78 lines
2.2 KiB
ReStructuredText
78 lines
2.2 KiB
ReStructuredText
.. _strategy_plugins:
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Strategy plugins
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================
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.. contents::
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:local:
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:depth: 2
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Strategy plugins control the flow of play execution by handling task and host scheduling. For more information on using strategy plugins and other ways to control execution order, see :ref:`playbooks_strategies`.
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.. _enable_strategy:
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Enabling strategy plugins
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-------------------------
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All strategy plugins shipped with Ansible are enabled by default. You can enable a custom strategy plugin by
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putting it in one of the lookup directory sources configured in :ref:`ansible.cfg <ansible_configuration_settings>`.
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.. _using_strategy:
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Using strategy plugins
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----------------------
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Only one strategy plugin can be used in a play, but you can use different ones for each play in a playbook or ansible run. By default Ansible uses the :ref:`linear <linear_strategy>` plugin. You can change this default in Ansible :ref:`configuration <ansible_configuration_settings>` using an environment variable:
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.. code-block:: shell
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export ANSIBLE_STRATEGY=free
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or in the `ansible.cfg` file:
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.. code-block:: ini
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[defaults]
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strategy=linear
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You can also specify the strategy plugin in the play via the :ref:`strategy keyword <playbook_keywords>` in a play::
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- hosts: all
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strategy: debug
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tasks:
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- copy: src=myhosts dest=/etc/hosts
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notify: restart_tomcat
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- package: name=tomcat state=present
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handlers:
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- name: restart_tomcat
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service: name=tomcat state=restarted
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.. _strategy_plugin_list:
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Plugin list
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-----------
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You can use ``ansible-doc -t strategy -l`` to see the list of available plugins.
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Use ``ansible-doc -t strategy <plugin name>`` to see plugin-specific specific documentation and examples.
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.. seealso::
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:ref:`about_playbooks`
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An introduction to playbooks
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:ref:`inventory_plugins`
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Inventory plugins
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:ref:`callback_plugins`
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Callback plugins
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:ref:`filter_plugins`
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Filter plugins
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:ref:`test_plugins`
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Test plugins
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:ref:`lookup_plugins`
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Lookup plugins
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`User Mailing List <https://groups.google.com/group/ansible-devel>`_
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Have a question? Stop by the google group!
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`irc.libera.chat <https://libera.chat/>`_
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#ansible IRC chat channel
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