refactor to use roles

roles/common/tasks/main.yml

@@ -0,0 +1,77 @@
+- name: Install packages that allow apt to be used over HTTPS
+  apt:
+    name: "{{ packages }}"
+    state: present
+    update_cache: yes
+  vars:
+    packages:
+    - aptitude
+    - apt-transport-https
+    - ca-certificates
+    - curl
+    - gnupg-agent
+    - software-properties-common
+
+- name: Add an apt signing key for Docker
+  apt_key:
+    url: https://download.docker.com/linux/ubuntu/gpg
+    state: present
+
+- name: Add apt repository for stable version
+  apt_repository:
+    repo: deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable
+    state: present
+
+- name: Install docker and its dependecies
+  apt: 
+    name: "{{ packages }}"
+    state: present
+    update_cache: yes
+  vars:
+    packages:
+    - docker-ce
+    - docker-ce-cli
+    - containerd.io
+  notify:
+    - docker status
+
+- name: Add user to docker group
+  user:
+    name: "{{ ansible_user_id }}"
+    group: docker
+- name: Remove swapfile from /etc/fstab
+  mount:
+    name: "{{ item }}"
+    fstype: swap
+    state: absent
+  with_items:
+    - swap
+    - none
+
+- name: Disable swap
+  command: swapoff -a
+  when: ansible_swaptotal_mb > 0
+
+- name: Add an apt signing key for Kubernetes
+  apt_key:
+    url: https://packages.cloud.google.com/apt/doc/apt-key.gpg
+    state: present
+
+- name: Adding apt repository for Kubernetes
+  apt_repository:
+    repo: deb https://apt.kubernetes.io/ kubernetes-xenial main
+    state: present
+    filename: kubernetes.list
+
+- name: Install Kubernetes binaries
+  apt: 
+    name: "{{ packages }}"
+    state: present
+    update_cache: yes
+  vars:
+    packages:
+      - kubelet 
+      - kubeadm 
+      - kubectl
+  notify:
+    - restart kubelet