absent
  with_items:
    - 'docker'
    - 'docker-engine'
    - 'docker-ce'
    - 'docker.io'
  when: doc_ver.stdout.find('18.04.0-ce') == -1

- name: Adding GPG key for Docker
  apt_key:
    url: https://download.docker.com/linux/debian/gpg
    state: present
  when: doc_ver.stdout.find('18.04.0-ce') == -1

- name: Updating sources.list.d directory
  shell: echo "deb [arch=armhf] https://download.docker.com/linux/$(. /etc/os-release; echo "$ID") $(lsb_release -cs) edge" | \ tee /etc/apt/sources.list.d/docker.list
  when: doc_ver.stdout.find('18.04.0-ce') == -1

- name: Installing Docker 18.04.0
  apt:
    name: docker-ce=18.04.0~ce~3-0~raspbian
    update_cache: yes
  when: doc_ver.stdout.find('18.04.0-ce') == -1

- name: Adding user 'pi' to the 'docker' group
  shell: usermod pi -aG docker
  when: doc_ver.stdout.find('18.04.0-ce') == -1

- name: Removing docker from apt sources to prevent upgrade
  file:
    path: /etc/apt/sources.list.d/docker.list
    state: absent

- name: Turning off swap
  shell: dphys-swapfile swapoff && dphys-swapfile uninstall && update-rc.d dphys-swapfile remove

- name: Checking cgroup dependencies
  shell: cat /boot/cmdline.txt
  register: boot

- name: Enabling cpuset cgroup
  shell: sed -i 's/$/ cgroup_enable=cpuset/' /boot/cmdline.txt
  args:
    warn: false
  when: boot.stdout.find('cgroup_enable=cpuset') == -1

- name: Enabling memory cgroup (1/2)
  shell: sed -i 's/$/ cgroup_memory=1/' /boot/cmdline.txt
  args:
    warn: false
  when: boot.stdout.find('cgroup_memory=1') == -1

- name: Enabling memory cgroup (2/2)
  shell: sed -i 's/$/ cgroup_enable=memory/' /boot/cmdline.txt
  args:
    warn: false
  when: boot.stdout.find('cgroup_enable=memory') == -1

- name: Rebooting
  shell: sleep 2 && reboot
  async: 1
  poll: 0
  ignore_errors: true
  when: boot.stdout.find('cgroup_enable=cpuset') == -1 or boot.stdout.find('cgroup_memory=1') == -1 or boot.stdout.find('cgroup_enable=memory') == -1

- name: Waiting for host(s) to come online
  wait_for_connection:
    delay: 30
  when: boot.stdout.find('cgroup_enable=cpuset') == -1 or boot.stdout.find('cgroup_memory=1') == -1 or boot.stdout.find('cgroup_enable=memory') == -1

- name: Checking dependencies for Kubernetes
  shell: kubeadm version
  register: kube_ver
  ignore_errors: true
  failed_when: false

- name: Removing unsupported version of Kubernetes (if any)
  apt:
    name: "{{ item }}"
    state: absent
    autoremove: yes
  with_items:
    - 'kubeadm'
    - 'kubectl'
    - 'kubelet'
  when: kube_ver.stdout.find('v1.10.2') == -1

- name: Adding GPG key for kubernetes
  apt_key:
    url: https://packages.cloud.google.com/apt/doc/apt-key.gpg
    state: present
  when: kube_ver.stdout.find('v1.10.2') == -1

- name: Updating sources.list.d directory
  shell: echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
  when: kube_ver.stdout.find('v1.10.2') == -1

- name: Installing kubeadm, kubectl and kubelet version 1.10.2-00
  apt:
    name: "{{ item }}"
    update_cache: true
  with_items:
    - 'kubeadm=1.10.2-00'
    - 'kubectl=1.10.2-00'
    - 'kubelet=1.10.2-00'
  when: kube_ver.stdout.find('v1.10.2') == -1

- name: Removing kubernetes from apt sources to prevent upgrade
  file:
    path: /etc/apt/sources.list.d/kubernetes.list
    state: absent