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.. contents:: Topics
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Vars Plugins
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------------
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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.
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Vars plugins were partially implemented in Ansible 2.0 and rewritten to be fully implemented starting with Ansible 2.4.
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The :doc:`host_group_vars <vars/host_group_vars>` plugin shipped with Ansible enables reading variables from :ref:`host_vars` and :ref:`group_vars`.
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.. _enable_vars:
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Enabling Vars Plugins
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+++++++++++++++++++++
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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>`.
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.. _using_vars:
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Using Vars Plugins
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++++++++++++++++++
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Vars plugins are used automatically after they are enabled.
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.. _vars_plugin_list:
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Plugin Lists
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++++++++++++
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You can use ``ansible-doc -t vars -l`` to see the list of available plugins.
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Use ``ansible-doc -t vars <plugin name>`` to see specific plugin-specific documentation and examples.
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.. toctree:: :maxdepth: 1
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:glob:
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vars/*
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.. seealso::
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:doc:`action`
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Ansible Action plugins
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:doc:`cache`
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Ansible Cache plugins
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:doc:`callback`
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Ansible callback plugins
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:doc:`connection`
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Ansible connection plugins
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:doc:`inventory`
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Ansible inventory plugins
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:doc:`shell`
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Ansible Shell plugins
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:doc:`strategy`
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Ansible Strategy plugins
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`User Mailing List <http://groups.google.com/group/ansible-devel>`_
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Have a question? Stop by the google group!
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`irc.freenode.net <http://irc.freenode.net>`_
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#ansible IRC chat channel
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