ansible_playbook.yaml

---
- name: Docker Installation
  become: true
  hosts: slave
  remote_user: ubuntu 
  tasks:
  - name: Install packages
    ansible.builtin.apt:
      update_cache: true
      name:
        - ca-certificates 
        - curl 
        - gnupg 
        - lsb-release 
        - apt-transport-https 
        - git 
        - wget
        - software-properties-common
    become: true
    become_method: sudo

  - name: Create keyrings directory 
    ansible.builtin.file:
      path: /etc/apt/keyrings
      state: directory
      mode: '0755'
    become: true
    become_method: sudo

  - name: Check Docker on System 
    ansible.builtin.command:
      cmd: docker --version
    register: docker_check
    ignore_errors: true
    
  - name: Debug 
    ansible.builtin.debug:
      msg: "{{ docker_check }}"
  
  - name: Get docker gpg key 
    ansible.builtin.apt_key:
      url: https://download.docker.com/linux/ubuntu/gpg
      keyring: /etc/apt/keyrings/docker.gpg
      state: present
    become: true
    become_method: sudo
    when: docker_check is failed
    
  - name: Get Architecture
    ansible.builtin.shell: dpkg --print-architecture
    register: system_arch

  - name: Add docker repo 
    ansible.builtin.apt_repository:
      repo: > 
        deb [arch={{system_arch.stdout}} signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu {{ ansible_facts['lsb']['codename'] }} stable
      filename: docker
      state: present
    become: true
    become_method: sudo
    when: docker_check is failed

  - name: Install Docker Engine
    ansible.builtin.apt:
      update_cache: true
      name:
        - docker-ce
    become: true
    become_method: sudo
    when: docker_check is failed

  - name: Restart docker.service
    systemd: 
      name: docker
      daemon_reload: yes
      state: started
    become: true 
    become_method: sudo 
    when: docker_check is failed

  - name: Update apt cache
    apt:
      update_cache: yes
    become: true 
    become_method: sudo

  - name: Install containerd.io
    apt:
      name: containerd.io
      state: present
    become: true 
    become_method: sudo

  - name: Configure containerd to start using systemd as cgroup
    ansible.builtin.shell:
      cmd: "{{ item }}"
    with_items:
      - "containerd config default | sudo tee /etc/containerd/config.toml >/dev/null 2>&1"
      - "sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/g' /etc/containerd/config.toml"

  - name: Restart containerd service
    ansible.builtin.systemd:
      name: containerd
      state: restarted
    become: true 
    become_method: sudo
    
  - name: Enable containerd service
    ansible.builtin.systemd:
      name: containerd
      enabled: yes
    become: true 
    become_method: sudo