ansible/docs/docsite/rst/playbooks_strategies.rst

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2015-07-20 04:35:49 +02:00
Strategies
===========
Strategies are a way to control play execution. By default, plays run with a ``linear`` strategy, in which all hosts will run each task before any host starts the next task, using the number of forks (default 5) to parallelize.
The ``serial`` directive can 'batch' this behaviour to a subset of the hosts, which then run to
completion of the play before the next 'batch' starts.
A second ``strategy`` ships with Ansible - ``free`` - which allows each host to run until the end of
the play as fast as it can.::
- hosts: all
strategy: free
tasks:
...
.. _strategy_plugins:
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Strategy Plugins
`````````````````
The strategies are implemented as plugins. In the future, new
execution strategies can be added, either locally by users or to Ansible itself by
a code contribution.
One example is ``debug`` strategy. See :doc:`playbooks_debugger` for details.
.. seealso::
:doc:`playbooks`
An introduction to playbooks
:doc:`playbooks_reuse_roles`
Playbook organization by roles
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