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moar docs

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added docs for new v2 features
restructures modules bar and core/extras info into their own pages
changed templates to refer to the new pages
added some missing ansible.cfg options
more info on gathering setting
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Brian Coca 2015-07-17 13:53:13 -04:00
commit 173f27531c
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docsite/rst/modules.rst
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@ -2,48 +2,20 @@ About Modules
=============
.. toctree::
:maxdepth: 4
:maxdepth: 1
.. _modules_intro:
modules_intro
modules_core
modules_extra
common_return_values
Introduction
````````````
Ansible ships with a number of modules (called the 'module library')
that can be executed directly on remote hosts or through :doc:`Playbooks <playbooks>`.
Users can also write their own modules. These modules can control system resources, like services, packages, or files (anything really), or
handle executing system commands.
Users can also write their own modules. These modules can control system resources,
like services, packages, or files (anything really), or handle executing system commands.
Let's review how we execute three different modules from the command line::
ansible webservers -m service -a "name=httpd state=started"
ansible webservers -m ping
ansible webservers -m command -a "/sbin/reboot -t now"
Each module supports taking arguments. Nearly all modules take ``key=value``
arguments, space delimited. Some modules take no arguments, and the command/shell modules simply
take the string of the command you want to run.
From playbooks, Ansible modules are executed in a very similar way::
- name: reboot the servers
action: command /sbin/reboot -t now
Which can be abbreviated to::
- name: reboot the servers
command: /sbin/reboot -t now
All modules technically return JSON format data, though if you are using the command line or playbooks, you don't really need to know much about
that. If you're writing your own module, you care, and this means you do not have to write modules in any particular language -- you get to choose.
Modules are `idempotent`, meaning they will seek to avoid changes to the system unless a change needs to be made. When using Ansible
playbooks, these modules can trigger 'change events' in the form of notifying 'handlers' to run additional tasks.
Documentation for each module can be accessed from the command line with the ansible-doc tool::
ansible-doc yum
.. seealso::
@ -59,4 +31,3 @@ Documentation for each module can be accessed from the command line with the ans
Questions? Help? Ideas? Stop by the list on Google Groups
`irc.freenode.net <http://irc.freenode.net>`_
#ansible IRC chat channel