Ansible Role for Python Support on CoreOS

This is yet another Ansible role that installs Python onto your CoreOS machine. CoreOS doesn't have Python installed by default, which made Ansible nearly useless. To address this issue, this role downloads and extracts portable-pypy to /home/core/pypy. It also installs pip, which allows you to install Python packages required by Ansible modules you need. There are already many solutions for the same purpose, but I failed to get them working, so I implemented one on my own.

Installation

Clone this repository to roles directory of your playbook, or use ansible-galaxy:

ansible-galaxy install akirak.coreos-python

Usage

Set ansible_python_interpreter to /home/core/pypy/bin/pypy in your inventory:

[core]
core-01

[core:vars]
ansible_ssh_user=core
ansible_python_interpreter=/home/core/pypy/bin/pypy

If you are using Vagrant, your Vagrant file should include something like the following:

    config.vm.provision "ansible" do |ansible|
      ansible.verbose = true
      ansible.playbook = "sites.yml"
      ansible.extra_vars = {
        "ansible_python_interpreter" => "/home/core/pypy/bin/pypy",
        "ansible_user" => "core"
      }
    end

To make Python available before all the other things, your playbook should start as follows (gather_facts: False is necessary):

---
- hosts: core
  gather_facts: False
  roles:
    - akirak.coreos-python
# the rest of your playbook
...

pip is installed as /home/core/pypy/bin/pip. To install pip packages via Ansible, you have to set the path as executable parameter in a pip task:

- name: install docker-py for supporting Docker
  pip:
    name: docker-py
    executable: /home/core/pypy/bin/pip

License

BSD

Author Information

Akira Komamura