Install Docker using Ansible

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Aug 28, 2023

Setup

First, you need to install Ansible. Just follow this link to install Ansible on your operating system installation guide.

After installation, create new directory called ansible-docker.

$ mkdir ansible-docker && cd ansible-docker

Create a new file called ansible.cfg as the Ansible configuration setting and then define the inventory file.

[defaults]
inventory = hosts
host_key_checking = True
deprecation_warnings = False
collections = ansible.posix, community.general

Then create a new file called hosts, where the name is defined on ansible.cfg.

[example-server]
0.0.0.0 ansible_user=root

NB: Don’t forget to change the IP Address and host name.

After setup the Ansible configuration setting & inventory file, let’s create a YAML file called playbook.yml

---
- name: Setup Docker on Ubuntu Server 22.04
  hosts: all
  become: true
  remote_user: root
  roles:
    - config
    - docker

Then create roles directory:

Config, On this directory I will create a directory called tasks. After that, I should create yaml file called main.yml to run update, upgrade & install many dependencies.

---
- name: Update&Upgrade
  ansible.builtin.apt:
    name: aptitude
    state: present
    update_cache: true

- name: Install dependencies
  ansible.builtin.apt:
    name:
      - net-tools
      - apt-transport-https
      - ca-certificates
      - curl
      - software-properties-common
      - python3-pip
      - virtualenv
      - python3-setuptools
      - gnupg-agent
      - autoconf
      - dpkg-dev
      - file
      - g++
      - gcc
      - libc-dev
      - make
      - pkg-config
      - re2c
      - wget
    state: present
    update_cache: true

Docker, On this directory create 2 directories called tasks & templates.

On tasks directory create new file called main.yml. This file contains Docker installation, Docker Compose installation & private registry setup.

---
- name: Add Docker GPG apt Key
  ansible.builtin.apt_key:
    url: https://download.docker.com/linux/ubuntu/gpg
    state: present

- name: Add repository into sources list
  ansible.builtin.apt_repository:
    repo: deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ ansible_lsb.codename }} stable
    state: present
    filename: docker

- name: Install Docker 23.0.1-1
  ansible.builtin.apt:
    name:
      - docker-ce=5:23.0.1-1~ubuntu.22.04~jammy
      - docker-ce-cli=5:23.0.1-1~ubuntu.22.04~jammy
      - containerd.io
    state: present
    update_cache: true

- name: Setup docker user
  ansible.builtin.user:
    name: docker
    groups: "docker"
    append: true
    sudo_user: yes

- name: Install Docker module for Python
  ansible.builtin.pip:
    name: docker

- name: Install Docker-Compose&Set Permission
  ansible.builtin.get_url:
    url: https://github.com/docker/compose/releases/download/1.29.2/docker-compose-Linux-x86_64
    dest: /usr/local/bin/docker-compose
    mode: '755'

- name: Create Docker-Compose symlink
  ansible.builtin.command:
    cmd: ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
    creates: /usr/bin/docker-compose

- name: Add private registry
  ansible.builtin.template:
    src: daemon.j2
    dest: /etc/docker/daemon.json
    mode: preserve

- name: Restart Docker
  ansible.builtin.service:
    name: docker
    state: restarted
    enabled: true

In the template, create a template file using a jinja file named daemon.j2. This file contains configuration for private registry settings (optional).

{
    "insecure-registries" : ["http://0.0.0.0:5000"]
}

NB: Field the IP using your remote server private IP

After all setup, Your project directory should look like this:

$ tree
.
├── ansible.cfg
├── config
│   └── tasks
│       └── main.yml
├── docker
│   ├── tasks
│   │   └── main.yml
│   └── templates
│       └── daemon.j2
├── hosts
└── playbook.yml

Test & Run

Okay, now test Your playbook.yml file using this command.

$ ansible-playbook --syntax-check playbook.yml

If You don’t have any errors, run the playbook using this command.

$ ansible-playbook -i hosts playbook.yml

Wait until finish.

 ____________________________________________
< PLAY [Setup Docker on Ubuntu Server 22.04] >
 --------------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

 ________________________
< TASK [Gathering Facts] >
 ------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Conclusion

In this post, I just show you how to install Docker in a specific version using Ansible Playbook when you have one or more servers.

Thank You for reading this post, If You have suggestions or questions please leave them below. Thanks

NB: In this case, I just set the user as root. I installed the Docker on Ubuntu Server 22.04. For full code follow this link ansible-docker.

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