lorf / ansible-role-docker-ol

Ansible Role - Docker

Ansible Role: Docker

An Ansible Role that installs Docker on Oracle Linux.

Requirements

None.

Role Variables

Available variables are listed below, along with default values (see defaults/main.yml):

docker_package: "docker-engine"
docker_package_state: present

You can also specify a specific version of Docker to install using the distribution-specific format: OracleLinux: docker-engine-<VERSION>.

You can control whether the package is installed, uninstalled, or at the latest version by setting docker_package_state to present, absent, or latest, respectively. Note that the Docker daemon will be automatically restarted if the Docker package is updated. This is a side effect of flushing all handlers (running any of the handlers that have been notified by this and any other role up to this point in the play).

docker_service_state: started
docker_service_enabled: true
docker_restart_handler_state: restarted

Variables to control the state of the docker service, and whether it should start on boot. If you're installing Docker inside a Docker container without systemd or sysvinit, you should set these to stopped and set the enabled variable to no.

docker_install_compose: true
docker_compose_version: "1.26.0"
docker_compose_path: /usr/local/bin/docker-compose

Docker Compose installation options.

docker_users:
  - user1
  - user2

A list of system users to be added to the docker group (so they can use Docker on the server).

Use with Ansible (and docker Python library)

Many users of this role wish to also use Ansible to then build Docker images and manage Docker containers on the server where Docker is installed. In this case, you can easily add in the docker Python library using the geerlingguy.pip role:

- hosts: all

  vars:
    pip_install_packages:
      - name: docker

  roles:
    - geerlingguy.pip
    - lorf.docker-ol

Dependencies

None.

Example Playbook

- hosts: all
  roles:
    - lorf.docker-ol

License

MIT / BSD

Author Information

This role was created in 2017 by Jeff Geerling, author of Ansible for DevOps.