Ansible Role: molecule

Ansible role for installing molecule into a Python3 VirtualEnv.

Requirements

This role has been tested on Ansible 2.7.0+ against the following Linux Distributions:

Amazon Linux 2
CentOS 8
CentOS 7
Debian 10
Fedora 29
Fedora 30
Fedora 31
Ubuntu 18.04 LTS

Disclaimer

If you have any problems please create a GitHub issue, I maintain this role in my spare time so I cannot promise a speedy fix delivery.

Role Variables

Variable	Description	Default Value
`molecule_version`	Use a specific version of molecule, eg. `2.22.0`. Specify `false` for latest.	`false`
`molecule_support_packages`	Install molecule support packages (eg. Docker)	[]
`molecule_install_dir`	Installation directory to put molecule virtual environments.	`$HOME/.virtualenvs`
`molecule_venv_name`	Name for the molecule Virtualenv.	molecule
`molecule_venv_suffix`	Add a custom suffix to virtualenv.	`molecule_version`
`molecule_venv_site_packages`	Allow venv to inherit packages from global site-packages.	`false`
`molecule_install_venv_helper`	Install a venv helper to launch venv executables from a "bin" directory.	`true`
`molecule_bin_dir`	"bin" directory to install venv-helpers to.	`$HOME/bin`
`molecule_install_os_dependencies`	Allow role to install OS dependencies.	`false`
`molecule_python3_path`	Specify a path to a specific python version to use in virtualenv.	NULL

Dependencies

No dependencies on other roles.

Example Playbook

Example playbook for installing to single user:

- hosts: molecule_hosts
  roles:
     - { role: xanmanning.molecule, molecule_version: 2.22.0 }

Example playbook for installing the latest molecule version globally:

---
- hosts: molecule_hosts
  become: true
  vars:
    molecule_install_os_dependencies: true
    molecule_install_dir: /opt/molecule/bin
    molecule_bin_dir: /usr/bin
    molecule_venv_name: current
    molecule_support_packages:
      - docker
      - lint
  roles:
    - role: xanmanning.molecule

Activating the molecule venv

You need to activate the python3 virtual environment to be able to access molecule. This is done as per the below:

source {{ molecule_install_dir }}/{{ molecule_venv_name }}/bin/activate

In the above example global installation playbook, this would look like the following:

source /opt/molecule/bin/current/bin/activate

License

BSD 3-clause

Author Information

Xan Manning

PyratLabs / ansible-role-molecule