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Monolith

Monolith Repo

Molecule is generally used to test playbooks or roles in isolation. However, it can also test them from a monolith repo.

$ tree monolith-repo -L 3 --prune
monolith-repo
 ├── library
 │   └── foo.py
 ├── plugins
 │   └── filters
 │       └── foo.py
 └── roles
     ├── bar
     │   └── README.md
     ├── baz
     │   └── README.md
     └── foo
         └── README.md

The role initialized with Molecule (baz in this case) would simply reference the dependent roles via its converge.yml or meta dependencies.

Molecule can test complex scenarios leveraging this technique.

cd monolith-repo/roles/baz
molecule test

Molecule is simply setting the ANSIBLE_* environment variables. To view the environment variables set during a Molecule operation pass the --debug flag.

$ molecule --debug test

DEBUG: ANSIBLE ENVIRONMENT
---
ANSIBLE_CONFIG: /private/tmp/monolith-repo/roles/baz/molecule/default/.molecule/ansible.cfg

Molecule can be customized any number of ways. Updating the provisioner's env section in molecule.yml to suit the needs of the developer and layout of the project.

provisioner:
  name: ansible
  env:
    ANSIBLE_$VAR: $VALUE