k8s.yaml

---
- hosts: all
  become: yes
  tasks:
    - name: Install necessary packages
      apt:
        name: "{{ packages }}"
        state: present
      vars:
        packages:
        - ca-certificates
        - software-properties-common
        - curl

    - name: Add k8s apt key
      apt_key:
        url: https://packages.cloud.google.com/apt/doc/apt-key.gpg
        state: present

    - name: Add k8s APT repository
      apt_repository:
        repo: deb http://apt.kubernetes.io/ kubernetes-xenial main
        state: present
        filename: kubernetes

    - name: Install k8s packages
      apt:
        name: "{{ packages }}"
        state: present
      vars:
        packages:
        - kubeadm
        - kubelet

- hosts: masters
  become: yes
  tasks:
    - name: Install kubectl
      apt:
        name: kubectl
        state: present
        force: yes