RedHat Ansible Molecule installer (WSL and native)

Summary

This playbook will install Ansible Molecule and any pre-requisites required for use with Docker, as well as Docker itself.

It is designed to be executed on the Ansible Control Node and will make all changes locally.

It is expected to work on Ubuntu 18.xx onwards up to Ubuntu 22.04 and, potentially, Debian 10 onwards.
Note: does not currently work on Ubuntu 23.04

Requires Ansible to be installed.

Roles

installer

installer: Included tasks: installer_prep

• Enable systemd for WSL2

installer: Included tasks: installer_docker

• Delete any existing Docker config/keys from apt
• Install Docker-ce and docker-compose from Docker.com repository
• Install Docker Module for Python
• Ensure group "docker" exists
• Added user to docker group
• Group change notification (notify user to run newgrp for group-permissions to take effect)

installer: Included tasks: installer_ansible

• Install ansible-core and ansible-lint using PIP

installer: Included tasks: installer_molecule

• Install Molecule pre-reqs (Python3 and libssl)
• Install/upgrade setuptools
• Install Molecule
• Install/upgrade ansible-lint
• Install Molecule-Docker
• Install Molecule-Docker Driver

Usage

Invoke using:

ansible-playbook -K main.yml --tags <ROLENAME>

e.g.

ansible-playbook -K main.yml --tags installer

Notes

groupvars/main.yml contains a mapping lookup for ansible_distribution_file_variety and ansible_architecture to construct the correct Docker repository URI.

molecule_driver_cleanup and docker_cleanup_required are set to true by default.
The effect is that the playbook isn't, strictly speaking, fully idempotent.
However, since those tasks ought to be run (according to the docs) and shouldn't break anything if run each time it's more of a technicality.

To do

• Make playbook support additional Operating Systems (e.g. CentOS)
• Break out sub-tasks such as docker_install, ansible_install
• Create 'Uninstall' role

License

GPL-3.0-or-later