Strategy plugins
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 Controlling playbook execution: strategies and more.
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 ansible.cfg.
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. By default Ansible uses the linear plugin. You can change this default in Ansible configuration using an environment variable:
export ANSIBLE_STRATEGY=free
or in the ansible.cfg file:
[defaults]
strategy=linear
You can also specify the strategy plugin in the play via the strategy keyword 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
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.
See also
- Intro to playbooks
An introduction to playbooks
- Inventory plugins
Inventory plugins
- Callback plugins
Callback plugins
- Filter plugins
Filter plugins
- Test plugins
Test plugins
- Lookup plugins
Lookup plugins
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