mirror of
https://github.com/ansible-collections/community.general.git
synced 2024-09-14 20:13:21 +02:00
373b1dcf59
* Docs refactor as outlined in https://github.com/ansible/proposals/issues/79. Moves content into 'guides'; refactors TOC; fixes CSS; design tweaks to layout and CSS; fixes generated plugin, CLI and module docs to fix links accodingly; more. * Adding extra blank line for shippable
96 lines
3.9 KiB
ReStructuredText
96 lines
3.9 KiB
ReStructuredText
================
|
|
Python 3 Support
|
|
================
|
|
|
|
Ansible 2.2, 2.3, and 2.4 feature a tech preview of Python 3 support. This topic discusses how you can test to make sure your modules and playbooks work with Python 3.
|
|
|
|
.. note:: Ansible supports Python version 3.5 and above only.
|
|
|
|
|
|
.. note:: Technology preview features provide early access to upcoming product innovations,
|
|
enabling you to test functionality and provide feedback during the development process.
|
|
Please be aware that tech preview features may not be functionally complete and are not
|
|
intended for production use. To report a Python 3 bug, please see `Community Information & Contributing <http://docs.ansible.com/ansible/community.html#i-d-like-to-report-a-bug>`_.
|
|
|
|
Testing Python 3 with commands and playbooks
|
|
--------------------------------------------
|
|
|
|
* Run Ansible 2.2+ - See :ref:`from_source`
|
|
* To test Python 3 on the controller, run your ansible command via
|
|
``python3``. For example:
|
|
|
|
.. code-block:: shell
|
|
|
|
$ python3 /usr/bin/ansible localhost -m ping
|
|
$ python3 /usr/bin/ansible-playbook sample-playbook.yml
|
|
|
|
You can also install Ansible using :program:`pip` for Python3 which will make the default
|
|
:command:`/usr/bin/ansible` run with Python3:
|
|
|
|
.. code-block:: shell
|
|
|
|
$ virtualenv --python=python3 py3-ansible
|
|
$ source ./py3-ansible/bin/activate
|
|
$ pip3 install ansible
|
|
$ ansible --version | grep "python version"
|
|
python version = 3.6.2 (default, Sep 22 2017, 08:28:09) [GCC 7.2.1 20170915 (Red Hat 7.2.1-2)]
|
|
|
|
On systems with SELinux installed, such as Red Hat Enterprise Linux or Fedora, the SELinux Python libraries also need to be copied over.
|
|
|
|
.. code-block:: shell
|
|
|
|
$ cp -r -v /usr/lib64/python3.*/site-packages/selinux/ ./py3-ansible/lib64/python3.*/site-packages/
|
|
$ cp -v /usr/lib64/python3.*/site-packages/*selinux*.so ./py3-ansible/lib64/python3.*/site-packages/
|
|
|
|
.. note:: Individual Linux distribution packages may be packaged for Python2 or Python3. When running from
|
|
distro packages you'll only be able to use Ansible with the Python version for which it was
|
|
installed. Sometimes distros will provide a means of installing for several Python versions
|
|
(via a separate package or via some commands that are run after install). You'll need to check
|
|
with your distro to see if that applies in your case.
|
|
|
|
|
|
Testing Python 3 module support
|
|
--------------------------------
|
|
|
|
* Set the ansible_python_interpreter configuration option to
|
|
:command:`/usr/bin/python3`. The ``ansible_python_interpreter`` configuration option is
|
|
usually set per-host as an inventory variable associated with a host or group of hosts:
|
|
|
|
.. code-block:: ini
|
|
|
|
# Example inventory that makes an alias for localhost that uses python3
|
|
[py3-hosts]
|
|
localhost-py3 ansible_host=localhost ansible_connection=local
|
|
|
|
[py3-hosts:vars]
|
|
ansible_python_interpreter=/usr/bin/python3
|
|
|
|
See :doc:`intro_inventory` for more information.
|
|
|
|
* Run your command or playbook:
|
|
|
|
.. code-block:: shell
|
|
|
|
$ ansible localhost-py3 -m ping
|
|
$ ansible-playbook sample-playbook.yml
|
|
|
|
|
|
Note that you can also use the :option:`-e` command line option to manually
|
|
set the python interpreter when you run a command. For example:
|
|
|
|
.. code-block:: shell
|
|
|
|
$ ansible localhost -m ping -e 'ansible_python_interpreter=/usr/bin/python3'
|
|
$ ansible-playbook sample-playbook.yml -e 'ansible_python_interpreter=/usr/bin/python3'
|
|
|
|
What to do if an incompatibility is found
|
|
-----------------------------------------
|
|
|
|
If you find a bug while testing modules with Python3 you can submit a bug
|
|
report on `Ansible's GitHub project
|
|
<https://github.com/ansible/ansible/issues/>`_. Be sure to mention Python3 in
|
|
the bug report so that the right people look at it.
|
|
|
|
If you would like to fix the code and submit a pull request on github, you can
|
|
refer to :doc:`dev_guide/developing_python3` for information on how we fix
|
|
common Python3 compatibility issues in the Ansible codebase.
|