80 lines
2.1 KiB
ReStructuredText
80 lines
2.1 KiB
ReStructuredText
.. _strategy_plugins:
|
|
|
|
Strategy Plugins
|
|
================
|
|
|
|
.. contents::
|
|
:local:
|
|
:depth: 2
|
|
|
|
Strategy plugins control the flow of play execution by handling task and host scheduling.
|
|
|
|
.. _enable_strategy:
|
|
|
|
Enabling strategy plugins
|
|
-------------------------
|
|
|
|
All 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 :ref:`linear <linear_strategy>` 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 <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.
|
|
|
|
|
|
.. seealso::
|
|
|
|
:ref:`about_playbooks`
|
|
An introduction to playbooks
|
|
:ref:`inventory_plugins`
|
|
Ansible inventory plugins
|
|
:ref:`callback_plugins`
|
|
Ansible callback plugins
|
|
:ref:`playbooks_filters`
|
|
Jinja2 filter plugins
|
|
:ref:`playbooks_tests`
|
|
Jinja2 test plugins
|
|
:ref:`playbooks_lookups`
|
|
Jinja2 lookup plugins
|
|
`User Mailing List <https://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
|