kubernetes-ansible/roles/install-kubernetes/tasks/main.yml

---
- name: Update apt
  apt: update_cache=yes
  become: true

- name: Install programs to add debian repositories
  apt: name={{ item }}  state=present force=yes
  with_items:
    - curl
    - apt-transport-https
  become: true

- name: Add kubernetes key
  apt_key:
    url: https://packages.cloud.google.com/apt/doc/apt-key.gpg
    state: present
  become: true

- name: Add kubernetes repo
  apt_repository:
    repo: deb https://apt.kubernetes.io/ kubernetes-xenial main
    state: present
  become: true

- name: Add docker key
  apt_key:
    url: https://download.docker.com/linux/ubuntu/gpg
    state: present
  become: true

- name: Add docker repo
  apt_repository:
    repo: deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ ansible_distribution_release }} stable
    state: present
  become: true

- name: Update apt
  apt: update_cache=yes
  become: true

- name: Install kubelet kubeadm and kubectl
  apt: name={{ item }}  state=present force=yes
  with_items:
    - kubelet
    - kubeadm
    - kubectl
  become: true

- name: Install docker-ce 
  shell: >
    apt-get install -y -qq docker-ce=$(apt-cache madison docker-ce | grep "{{ docker_ce_version_to_install }}" | awk {'print $3'})
  become: true

- name: apt-mark hold kubelet kubeadm and kubectl
  command: apt-mark hold {{ item }}
  with_items:
    - kubelet
    - kubeadm
    - kubectl
  become: true

- name: Set bridge-nf-call-iptables
  sysctl: 
    name: net.bridge.bridge-nf-call-iptables
    value: 1
    state: present
    sysctl_set: yes
    reload: yes
  become: true
  when: kube_network == "flannel" or kube_network == "weavenet"