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#ANSIBLE INSTALL JAVA ON MAC HOW TO#
#ANSIBLE INSTALL JAVA ON MAC VERIFICATION#

You can also use environment variables anywhere inside the molecule.yml file, so you could have an environment variable like MOLECULE_IMAGE and specify a different OS base image whenever you do a test run, without adding additional scenarios (besides default). In many of my roles, I use a custom pre-made Docker image which already has Python and Ansible, so I removed the Dockerfile.j2 template, and updated the image in my molecule.yml to point to my public Docker Hub images. You can customize and/or remove pretty much everything.

#ANSIBLE INSTALL JAVA ON MAC VERIFICATION#

tests/: This directory contains a basic Testinfra test, which you can expand on if you want to run additional verification of your build environment state after Ansible's done its thing.

But for more complex roles, you might need to do some additional setup, or run other roles prior to running your role. For simpler roles, you can usually leave it as-is (it will just run your role and nothing else).

playbook.yml: This is the playbook Molecule uses to test your role.

#ANSIBLE INSTALL JAVA ON MAC HOW TO#

molecule.yml: Tells molecule everything it needs to know about your testing: what OS to use, how to lint your role, how to test your role, etc.INSTALL.rst: Contains instructions for installing required dependencies for running molecule tests.The key is this makes sure important dependencies like Python, sudo, and Bash are available inside the build/test environment. You can customize it to your heart's content, and you can even use your own Docker image instead of building the container from scratch every time-I'll cover how to do that later though. Dockerfile.j2: This is the Dockerfile used to build the Docker container used as a test environment for your role.Here's a quick rundown of what all these files are: It contains the following: $ cd geerlingguy.example/molecule/default/ & ls Inside the Molecule directory is a default directory, indicating the default test scenario. This command uses ansible-galaxy behind the scenes to generate a new Ansible role, then it injects a molecule directory in the role, and sets it up to run builds and test runs in a docker environment. Installing MoleculeĪssuming you have pip installed, Installing Molecule is quite easy: pip install moleculeĬheck if it's working: $ molecule -versionīefore we start integrating Molecule into an existing role, let's take a look at the 'happy path'-using Molecule itself to init a new role: molecule init role geerlingguy.example -d docker In this blog post, I'll walk you through how to use Molecule, and how I converted all my existing roles (which were using a different testing system) to use Molecule and Ansible Lint-based tests. There was also a bit of motivation from readers of Ansible for DevOps, many of whom have asked for a new section on Molecule specifically!

After the announcement on September 26 that Ansible will be adopting molecule and ansible-lint as official 'Ansible by Red Hat' projects, I started moving more of my public Ansible projects over to Molecule-based tests instead of using the homegrown Docker-based Ansible testing rig I'd been using for a few years.