`host_vars` for Molecule Scenarios
Been working on the enhancing ansible-wireguard-openwisp. I added support
for CentOS and RHEL 7 and 8 which was quite a chore. I have been using Debian
derivatives for all of my development work and it took time to get used to
workings of CentOS.
The names of some system packages are different, the configuration files live in different places and then there are three ways to install WireGuard. Managing all of this burned a lot of my time. Adding automated tests was another hustle.
CentOS 7 requires ansible_python_interpreter to point to python2 to be
able to run without need of any additional packages. While testing it on an
instance on AWS, I configured this setting in the inventory file, but for
automated tests using molecules, I was clueless.
After some searching on the web, I came across this comment on an issue on molecule’s GitHub repository
which suggests to configure host_vars of the provisioner. After this,
the tests run smoothly for CentOS 7.
provisioner:
name: ansible
lint:
name: ansible-lint
inventory:
host_vars:
my_instance:
ansible_python_interpreter: "/home/core/bin/python"