Docker

====== Installing Docker

Docker is set up using packages from the Docker's CE Stable package repository. If you’re using CentOS, make sure to enable the centos-extra repository. For Red Hat, you also need to add centos-extra and include the CentOS GPG key. These additional requirements are not included in this setup. The latest version of Docker from the repository will be installed, unless you specify a different version with docker_version. Both the Docker engine and the Docker command line interface (CLI) will be the same version.

You can optionally enable user namespaces by setting the variable docker_user_namespace to yes (default is no). This might require updating the GRUB configuration and restarting the server. A standard user for remapping will also be added to /etc/subuid and /etc/subgid.

You can add a list of environment variables to Docker’s systemd service using docker_env.

Requirements

Check meta/main.yml for requirements.

Role Variables

Check defaults/main.yml for available role variables.

Dependencies

The centos-extra repository is necessary for both CentOS and Red Hat (as mentioned earlier).

Example Playbook

Here’s a simple example:

- hosts: servers
  roles:
    - docker

TODO

• Support for Docker EE
• Ensure the Docker service restarts after the firewalld service if it is active
• Install bash completion for docker-compose

License

This work is licensed under the MIT license.

Author Information

Luis Gracia while at EMBL-EBI:

• Email: luis.gracia [at] ebi.ac.uk
• GitHub: luisico
• Galaxy: luisico