.. contents :: Topics
Strategy Plugins
----------------
Strategy plugins control the flow of play execution by handling task and host scheduling.
.. _enable_strategy:
Enabling Strategy Plugins
+++++++++++++++++++++++++
Strategy plugins shipped with Ansible are enabled by default. You can enable a custom strategy plugin by
putting it in one of the lookup directory sources configured in :ref: `ansible.cfg <ansible_configuration_settings>` .
.. _using_strategy:
Using Strategy Plugins
++++++++++++++++++++++
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.
The default is the :doc: `linear <strategy/linear>` plugin. You can change this default in Ansible :ref: `configuration <ansible_configuration_settings>` using an environment variable:
.. code-block :: shell
export ANSIBLE_STRATEGY=free
or in the `ansible.cfg`
.. code-block :: ini
[defaults]
strategy=linear
You can also specify the strategy plugin in the play via the :ref: `strategy keyword <playbook_keywords>` in a play::
- hosts: all
strategy: debug
tasks:
- copy: src=myhosts dest=/etc/hosts
notify: restart_tomcat
- package: name=tomcat state=present
handlers:
- name: restart_tomcat
service: name=tomcat state=restarted
.. _strategy_plugin_list:
Plugin List
+++++++++++
You can use `` ansible-doc -t strategy -l `` to see the list of available plugins.
Use `` ansible-doc -t strategy <plugin name> `` to see plugin-specific specific documentation and examples.
.. toctree :: :maxdepth: 1
:glob:
strategy/*
.. seealso ::
:ref: `about_playbooks`
An introduction to playbooks
:doc: `inventory`
Ansible inventory plugins
:doc: `callback`
Ansible callback plugins
:ref: `playbooks_filters`
Jinja2 filter plugins
:ref: `playbooks_tests`
Jinja2 test plugins
:ref: `playbooks_lookups`
Jinja2 lookup plugins
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