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Ansible Role: docker

Role to install (by default) docker package or uninstall (if passed as var) on Ubuntu, Debian and CentOS systems.

Requirements

None.

Role Variables

Available variables are listed below (located in defaults/main.yml):

Variables List:

docker_architecture_map:
  amd64: amd64
  x86_64: amd64
  armv6l: armhfv6
  armv7l: armhfv6
  aarch64: arm64
  32-bit: "386"
  64-bit: amd64
docker_apps:
  - docker-ce
  - docker-ce-cli
  - containerd.io
docker_apps_desired_state: present
docker_service_name: docker
docker_service_desired_state: restarted
docker_service_desired_boot_enabled: yes
docker_group: docker
docker_group_desired_state: present
docker_user: docker
docker_user_home: "/home/{{ docker_user }}"
docker_user_shell: /bin/bash
docker_user_desired_state: present
docker_repo_gpg_key: https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg
docker_nonroot_users:
  - darkwizard242
  - ubuntu
docker_add_nonroot_users: false
docker_centos_pre_reqs:
  - device-mapper-persistent-data
  - lvm2
docker_centos_pre_reqs_desired_state: present
docker_repo_centos: https://download.docker.com/linux/centos/7/$basearch/stable
docker_repo_centos_gpg_key: https://download.docker.com/linux/centos/gpg
docker_repo_centos_name: docker-ce-stable
docker_repo_centos_description: Docker CE Stable - $basearch
docker_repo_centos_gpgcheck: yes
docker_repo_centos_enabled: yes
docker_repo_centos_filename: docker-ce
docker_repo_centos_desired_state: present
docker_debian_pre_reqs:
  - apt-transport-https
  - ca-certificates
  - curl
  - gnupg
  - lsb-release
docker_debian_pre_reqs_desired_state: present
docker_repo_debian: "deb [arch={{ ansible_architecture }}] https://download.docker.com/linux/debian {{ ansible_lsb['codename'] }} stable"
docker_repo_debian_filename: docker-ce
docker_repo_debian_desired_state: present

Variables table:

Variable Description
docker_architecture_map Variable for system architecture types.
docker_apps Name of docker application packages require to be installed i.e. docker-ce, docker-ce-cli, containerd.io
docker_apps_desired_state State of the docker_apps packages (i.e. docker-ce, docker-ce-cli, containerd.io packages). Whether to install, verify if available or to uninstall (i.e. ansible apt module values: present, latest, or absent)
docker_service_name Default service name for Docker.
docker_service_desired_state Desired state for Docker service.
docker_service_desired_boot_enabled Desired enabled/disabled state for Docker service.
docker_service_desired_boot_enabled Desired enabled/disabled state for Docker service.
docker_group Name of the group that the docker owner will belong to. Any user that requires using docker app requires to be a member in the docker group.
docker_group_desired_state present indicates creating the group if it doesn't exist. Alternative is absent.
docker_user Name of the user that the docker will be owned by.
docker_user_home Home directory for docker user.
docker_user_shell Shell for docker_user.
docker_user_desired_state present indicates creating the user if it doesn't exist. Alternative is absent.
docker_nonroot_users List of users to add to the docker group
docker_add_nonroot_users Boolean variable. Values can either be true or false. Setting to true will run the task that will add additionally provided users in the variable docker_nonroot_users to the docker group. If set to false, the specific task that adds user to docker group will be skipped. Defaults to false
docker_repo_gpg_key GPG repo for docker repository
docker_centos_pre_reqs Docker recommends the installation of both these packages on the EL/CentOS docker host system and as such, they are considered pre-requisites.
docker_centos_pre_reqs_desired_state Desired state for Docker pre-requisite apps on EL/CentOS systems.
docker_repo_centos Repository baseurl for Docker on EL/CentOS based systems.
docker_repo_centos_name Repository name for Docker on EL/CentOS based systems.
docker_repo_centos_description Description to be added in EL/CentOS based repository file for Docker.
docker_repo_centos_gpgcheck Boolean for whether to perform gpg check against Docker on EL/CentOS based systems.
docker_repo_centos_enabled Boolean to set so that Docker repository is enabled on EL/CentOS based systems.
docker_repo_centos_filename Name of the repository file that will be stored at /yum/sources.list.d/docker-ce.repo on EL/CentOS based systems.
docker_repo_centos_desired_state present indicates creating the repository file if it doesn't exist on EL/CentOS based systems. Alternative is absent (not recommended as it will prevent from installation of docker packages).
docker_debian_pre_reqs_desired_state Desired state for Docker pre-requisite apps on Debian family systems.
docker_repo_debian Docker repo URL for Debain systems. Utilized facts such as ansible_architecture.
docker_repo_debain_filename Name of the repository file that will be stored at /etc/apt/sources.list.d/ on Debian based systems.
docker_repo_debian_desired_state present indicates creating the repository file if it doesn't exist on Debian based systems. Alternative is absent (not recommended as it will prevent from installation of docker packages).

Dependencies

None

Example Playbook

For default behaviour of role (i.e. installation of docker package) in ansible playbooks.

- hosts: servers
  roles:
    - darkwizard242.docker

For customizing behavior of role (i.e. adding a list of users to be added to docker group - example shown below is adding ubuntu && darkwizard to docker group) in ansible playbooks.

- hosts: servers
  roles:
    - darkwizard242.docker
  vars:
    docker_add_nonroot_users: true
    docker_nonroot_users:
      - darkwizard242
      - ubuntu

For customizing behavior of role (i.e. skipping the task that adds a list of users to be added to docker group) in ansible playbooks.

- hosts: servers
  roles:
    - darkwizard242.docker
  vars:
    docker_add_nonroot_users: false

For customizing behavior of role (i.e. un-installation of docker-ce, docker-ce-cli, containerd.io packages) in ansible playbooks.

- hosts: servers
  roles:
    - darkwizard242.docker
  vars:
    docker_apps_desired_state: absent

License

MIT

Author Information

This role was created by Ali Muhammad.

About

Docker-ce stable version installation/uninstallation.

Install
ansible-galaxy install darkwizard242/ansible-role-docker
GitHub repository
License
mit
Downloads
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Owner
Senior DevOps/CloudOps Engineer. Dedicated to Automating everything I come across. Love to work on and learn new technologies/tools everyday!