ansible/docs/docsite/rst/plugins/vars.rst
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.. contents:: Topics
Vars Plugins
------------
Vars plugins inject additional variable data into Ansible runs that did not come from an inventory source, playbook, or command line. Playbook constructs like 'host_vars' and 'group_vars' work using vars plugins.
Vars plugins were partially implented in Ansible 2.0 and rewritten to be fully implemented starting with Ansible 2.4.
The :doc:`host_group_vars <vars/host_group_vars>` plugin shipped with Ansible enables reading variables from :ref:`host_vars` and :ref:`group_vars`.
Enabling Vars Plugins
+++++++++++++++++++++
You can activate a custom vars plugins by either dropping it into a ``vars_plugins`` directory adjacent to your play, inside a role, or by putting it in one of the directory sources configured in :doc:`ansible.cfg <../config>`.
Plugin Lists
++++++++++++
You can use ``ansible-doc -t vars -l`` to see the list of available plugins.
Use ``ansible-doc -t vars <plugin name>`` to see specific plugin-specific documentation and examples.
.. toctree:: :maxdepth: 1
:glob:
vars/*
.. seealso::
:doc:`action`
Ansible Action plugins
:doc:`cache`
Ansible Cache plugins
:doc:`callback`
Ansible callback plugins
:doc:`connection`
Ansible connection plugins
:doc:`inventory`
Ansible inventory plugins
:doc:`shell`
Ansible Shell plugins
:doc:`strategy`
Ansible Strategy plugins
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