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Minor docs restructuring

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Michael DeHaan 2012-03-08 13:53:48 -05:00
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html/_sources/patterns.txt
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@ -1,5 +1,5 @@
Patterns
========
The Inventory File, Patterns, and Groups
========================================
How to select hosts you wish to manage
@ -10,6 +10,9 @@ How to select hosts you wish to manage
:doc:`playbooks`
Learning ansible's configuration management language
Inventory File Format
+++++++++++++++++++++
Ansible works against multiple systems in your infrastructure at the
same time. It does this by selecting portions of systems listed in Ansible's inventory file,
which defaults to /etc/ansible/hosts, and looks like this::
@ -25,45 +28,36 @@ which defaults to /etc/ansible/hosts, and looks like this::
two.example.com
three.example.com
Targetting All Systems
``````````````````````
The pattern 'all' or '*' targets all systems in the inventory file.
Specific Hosts
``````````````
Selecting Targets
+++++++++++++++++
It is possible to address specific hosts:
These patterns target all hosts in the inventory file::
all
*
It is also possible to address specific hosts::
one.example.com
one.example.com:two.example.com
Groups
``````
The following patterns address one or more groups:
The following patterns address one or more groups, which are denoted with the bracket
headers in the inventory file::
webservers
webservers:dbservers
There is also a magic group 'ungrouped' which selects systems not in a group.
Wildcards
`````````
Individual hosts, but not groups, can also be referenced using wildcards:
*.example.com
*.com
Mixing Things Up
````````````````
Specific hosts, wildcards, and groups can all be mixed in the same pattern
It's also ok to mix wildcard patterns and groups at the same time::
one*.com:dbservers
It is not possible to target a host not in the inventory file.
NOTE: It is not possible to target a host not in the inventory file.