You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
ansible/docs/docsite/rst/plugins/strategy.rst

83 lines
2.1 KiB
ReStructuredText

.. 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` file:
.. code-block:: ini
[defaults]
strategy=linear
You can also specify the strategy plugin in the play via the :ref:`strategy` keyword::
- 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
`User Mailing List <http://groups.google.com/group/ansible-devel>`_
Have a question? Stop by the google group!
`irc.freenode.net <http://irc.freenode.net>`_
#ansible IRC chat channel