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8
html/YAMLScripts.html
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<script type="text/javascript" src="_static/underscore.js"></script> <script type="text/javascript" src="_static/underscore.js"></script>
<script type="text/javascript" src="_static/doctools.js"></script> <script type="text/javascript" src="_static/doctools.js"></script>
<link rel="top" title="Ansible v0.0.1 documentation" href="index.html" /> <link rel="top" title="Ansible v0.0.1 documentation" href="index.html" />
<link rel="next" title="Playbooks" href="playbooks.html" /> <link rel="next" title="Playbooks: Ansible for Deployment, Configuration Management, and Orchestration" href="playbooks.html" />
<link rel="prev" title="Ansible Modules" href="modules.html" /> <link rel="prev" title="Ansible Modules" href="modules.html" />
</head> </head>
<body> <body>
@ -34,7 +34,7 @@
<a href="genindex.html" title="General Index" <a href="genindex.html" title="General Index"
accesskey="I">index</a></li> accesskey="I">index</a></li>
<li class="right" > <li class="right" >
<a href="playbooks.html" title="Playbooks" <a href="playbooks.html" title="Playbooks: Ansible for Deployment, Configuration Management, and Orchestration"
accesskey="N">next</a> |</li> accesskey="N">next</a> |</li>
<li class="right" > <li class="right" >
<a href="modules.html" title="Ansible Modules" <a href="modules.html" title="Ansible Modules"
@ -143,7 +143,7 @@ languages:
title="previous chapter">Ansible Modules</a></p> title="previous chapter">Ansible Modules</a></p>
<h4>Next topic</h4> <h4>Next topic</h4>
<p class="topless"><a href="playbooks.html" <p class="topless"><a href="playbooks.html"
title="next chapter">Playbooks</a></p> title="next chapter">Playbooks: Ansible for Deployment, Configuration Management, and Orchestration</a></p>
<h3>This Page</h3> <h3>This Page</h3>
<ul class="this-page-menu"> <ul class="this-page-menu">
<li><a href="_sources/YAMLScripts.txt" <li><a href="_sources/YAMLScripts.txt"
@ -173,7 +173,7 @@ languages:
<a href="genindex.html" title="General Index" <a href="genindex.html" title="General Index"
>index</a></li> >index</a></li>
<li class="right" > <li class="right" >
<a href="playbooks.html" title="Playbooks" <a href="playbooks.html" title="Playbooks: Ansible for Deployment, Configuration Management, and Orchestration"
>next</a> |</li> >next</a> |</li>
<li class="right" > <li class="right" >
<a href="modules.html" title="Ansible Modules" <a href="modules.html" title="Ansible Modules"

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html/_sources/index.txt
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@ -48,6 +48,16 @@ to orchestrate systems in lots of diverse places.
Ansible is an GPLv3 licensed open source project, so see the contributions section for how to Ansible is an GPLv3 licensed open source project, so see the contributions section for how to
get involved. get involved.
Communicate and Get Involved
````````````````````````````
* Join the `ansible-project mailing list <http://groups.google.com/group/ansible-project>`_ on Google Groups
* Join `#ansible <irc://irc.freenode.net/#ansible>`_ on the `freenode IRC network <http://freenode.net/>`_
* Visit the `project page <https://github.com/ansible/ansible>`_ on Github
- View the `issue tracker <https://github.com/ansible/ansible/issues>`_
Contents Contents
======== ========
@ -61,5 +71,4 @@ Contents
playbooks playbooks
examples examples
api api
communicate
man man

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@ -1,6 +1,9 @@
Ansible Modules Ansible Modules
=============== ===============
Ansible ships with a number of modules that can be executed directly on remote hosts or through
ansible playbooks.
.. seealso:: .. seealso::
:doc:`examples` :doc:`examples`
@ -10,16 +13,8 @@ Ansible Modules
:doc:`api` :doc:`api`
Examples of using modules with the Python API Examples of using modules with the Python API
Module Idempotence
About Modules ```````````````````
`````````````
Ansible ships with a number of modules that can be executed directly on remote hosts or through
ansible playbooks.
Idempotence
```````````
Most modules other than command are idempotent, meaning they will seek to avoid changes Most modules other than command are idempotent, meaning they will seek to avoid changes
unless a change needs to be made. When using ansible playbooks, these modules can unless a change needs to be made. When using ansible playbooks, these modules can
@ -189,7 +184,7 @@ yum
This module is in plan. This module is in plan.
WRITING YOUR OWN MODULES writing your own modules
```````````````````````` ````````````````````````
To write your own modules, simply follow the convention of those already available in To write your own modules, simply follow the convention of those already available in

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html/_sources/patterns.txt
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Patterns The Inventory File, Patterns, and Groups
======== ========================================
How to select hosts you wish to manage How to select hosts you wish to manage
@ -10,6 +10,9 @@ How to select hosts you wish to manage
:doc:`playbooks` :doc:`playbooks`
Learning ansible's configuration management language Learning ansible's configuration management language
Inventory File Format
+++++++++++++++++++++
Ansible works against multiple systems in your infrastructure at the 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, 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:: 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 two.example.com
three.example.com three.example.com
Targetting All Systems
``````````````````````
The pattern 'all' or '*' targets all systems in the inventory file. Selecting Targets
+++++++++++++++++
Specific Hosts
``````````````
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
one.example.com:two.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
webservers:dbservers 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: Individual hosts, but not groups, can also be referenced using wildcards:
*.example.com *.example.com
*.com *.com
Mixing Things Up It's also ok to mix wildcard patterns and groups at the same time::
````````````````
Specific hosts, wildcards, and groups can all be mixed in the same pattern
one*.com:dbservers 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.

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@ -1,5 +1,5 @@
Playbooks Playbooks: Ansible for Deployment, Configuration Management, and Orchestration
========= ==============================================================================
.. seealso:: .. seealso::
@ -11,72 +11,71 @@ Playbooks
Learn about how to select hosts Learn about how to select hosts
Playbooks are a completely different way to use ansible and are particularly awesome. Playbooks are a completely different way to use ansible and are particularly awesome. They are the basis for a really simple configuration management and deployment system, unlike any that already exist, and one that is very well suited to deploying complex multi-machine applications. While you might run the main ansible program for ad-hoc tasks, playbooks are more likely to be kept in source control and used to push out your configuration or assure the configurations of your remote systems are in spec.
They are the basis for a really simple configuration management and deployment system, unlike any that already exist, and one that is very well suited to deploying complex multi-machine applications. While you might run the main ansible program for ad-hoc tasks, playbooks are more likely to be kept in source control and used to push out your configuration or assure the configurations of your remote systems are in spec.
Playbook Example Playbook Example
```````````````` ````````````````
Playbooks are expressed in YAML format and have a minimum of syntax. Each playbook is composed Playbooks are expressed in YAML format and have a minimum of syntax. Each playbook is composed
of one or more patterns in a list. By composing a playbook of multiple patterns, it is possible of one or more 'plays' in a list. By composing a playbook of multiple 'plays', it is possible
to orchestrate multi-machine deployments, running certain steps on all machines in to orchestrate multi-machine deployments, running certain steps on all machines in
the webservers group, then certain steps on the database server group, then more commands the webservers group, then certain steps on the database server group, then more commands
back on the webservers group, etc:: back on the webservers group, etc::
--- ---
- hosts: all - hosts: webservers
vars: vars:
http_port: 80 http_port: 80
max_clients: 200 max_clients: 200
user: root user: root
tasks: tasks:
- include: base.yml somevar=3 othervar=4 - include: base.yml somevar=3 othervar=4
- name: write the apache config file - name: write the apache config file
action: template src=/srv/httpd.j2 dest=/etc/httpd.conf action: template src=/srv/httpd.j2 dest=/etc/httpd.conf
notify: notify:
- restart apache - restart apache
- name: ensure apache is running - name: ensure apache is running
action: service name=httpd state=started action: service name=httpd state=started
handlers: handlers:
- include: handlers.yml - include: handlers.yml
Hosts line Hosts line
`````````` ``````````
The hosts line is alist of one or more groups or host patterns, seperated by colons. The hosts line is alist of one or more groups or host patterns, seperated by colons, as
described in the 'patterns' documentation.
webservers:dbservers:*.foo.example.com
Vars section Vars section
```````````` ````````````
A list of variables that can be used in the 'action' lines of the template, or in A list of variables that can be used in the templates, action lines, or included files.
included templates. Variables are deferenced like this:: Variables are deferenced using ``jinja2`` syntax like this::
{{ varname }} {{ varname }}
These variables will be pushed down to the managed systems for use in templating operations. These variables will be pushed down to the managed systems for use in templating operations, where
the way to dereference them in templates is exactly the same.
Further, if there are discovered variables about the system (say, if facter or ohai were Further, if there are discovered variables about the system (say, if facter or ohai were
installed) these variables bubble up back into the playbook, and can be used on each installed) these variables bubble up back into the playbook, and can be used on each
system just like explicitly set variables. Facter variables are prefixed with 'facter' system just like explicitly set variables. Facter variables are prefixed with 'facter_'
and Ohai variables are prefixed with 'ohai'. and Ohai variables are prefixed with 'ohai_'.
Tasks list Tasks list
`````````` ``````````
Tasks are executed in order, one at a time, against all machines matched by the host Each play contains a list of tasks. Tasks are executed in order, one at a time, against
pattern, before moving on to the next task. Failed tasks are taken out of the rotation. all machines matched by the play's host pattern, before moving on to the next task.
Hosts with failed tasks are taken out of the rotation for the entire playbook. If things fail,
correct the problem and rerun. Modules other than command are idempotent, meaning if you
run them again, they will make the changes they are told to make to bring the system to
the desired state.
Task name and comment Task name and action
````````` `````````````````````
Each task has a name (required) and optional comment. This is for informational purposes only Every task must have a name, which is included in the output from running the playbook.
Task action
```````````
The action line is the name of an ansible module followed by parameters. Usually these The action line is the name of an ansible module followed by parameters. Usually these
are expressed in key=value form, except for the command module, which looks just like a Linux/Unix are expressed in key=value form, except for the command module, which looks just like a Linux/Unix

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@ -23,7 +23,7 @@
<script type="text/javascript" src="_static/underscore.js"></script> <script type="text/javascript" src="_static/underscore.js"></script>
<script type="text/javascript" src="_static/doctools.js"></script> <script type="text/javascript" src="_static/doctools.js"></script>
<link rel="top" title="Ansible v0.0.1 documentation" href="index.html" /> <link rel="top" title="Ansible v0.0.1 documentation" href="index.html" />
<link rel="next" title="Communicate and Get Involved" href="communicate.html" /> <link rel="next" title="Man Pages" href="man.html" />
<link rel="prev" title="Examples" href="examples.html" /> <link rel="prev" title="Examples" href="examples.html" />
</head> </head>
<body> <body>
@ -34,7 +34,7 @@
<a href="genindex.html" title="General Index" <a href="genindex.html" title="General Index"
accesskey="I">index</a></li> accesskey="I">index</a></li>
<li class="right" > <li class="right" >
<a href="communicate.html" title="Communicate and Get Involved" <a href="man.html" title="Man Pages"
accesskey="N">next</a> |</li> accesskey="N">next</a> |</li>
<li class="right" > <li class="right" >
<a href="examples.html" title="Examples" <a href="examples.html" title="Examples"
@ -90,8 +90,8 @@ be used as a framework to rapidly build powerful applications and scripts.</p>
<p class="topless"><a href="examples.html" <p class="topless"><a href="examples.html"
title="previous chapter">Examples</a></p> title="previous chapter">Examples</a></p>
<h4>Next topic</h4> <h4>Next topic</h4>
<p class="topless"><a href="communicate.html" <p class="topless"><a href="man.html"
title="next chapter">Communicate and Get Involved</a></p> title="next chapter">Man Pages</a></p>
<h3>This Page</h3> <h3>This Page</h3>
<ul class="this-page-menu"> <ul class="this-page-menu">
<li><a href="_sources/api.txt" <li><a href="_sources/api.txt"
@ -121,7 +121,7 @@ be used as a framework to rapidly build powerful applications and scripts.</p>
<a href="genindex.html" title="General Index" <a href="genindex.html" title="General Index"
>index</a></li> >index</a></li>
<li class="right" > <li class="right" >
<a href="communicate.html" title="Communicate and Get Involved" <a href="man.html" title="Man Pages"
>next</a> |</li> >next</a> |</li>
<li class="right" > <li class="right" >
<a href="examples.html" title="Examples" <a href="examples.html" title="Examples"

10
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@ -24,7 +24,7 @@
<script type="text/javascript" src="_static/doctools.js"></script> <script type="text/javascript" src="_static/doctools.js"></script>
<link rel="top" title="Ansible v0.0.1 documentation" href="index.html" /> <link rel="top" title="Ansible v0.0.1 documentation" href="index.html" />
<link rel="next" title="API" href="api.html" /> <link rel="next" title="API" href="api.html" />
<link rel="prev" title="Playbooks" href="playbooks.html" /> <link rel="prev" title="Playbooks: Ansible for Deployment, Configuration Management, and Orchestration" href="playbooks.html" />
</head> </head>
<body> <body>
<div class="related"> <div class="related">
@ -37,7 +37,7 @@
<a href="api.html" title="API" <a href="api.html" title="API"
accesskey="N">next</a> |</li> accesskey="N">next</a> |</li>
<li class="right" > <li class="right" >
<a href="playbooks.html" title="Playbooks" <a href="playbooks.html" title="Playbooks: Ansible for Deployment, Configuration Management, and Orchestration"
accesskey="P">previous</a> |</li> accesskey="P">previous</a> |</li>
<li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li> <li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li>
</ul> </ul>
@ -55,7 +55,7 @@
<dl class="last docutils"> <dl class="last docutils">
<dt><a class="reference internal" href="modules.html"><em>Ansible Modules</em></a></dt> <dt><a class="reference internal" href="modules.html"><em>Ansible Modules</em></a></dt>
<dd>A list of available modules</dd> <dd>A list of available modules</dd>
<dt><a class="reference internal" href="playbooks.html"><em>Playbooks</em></a></dt> <dt><a class="reference internal" href="playbooks.html"><em>Playbooks: Ansible for Deployment, Configuration Management, and Orchestration</em></a></dt>
<dd>Alternative ways to use ansible</dd> <dd>Alternative ways to use ansible</dd>
</dl> </dl>
</div> </div>
@ -119,7 +119,7 @@ ansible webservers -m template -a "src=/srv/ntp.j2 dest=/etc/ntp.conf"</pre>
<h4>Previous topic</h4> <h4>Previous topic</h4>
<p class="topless"><a href="playbooks.html" <p class="topless"><a href="playbooks.html"
title="previous chapter">Playbooks</a></p> title="previous chapter">Playbooks: Ansible for Deployment, Configuration Management, and Orchestration</a></p>
<h4>Next topic</h4> <h4>Next topic</h4>
<p class="topless"><a href="api.html" <p class="topless"><a href="api.html"
title="next chapter">API</a></p> title="next chapter">API</a></p>
@ -155,7 +155,7 @@ ansible webservers -m template -a "src=/srv/ntp.j2 dest=/etc/ntp.conf"</pre>
<a href="api.html" title="API" <a href="api.html" title="API"
>next</a> |</li> >next</a> |</li>
<li class="right" > <li class="right" >
<a href="playbooks.html" title="Playbooks" <a href="playbooks.html" title="Playbooks: Ansible for Deployment, Configuration Management, and Orchestration"
>previous</a> |</li> >previous</a> |</li>
<li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li> <li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li>
</ul> </ul>

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@ -23,7 +23,7 @@
<script type="text/javascript" src="_static/underscore.js"></script> <script type="text/javascript" src="_static/underscore.js"></script>
<script type="text/javascript" src="_static/doctools.js"></script> <script type="text/javascript" src="_static/doctools.js"></script>
<link rel="top" title="Ansible v0.0.1 documentation" href="index.html" /> <link rel="top" title="Ansible v0.0.1 documentation" href="index.html" />
<link rel="next" title="Patterns" href="patterns.html" /> <link rel="next" title="The Inventory File, Patterns, and Groups" href="patterns.html" />
<link rel="prev" title="Ansible" href="index.html" /> <link rel="prev" title="Ansible" href="index.html" />
</head> </head>
<body> <body>
@ -34,7 +34,7 @@
<a href="genindex.html" title="General Index" <a href="genindex.html" title="General Index"
accesskey="I">index</a></li> accesskey="I">index</a></li>
<li class="right" > <li class="right" >
<a href="patterns.html" title="Patterns" <a href="patterns.html" title="The Inventory File, Patterns, and Groups"
accesskey="N">next</a> |</li> accesskey="N">next</a> |</li>
<li class="right" > <li class="right" >
<a href="index.html" title="Ansible" <a href="index.html" title="Ansible"
@ -58,7 +58,7 @@
<dd>Examples of basic commands</dd> <dd>Examples of basic commands</dd>
<dt><a class="reference internal" href="YAMLScripts.html"><em>YAML Scripts</em></a></dt> <dt><a class="reference internal" href="YAMLScripts.html"><em>YAML Scripts</em></a></dt>
<dd>Complete documentation of the YAML syntax <cite>ansible</cite> understands for playbooks.</dd> <dd>Complete documentation of the YAML syntax <cite>ansible</cite> understands for playbooks.</dd>
<dt><a class="reference internal" href="playbooks.html"><em>Playbooks</em></a></dt> <dt><a class="reference internal" href="playbooks.html"><em>Playbooks: Ansible for Deployment, Configuration Management, and Orchestration</em></a></dt>
<dd>Learning ansible&#8217;s configuration management language</dd> <dd>Learning ansible&#8217;s configuration management language</dd>
<dt><a class="reference internal" href="modules.html"><em>Ansible Modules</em></a></dt> <dt><a class="reference internal" href="modules.html"><em>Ansible Modules</em></a></dt>
<dd>Learn about modules that ship with ansible</dd> <dd>Learn about modules that ship with ansible</dd>
@ -167,7 +167,7 @@ of the more real-world examples.</p>
title="previous chapter">Ansible</a></p> title="previous chapter">Ansible</a></p>
<h4>Next topic</h4> <h4>Next topic</h4>
<p class="topless"><a href="patterns.html" <p class="topless"><a href="patterns.html"
title="next chapter">Patterns</a></p> title="next chapter">The Inventory File, Patterns, and Groups</a></p>
<h3>This Page</h3> <h3>This Page</h3>
<ul class="this-page-menu"> <ul class="this-page-menu">
<li><a href="_sources/gettingstarted.txt" <li><a href="_sources/gettingstarted.txt"
@ -197,7 +197,7 @@ of the more real-world examples.</p>
<a href="genindex.html" title="General Index" <a href="genindex.html" title="General Index"
>index</a></li> >index</a></li>
<li class="right" > <li class="right" >
<a href="patterns.html" title="Patterns" <a href="patterns.html" title="The Inventory File, Patterns, and Groups"
>next</a> |</li> >next</a> |</li>
<li class="right" > <li class="right" >
<a href="index.html" title="Ansible" <a href="index.html" title="Ansible"

32
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@ -83,6 +83,17 @@ to orchestrate systems in lots of diverse places.</p>
<p>Ansible is an GPLv3 licensed open source project, so see the contributions section for how to <p>Ansible is an GPLv3 licensed open source project, so see the contributions section for how to
get involved.</p> get involved.</p>
</div> </div>
<div class="section" id="communicate-and-get-involved">
<h2>Communicate and Get Involved<a class="headerlink" href="#communicate-and-get-involved" title="Permalink to this headline"></a></h2>
<ul class="simple">
<li>Join the <a class="reference external" href="http://groups.google.com/group/ansible-project">ansible-project mailing list</a> on Google Groups</li>
<li>Join <a class="reference external" href="irc://irc.freenode.net/#ansible">#ansible</a> on the <a class="reference external" href="http://freenode.net/">freenode IRC network</a></li>
<li>Visit the <a class="reference external" href="https://github.com/ansible/ansible">project page</a> on Github<ul>
<li>View the <a class="reference external" href="https://github.com/ansible/ansible/issues">issue tracker</a></li>
</ul>
</li>
</ul>
</div>
</div> </div>
<div class="section" id="contents"> <div class="section" id="contents">
<h1>Contents<a class="headerlink" href="#contents" title="Permalink to this headline"></a></h1> <h1>Contents<a class="headerlink" href="#contents" title="Permalink to this headline"></a></h1>
@ -99,17 +110,13 @@ get involved.</p>
<li class="toctree-l2"><a class="reference internal" href="gettingstarted.html#your-first-commands">Your first commands</a></li> <li class="toctree-l2"><a class="reference internal" href="gettingstarted.html#your-first-commands">Your first commands</a></li>
</ul> </ul>
</li> </li>
<li class="toctree-l1"><a class="reference internal" href="patterns.html">Patterns</a><ul> <li class="toctree-l1"><a class="reference internal" href="patterns.html">The Inventory File, Patterns, and Groups</a><ul>
<li class="toctree-l2"><a class="reference internal" href="patterns.html#targetting-all-systems">Targetting All Systems</a></li> <li class="toctree-l2"><a class="reference internal" href="patterns.html#inventory-file-format">Inventory File Format</a></li>
<li class="toctree-l2"><a class="reference internal" href="patterns.html#specific-hosts">Specific Hosts</a></li> <li class="toctree-l2"><a class="reference internal" href="patterns.html#selecting-targets">Selecting Targets</a></li>
<li class="toctree-l2"><a class="reference internal" href="patterns.html#groups">Groups</a></li>
<li class="toctree-l2"><a class="reference internal" href="patterns.html#wildcards">Wildcards</a></li>
<li class="toctree-l2"><a class="reference internal" href="patterns.html#mixing-things-up">Mixing Things Up</a></li>
</ul> </ul>
</li> </li>
<li class="toctree-l1"><a class="reference internal" href="modules.html">Ansible Modules</a><ul> <li class="toctree-l1"><a class="reference internal" href="modules.html">Ansible Modules</a><ul>
<li class="toctree-l2"><a class="reference internal" href="modules.html#about-modules">About Modules</a></li> <li class="toctree-l2"><a class="reference internal" href="modules.html#module-idempotence">Module Idempotence</a></li>
<li class="toctree-l2"><a class="reference internal" href="modules.html#idempotence">Idempotence</a></li>
<li class="toctree-l2"><a class="reference internal" href="modules.html#command">command</a></li> <li class="toctree-l2"><a class="reference internal" href="modules.html#command">command</a></li>
<li class="toctree-l2"><a class="reference internal" href="modules.html#copy">copy</a></li> <li class="toctree-l2"><a class="reference internal" href="modules.html#copy">copy</a></li>
<li class="toctree-l2"><a class="reference internal" href="modules.html#facter">facter</a></li> <li class="toctree-l2"><a class="reference internal" href="modules.html#facter">facter</a></li>
@ -121,20 +128,19 @@ get involved.</p>
<li class="toctree-l2"><a class="reference internal" href="modules.html#template">template</a></li> <li class="toctree-l2"><a class="reference internal" href="modules.html#template">template</a></li>
<li class="toctree-l2"><a class="reference internal" href="modules.html#user">user</a></li> <li class="toctree-l2"><a class="reference internal" href="modules.html#user">user</a></li>
<li class="toctree-l2"><a class="reference internal" href="modules.html#yum">yum</a></li> <li class="toctree-l2"><a class="reference internal" href="modules.html#yum">yum</a></li>
<li class="toctree-l2"><a class="reference internal" href="modules.html#writing-your-own-modules">WRITING YOUR OWN MODULES</a></li> <li class="toctree-l2"><a class="reference internal" href="modules.html#writing-your-own-modules">writing your own modules</a></li>
</ul> </ul>
</li> </li>
<li class="toctree-l1"><a class="reference internal" href="YAMLScripts.html">YAML Scripts</a><ul> <li class="toctree-l1"><a class="reference internal" href="YAMLScripts.html">YAML Scripts</a><ul>
<li class="toctree-l2"><a class="reference internal" href="YAMLScripts.html#yaml-basics">YAML Basics</a></li> <li class="toctree-l2"><a class="reference internal" href="YAMLScripts.html#yaml-basics">YAML Basics</a></li>
</ul> </ul>
</li> </li>
<li class="toctree-l1"><a class="reference internal" href="playbooks.html">Playbooks</a><ul> <li class="toctree-l1"><a class="reference internal" href="playbooks.html">Playbooks: Ansible for Deployment, Configuration Management, and Orchestration</a><ul>
<li class="toctree-l2"><a class="reference internal" href="playbooks.html#playbook-example">Playbook Example</a></li> <li class="toctree-l2"><a class="reference internal" href="playbooks.html#playbook-example">Playbook Example</a></li>
<li class="toctree-l2"><a class="reference internal" href="playbooks.html#hosts-line">Hosts line</a></li> <li class="toctree-l2"><a class="reference internal" href="playbooks.html#hosts-line">Hosts line</a></li>
<li class="toctree-l2"><a class="reference internal" href="playbooks.html#vars-section">Vars section</a></li> <li class="toctree-l2"><a class="reference internal" href="playbooks.html#vars-section">Vars section</a></li>
<li class="toctree-l2"><a class="reference internal" href="playbooks.html#tasks-list">Tasks list</a></li> <li class="toctree-l2"><a class="reference internal" href="playbooks.html#tasks-list">Tasks list</a></li>
<li class="toctree-l2"><a class="reference internal" href="playbooks.html#task-name-and-comment">Task name and comment</a></li> <li class="toctree-l2"><a class="reference internal" href="playbooks.html#task-name-and-action">Task name and action</a></li>
<li class="toctree-l2"><a class="reference internal" href="playbooks.html#task-action">Task action</a></li>
<li class="toctree-l2"><a class="reference internal" href="playbooks.html#notify-statements">Notify statements</a></li> <li class="toctree-l2"><a class="reference internal" href="playbooks.html#notify-statements">Notify statements</a></li>
<li class="toctree-l2"><a class="reference internal" href="playbooks.html#handlers">Handlers</a></li> <li class="toctree-l2"><a class="reference internal" href="playbooks.html#handlers">Handlers</a></li>
<li class="toctree-l2"><a class="reference internal" href="playbooks.html#includes">Includes</a></li> <li class="toctree-l2"><a class="reference internal" href="playbooks.html#includes">Includes</a></li>
@ -150,7 +156,6 @@ get involved.</p>
</ul> </ul>
</li> </li>
<li class="toctree-l1"><a class="reference internal" href="api.html">API</a></li> <li class="toctree-l1"><a class="reference internal" href="api.html">API</a></li>
<li class="toctree-l1"><a class="reference internal" href="communicate.html">Communicate and Get Involved</a></li>
<li class="toctree-l1"><a class="reference internal" href="man.html">Man Pages</a><ul> <li class="toctree-l1"><a class="reference internal" href="man.html">Man Pages</a><ul>
<li class="toctree-l2"><a class="reference internal" href="man.html#ansible-1">ansible(1)</a></li> <li class="toctree-l2"><a class="reference internal" href="man.html#ansible-1">ansible(1)</a></li>
</ul> </ul>
@ -170,6 +175,7 @@ get involved.</p>
<li><a class="reference internal" href="#">Ansible</a><ul> <li><a class="reference internal" href="#">Ansible</a><ul>
<li><a class="reference internal" href="#design-goals">Design Goals</a></li> <li><a class="reference internal" href="#design-goals">Design Goals</a></li>
<li><a class="reference internal" href="#about-the-author">About the Author</a></li> <li><a class="reference internal" href="#about-the-author">About the Author</a></li>
<li><a class="reference internal" href="#communicate-and-get-involved">Communicate and Get Involved</a></li>
</ul> </ul>
</li> </li>
<li><a class="reference internal" href="#contents">Contents</a><ul> <li><a class="reference internal" href="#contents">Contents</a><ul>

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@ -23,7 +23,7 @@
<script type="text/javascript" src="_static/underscore.js"></script> <script type="text/javascript" src="_static/underscore.js"></script>
<script type="text/javascript" src="_static/doctools.js"></script> <script type="text/javascript" src="_static/doctools.js"></script>
<link rel="top" title="Ansible v0.0.1 documentation" href="index.html" /> <link rel="top" title="Ansible v0.0.1 documentation" href="index.html" />
<link rel="prev" title="Communicate and Get Involved" href="communicate.html" /> <link rel="prev" title="API" href="api.html" />
</head> </head>
<body> <body>
<div class="related"> <div class="related">
@ -33,7 +33,7 @@
<a href="genindex.html" title="General Index" <a href="genindex.html" title="General Index"
accesskey="I">index</a></li> accesskey="I">index</a></li>
<li class="right" > <li class="right" >
<a href="communicate.html" title="Communicate and Get Involved" <a href="api.html" title="API"
accesskey="P">previous</a> |</li> accesskey="P">previous</a> |</li>
<li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li> <li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li>
</ul> </ul>
@ -70,8 +70,8 @@
</ul> </ul>
<h4>Previous topic</h4> <h4>Previous topic</h4>
<p class="topless"><a href="communicate.html" <p class="topless"><a href="api.html"
title="previous chapter">Communicate and Get Involved</a></p> title="previous chapter">API</a></p>
<h3>This Page</h3> <h3>This Page</h3>
<ul class="this-page-menu"> <ul class="this-page-menu">
<li><a href="_sources/man.txt" <li><a href="_sources/man.txt"
@ -101,7 +101,7 @@
<a href="genindex.html" title="General Index" <a href="genindex.html" title="General Index"
>index</a></li> >index</a></li>
<li class="right" > <li class="right" >
<a href="communicate.html" title="Communicate and Get Involved" <a href="api.html" title="API"
>previous</a> |</li> >previous</a> |</li>
<li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li> <li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li>
</ul> </ul>

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@ -1,6 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>ansible-modules</title><link rel="stylesheet" href="./docbook-xsl.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /></head><body><div xml:lang="en" class="refentry" title="ansible-modules" lang="en"><a id="id326412"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ansible-modules — stock modules shipped with ansible</p></div><div class="refsect1" title="DESCRIPTION"><a id="_description"></a><h2>DESCRIPTION</h2><p>Ansible ships with a number of modules that can be executed directly on remote hosts or through <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>ansible-modules</title><link rel="stylesheet" href="./docbook-xsl.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /></head><body><div xml:lang="en" class="refentry" title="ansible-modules" lang="en"><a id="id372014"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ansible-modules — stock modules shipped with ansible</p></div><div class="refsect1" title="DESCRIPTION"><a id="_description"></a><h2>DESCRIPTION</h2><p>Ansible ships with a number of modules that can be executed directly on remote hosts or through
ansible playbooks.</p></div><div class="refsect1" title="IDEMPOTENCE"><a id="_idempotence"></a><h2>IDEMPOTENCE</h2><p>Most modules other than command are idempotent, meaning they will seek to avoid changes ansible playbooks.</p></div><div class="refsect1" title="IDEMPOTENCE"><a id="_idempotence"></a><h2>IDEMPOTENCE</h2><p>Most modules other than command are idempotent, meaning they will seek to avoid changes
unless a change needs to be made. When using ansible playbooks, these modules can unless a change needs to be made. When using ansible playbooks, these modules can
trigger change events, as described in <span class="strong"><strong>ansible-playbooks</strong></span>(5).</p><p>Unless otherwise noted, all modules support change hooks.</p></div><div class="refsect1" title="command"><a id="_command"></a><h2>command</h2><p>The command module takes the command name followed by a list of arguments, space delimited. trigger change events, as described in <span class="strong"><strong>ansible-playbooks</strong></span>(5).</p><p>Unless otherwise noted, all modules support change hooks.</p></div><div class="refsect1" title="command"><a id="_command"></a><h2>command</h2><p>The command module takes the command name followed by a list of arguments, space delimited.

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@ -1,6 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>ansible-modules</title><link rel="stylesheet" href="./docbook-xsl.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /></head><body><div xml:lang="en" class="refentry" title="ansible-modules" lang="en"><a id="id532031"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ansible-playbook — format and function of an ansible playbook file</p></div><div class="refsect1" title="DESCRIPTION"><a id="_description"></a><h2>DESCRIPTION</h2><p>Ansible ships with <span class="emphasis"><em>ansible-playbook</em></span>, a tool for running playbooks. <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>ansible-modules</title><link rel="stylesheet" href="./docbook-xsl.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /></head><body><div xml:lang="en" class="refentry" title="ansible-modules" lang="en"><a id="id447346"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ansible-playbook — format and function of an ansible playbook file</p></div><div class="refsect1" title="DESCRIPTION"><a id="_description"></a><h2>DESCRIPTION</h2><p>Ansible ships with <span class="emphasis"><em>ansible-playbook</em></span>, a tool for running playbooks.
Playbooks can represent frequent tasks, desired system configurations, Playbooks can represent frequent tasks, desired system configurations,
or deployment processes.</p></div><div class="refsect1" title="FORMAT"><a id="_format"></a><h2>FORMAT</h2><p>Playbooks are written in YAML.</p></div><div class="refsect1" title="EXAMPLE"><a id="_example"></a><h2>EXAMPLE</h2><p>See:</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"> or deployment processes.</p></div><div class="refsect1" title="FORMAT"><a id="_format"></a><h2>FORMAT</h2><p>Playbooks are written in YAML.</p></div><div class="refsect1" title="EXAMPLE"><a id="_example"></a><h2>EXAMPLE</h2><p>See:</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<a class="ulink" href="https://github.com/mpdehaan/ansible/blob/master/examples/playbook.yml" target="_top">https://github.com/mpdehaan/ansible/blob/master/examples/playbook.yml</a> <a class="ulink" href="https://github.com/mpdehaan/ansible/blob/master/examples/playbook.yml" target="_top">https://github.com/mpdehaan/ansible/blob/master/examples/playbook.yml</a>

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@ -1,6 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>ansible</title><link rel="stylesheet" href="./docbook-xsl.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /></head><body><div xml:lang="en" class="refentry" title="ansible" lang="en"><a id="id320915"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ansible — run a command somewhere else</p></div><div class="refsynopsisdiv" title="Synopsis"><a id="_synopsis"></a><h2>Synopsis</h2><p>ansible &lt;host-pattern&gt; [-f forks] [-m module_name] [-a args]</p></div><div class="refsect1" title="DESCRIPTION"><a id="_description"></a><h2>DESCRIPTION</h2><p><span class="strong"><strong>Ansible</strong></span> is an extra-simple tool/framework/API for doing 'remote things' over <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>ansible</title><link rel="stylesheet" href="./docbook-xsl.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /></head><body><div xml:lang="en" class="refentry" title="ansible" lang="en"><a id="id490114"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ansible — run a command somewhere else</p></div><div class="refsynopsisdiv" title="Synopsis"><a id="_synopsis"></a><h2>Synopsis</h2><p>ansible &lt;host-pattern&gt; [-f forks] [-m module_name] [-a args]</p></div><div class="refsect1" title="DESCRIPTION"><a id="_description"></a><h2>DESCRIPTION</h2><p><span class="strong"><strong>Ansible</strong></span> is an extra-simple tool/framework/API for doing 'remote things' over
SSH.</p></div><div class="refsect1" title="ARGUMENTS"><a id="_arguments"></a><h2>ARGUMENTS</h2><div class="variablelist"><dl><dt><span class="term"> SSH.</p></div><div class="refsect1" title="ARGUMENTS"><a id="_arguments"></a><h2>ARGUMENTS</h2><div class="variablelist"><dl><dt><span class="term">
<span class="strong"><strong>host-pattern</strong></span> <span class="strong"><strong>host-pattern</strong></span>
</span></dt><dd> </span></dt><dd>

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@ -24,7 +24,7 @@
<script type="text/javascript" src="_static/doctools.js"></script> <script type="text/javascript" src="_static/doctools.js"></script>
<link rel="top" title="Ansible v0.0.1 documentation" href="index.html" /> <link rel="top" title="Ansible v0.0.1 documentation" href="index.html" />
<link rel="next" title="YAML Scripts" href="YAMLScripts.html" /> <link rel="next" title="YAML Scripts" href="YAMLScripts.html" />
<link rel="prev" title="Patterns" href="patterns.html" /> <link rel="prev" title="The Inventory File, Patterns, and Groups" href="patterns.html" />
</head> </head>
<body> <body>
<div class="related"> <div class="related">
@ -37,7 +37,7 @@
<a href="YAMLScripts.html" title="YAML Scripts" <a href="YAMLScripts.html" title="YAML Scripts"
accesskey="N">next</a> |</li> accesskey="N">next</a> |</li>
<li class="right" > <li class="right" >
<a href="patterns.html" title="Patterns" <a href="patterns.html" title="The Inventory File, Patterns, and Groups"
accesskey="P">previous</a> |</li> accesskey="P">previous</a> |</li>
<li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li> <li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li>
</ul> </ul>
@ -50,24 +50,21 @@
<div class="section" id="ansible-modules"> <div class="section" id="ansible-modules">
<h1>Ansible Modules<a class="headerlink" href="#ansible-modules" title="Permalink to this headline"></a></h1> <h1>Ansible Modules<a class="headerlink" href="#ansible-modules" title="Permalink to this headline"></a></h1>
<p>Ansible ships with a number of modules that can be executed directly on remote hosts or through
ansible playbooks.</p>
<div class="admonition-see-also admonition seealso"> <div class="admonition-see-also admonition seealso">
<p class="first admonition-title">See also</p> <p class="first admonition-title">See also</p>
<dl class="last docutils"> <dl class="last docutils">
<dt><a class="reference internal" href="examples.html"><em>Examples</em></a></dt> <dt><a class="reference internal" href="examples.html"><em>Examples</em></a></dt>
<dd>Examples of using modules in /usr/bin/ansible</dd> <dd>Examples of using modules in /usr/bin/ansible</dd>
<dt><a class="reference internal" href="playbooks.html"><em>Playbooks</em></a></dt> <dt><a class="reference internal" href="playbooks.html"><em>Playbooks: Ansible for Deployment, Configuration Management, and Orchestration</em></a></dt>
<dd>Examples of using modules with /usr/bin/ansible-playbook</dd> <dd>Examples of using modules with /usr/bin/ansible-playbook</dd>
<dt><a class="reference internal" href="api.html"><em>API</em></a></dt> <dt><a class="reference internal" href="api.html"><em>API</em></a></dt>
<dd>Examples of using modules with the Python API</dd> <dd>Examples of using modules with the Python API</dd>
</dl> </dl>
</div> </div>
<div class="section" id="about-modules"> <div class="section" id="module-idempotence">
<h2>About Modules<a class="headerlink" href="#about-modules" title="Permalink to this headline"></a></h2> <h2>Module Idempotence<a class="headerlink" href="#module-idempotence" title="Permalink to this headline"></a></h2>
<p>Ansible ships with a number of modules that can be executed directly on remote hosts or through
ansible playbooks.</p>
</div>
<div class="section" id="idempotence">
<h2>Idempotence<a class="headerlink" href="#idempotence" title="Permalink to this headline"></a></h2>
<p>Most modules other than command are idempotent, meaning they will seek to avoid changes <p>Most modules other than command are idempotent, meaning they will seek to avoid changes
unless a change needs to be made. When using ansible playbooks, these modules can unless a change needs to be made. When using ansible playbooks, these modules can
trigger change events. Unless otherwise noted, all modules support change hooks.</p> trigger change events. Unless otherwise noted, all modules support change hooks.</p>
@ -172,7 +169,7 @@ remote user who does not have permissions on /etc/ansible.</p>
<p>This module is in plan.</p> <p>This module is in plan.</p>
</div> </div>
<div class="section" id="writing-your-own-modules"> <div class="section" id="writing-your-own-modules">
<h2>WRITING YOUR OWN MODULES<a class="headerlink" href="#writing-your-own-modules" title="Permalink to this headline"></a></h2> <h2>writing your own modules<a class="headerlink" href="#writing-your-own-modules" title="Permalink to this headline"></a></h2>
<p>To write your own modules, simply follow the convention of those already available in <p>To write your own modules, simply follow the convention of those already available in
/usr/share/ansible. Modules must return JSON but can be written in any language. /usr/share/ansible. Modules must return JSON but can be written in any language.
Modules should return hashes, but hashes can be nested. Modules should return hashes, but hashes can be nested.
@ -192,8 +189,7 @@ describing the nature of the failure. Other values are up to the module.</p>
<h3><a href="index.html">Table Of Contents</a></h3> <h3><a href="index.html">Table Of Contents</a></h3>
<ul> <ul>
<li><a class="reference internal" href="#">Ansible Modules</a><ul> <li><a class="reference internal" href="#">Ansible Modules</a><ul>
<li><a class="reference internal" href="#about-modules">About Modules</a></li> <li><a class="reference internal" href="#module-idempotence">Module Idempotence</a></li>
<li><a class="reference internal" href="#idempotence">Idempotence</a></li>
<li><a class="reference internal" href="#command">command</a></li> <li><a class="reference internal" href="#command">command</a></li>
<li><a class="reference internal" href="#copy">copy</a></li> <li><a class="reference internal" href="#copy">copy</a></li>
<li><a class="reference internal" href="#facter">facter</a></li> <li><a class="reference internal" href="#facter">facter</a></li>
@ -205,14 +201,14 @@ describing the nature of the failure. Other values are up to the module.</p>
<li><a class="reference internal" href="#template">template</a></li> <li><a class="reference internal" href="#template">template</a></li>
<li><a class="reference internal" href="#user">user</a></li> <li><a class="reference internal" href="#user">user</a></li>
<li><a class="reference internal" href="#yum">yum</a></li> <li><a class="reference internal" href="#yum">yum</a></li>
<li><a class="reference internal" href="#writing-your-own-modules">WRITING YOUR OWN MODULES</a></li> <li><a class="reference internal" href="#writing-your-own-modules">writing your own modules</a></li>
</ul> </ul>
</li> </li>
</ul> </ul>
<h4>Previous topic</h4> <h4>Previous topic</h4>
<p class="topless"><a href="patterns.html" <p class="topless"><a href="patterns.html"
title="previous chapter">Patterns</a></p> title="previous chapter">The Inventory File, Patterns, and Groups</a></p>
<h4>Next topic</h4> <h4>Next topic</h4>
<p class="topless"><a href="YAMLScripts.html" <p class="topless"><a href="YAMLScripts.html"
title="next chapter">YAML Scripts</a></p> title="next chapter">YAML Scripts</a></p>
@ -248,7 +244,7 @@ describing the nature of the failure. Other values are up to the module.</p>
<a href="YAMLScripts.html" title="YAML Scripts" <a href="YAMLScripts.html" title="YAML Scripts"
>next</a> |</li> >next</a> |</li>
<li class="right" > <li class="right" >
<a href="patterns.html" title="Patterns" <a href="patterns.html" title="The Inventory File, Patterns, and Groups"
>previous</a> |</li> >previous</a> |</li>
<li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li> <li><a href="index.html">Ansible v0.0.1 documentation</a> &raquo;</li>
</ul> </ul>

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@ -7,7 +7,7 @@
<head> <head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Patterns &mdash; Ansible v0.0.1 documentation</title> <title>The Inventory File, Patterns, and Groups &mdash; Ansible v0.0.1 documentation</title>
<link rel="stylesheet" href="_static/default.css" type="text/css" /> <link rel="stylesheet" href="_static/default.css" type="text/css" />
<link rel="stylesheet" href="_static/pygments.css" type="text/css" /> <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
<script type="text/javascript"> <script type="text/javascript">
@ -48,18 +48,20 @@
<div class="bodywrapper"> <div class="bodywrapper">
<div class="body"> <div class="body">
<div class="section" id="patterns"> <div class="section" id="the-inventory-file-patterns-and-groups">
<h1>Patterns<a class="headerlink" href="#patterns" title="Permalink to this headline"></a></h1> <h1>The Inventory File, Patterns, and Groups<a class="headerlink" href="#the-inventory-file-patterns-and-groups" title="Permalink to this headline"></a></h1>
<p>How to select hosts you wish to manage</p> <p>How to select hosts you wish to manage</p>
<div class="admonition-see-also admonition seealso"> <div class="admonition-see-also admonition seealso">
<p class="first admonition-title">See also</p> <p class="first admonition-title">See also</p>
<dl class="last docutils"> <dl class="last docutils">
<dt><a class="reference internal" href="examples.html"><em>Examples</em></a></dt> <dt><a class="reference internal" href="examples.html"><em>Examples</em></a></dt>
<dd>Examples of basic commands</dd> <dd>Examples of basic commands</dd>
<dt><a class="reference internal" href="playbooks.html"><em>Playbooks</em></a></dt> <dt><a class="reference internal" href="playbooks.html"><em>Playbooks: Ansible for Deployment, Configuration Management, and Orchestration</em></a></dt>
<dd>Learning ansible&#8217;s configuration management language</dd> <dd>Learning ansible&#8217;s configuration management language</dd>
</dl> </dl>
</div> </div>
<div class="section" id="inventory-file-format">
<h2>Inventory File Format<a class="headerlink" href="#inventory-file-format" title="Permalink to this headline"></a></h2>
<p>Ansible works against multiple systems in your infrastructure at the <p>Ansible works against multiple systems in your infrastructure at the
same time. It does this by selecting portions of systems listed in Ansible&#8217;s inventory file, same time. It does this by selecting portions of systems listed in Ansible&#8217;s inventory file,
which defaults to /etc/ansible/hosts, and looks like this:</p> which defaults to /etc/ansible/hosts, and looks like this:</p>
@ -75,38 +77,30 @@ which defaults to /etc/ansible/hosts, and looks like this:</p>
<span class="n">three</span><span class="o">.</span><span class="n">example</span><span class="o">.</span><span class="n">com</span> <span class="n">three</span><span class="o">.</span><span class="n">example</span><span class="o">.</span><span class="n">com</span>
</pre></div> </pre></div>
</div> </div>
<div class="section" id="targetting-all-systems">
<h2>Targetting All Systems<a class="headerlink" href="#targetting-all-systems" title="Permalink to this headline"></a></h2>
<p>The pattern &#8216;all&#8217; or &#8216;*&#8217; targets all systems in the inventory file.</p>
</div> </div>
<div class="section" id="specific-hosts"> <div class="section" id="selecting-targets">
<h2>Specific Hosts<a class="headerlink" href="#specific-hosts" title="Permalink to this headline"></a></h2> <h2>Selecting Targets<a class="headerlink" href="#selecting-targets" title="Permalink to this headline"></a></h2>
<p>It is possible to address specific hosts:</p> <p>These patterns target all hosts in the inventory file:</p>
<blockquote> <div class="highlight-python"><pre>all
<div>one.example.com *</pre>
one.example.com:two.example.com</div></blockquote>
</div> </div>
<div class="section" id="groups"> <p>It is also possible to address specific hosts:</p>
<h2>Groups<a class="headerlink" href="#groups" title="Permalink to this headline"></a></h2> <div class="highlight-python"><pre>one.example.com
<p>The following patterns address one or more groups:</p> one.example.com:two.example.com</pre>
<blockquote> </div>
<div>webservers <p>The following patterns address one or more groups, which are denoted with the bracket
webservers:dbservers</div></blockquote> headers in the inventory file:</p>
<p>There is also a magic group &#8216;ungrouped&#8217; which selects systems not in a group.</p> <div class="highlight-python"><pre>webservers
webservers:dbservers</pre>
</div> </div>
<div class="section" id="wildcards">
<h2>Wildcards<a class="headerlink" href="#wildcards" title="Permalink to this headline"></a></h2>
<p>Individual hosts, but not groups, can also be referenced using wildcards:</p> <p>Individual hosts, but not groups, can also be referenced using wildcards:</p>
<blockquote> <blockquote>
<div><a href="#id1"><span class="problematic" id="id2">*</span></a>.example.com <div><a href="#id1"><span class="problematic" id="id2">*</span></a>.example.com
<a href="#id3"><span class="problematic" id="id4">*</span></a>.com</div></blockquote> <a href="#id3"><span class="problematic" id="id4">*</span></a>.com</div></blockquote>
<p>It&#8217;s also ok to mix wildcard patterns and groups at the same time:</p>
<div class="highlight-python"><pre>one*.com:dbservers</pre>
</div> </div>
<div class="section" id="mixing-things-up"> <p>NOTE: It is not possible to target a host not in the inventory file.</p>
<h2>Mixing Things Up<a class="headerlink" href="#mixing-things-up" title="Permalink to this headline"></a></h2>
<p>Specific hosts, wildcards, and groups can all be mixed in the same pattern</p>
<blockquote>
<div>one*.com:dbservers</div></blockquote>
<p>It is not possible to target a host not in the inventory file.</p>
</div> </div>
</div> </div>
@ -118,12 +112,9 @@ webservers:dbservers</div></blockquote>
<div class="sphinxsidebarwrapper"> <div class="sphinxsidebarwrapper">
<h3><a href="index.html">Table Of Contents</a></h3> <h3><a href="index.html">Table Of Contents</a></h3>
<ul> <ul>
<li><a class="reference internal" href="#">Patterns</a><ul> <li><a class="reference internal" href="#">The Inventory File, Patterns, and Groups</a><ul>
<li><a class="reference internal" href="#targetting-all-systems">Targetting All Systems</a></li> <li><a class="reference internal" href="#inventory-file-format">Inventory File Format</a></li>
<li><a class="reference internal" href="#specific-hosts">Specific Hosts</a></li> <li><a class="reference internal" href="#selecting-targets">Selecting Targets</a></li>
<li><a class="reference internal" href="#groups">Groups</a></li>
<li><a class="reference internal" href="#wildcards">Wildcards</a></li>
<li><a class="reference internal" href="#mixing-things-up">Mixing Things Up</a></li>
</ul> </ul>
</li> </li>
</ul> </ul>

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@ -7,7 +7,7 @@
<head> <head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Playbooks &mdash; Ansible v0.0.1 documentation</title> <title>Playbooks: Ansible for Deployment, Configuration Management, and Orchestration &mdash; Ansible v0.0.1 documentation</title>
<link rel="stylesheet" href="_static/default.css" type="text/css" /> <link rel="stylesheet" href="_static/default.css" type="text/css" />
<link rel="stylesheet" href="_static/pygments.css" type="text/css" /> <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
<script type="text/javascript"> <script type="text/javascript">
@ -48,8 +48,8 @@
<div class="bodywrapper"> <div class="bodywrapper">
<div class="body"> <div class="body">
<div class="section" id="playbooks"> <div class="section" id="playbooks-ansible-for-deployment-configuration-management-and-orchestration">
<h1>Playbooks<a class="headerlink" href="#playbooks" title="Permalink to this headline"></a></h1> <h1>Playbooks: Ansible for Deployment, Configuration Management, and Orchestration<a class="headerlink" href="#playbooks-ansible-for-deployment-configuration-management-and-orchestration" title="Permalink to this headline"></a></h1>
<div class="admonition-see-also admonition seealso"> <div class="admonition-see-also admonition seealso">
<p class="first admonition-title">See also</p> <p class="first admonition-title">See also</p>
<dl class="last docutils"> <dl class="last docutils">
@ -57,78 +57,66 @@
<dd>Learn about YAML syntax</dd> <dd>Learn about YAML syntax</dd>
<dt><a class="reference internal" href="modules.html"><em>Ansible Modules</em></a></dt> <dt><a class="reference internal" href="modules.html"><em>Ansible Modules</em></a></dt>
<dd>Learn about available modules and writing your own</dd> <dd>Learn about available modules and writing your own</dd>
<dt><a class="reference internal" href="patterns.html"><em>Patterns</em></a></dt> <dt><a class="reference internal" href="patterns.html"><em>The Inventory File, Patterns, and Groups</em></a></dt>
<dd>Learn about how to select hosts</dd> <dd>Learn about how to select hosts</dd>
</dl> </dl>
</div> </div>
<p>Playbooks are a completely different way to use ansible and are particularly awesome.</p> <p>Playbooks are a completely different way to use ansible and are particularly awesome. They are the basis for a really simple configuration management and deployment system, unlike any that already exist, and one that is very well suited to deploying complex multi-machine applications. While you might run the main ansible program for ad-hoc tasks, playbooks are more likely to be kept in source control and used to push out your configuration or assure the configurations of your remote systems are in spec.</p>
<p>They are the basis for a really simple configuration management and deployment system, unlike any that already exist, and one that is very well suited to deploying complex multi-machine applications. While you might run the main ansible program for ad-hoc tasks, playbooks are more likely to be kept in source control and used to push out your configuration or assure the configurations of your remote systems are in spec.</p>
<div class="section" id="playbook-example"> <div class="section" id="playbook-example">
<h2>Playbook Example<a class="headerlink" href="#playbook-example" title="Permalink to this headline"></a></h2> <h2>Playbook Example<a class="headerlink" href="#playbook-example" title="Permalink to this headline"></a></h2>
<p>Playbooks are expressed in YAML format and have a minimum of syntax. Each playbook is composed <p>Playbooks are expressed in YAML format and have a minimum of syntax. Each playbook is composed
of one or more patterns in a list. By composing a playbook of multiple patterns, it is possible of one or more &#8216;plays&#8217; in a list. By composing a playbook of multiple &#8216;plays&#8217;, it is possible
to orchestrate multi-machine deployments, running certain steps on all machines in to orchestrate multi-machine deployments, running certain steps on all machines in
the webservers group, then certain steps on the database server group, then more commands the webservers group, then certain steps on the database server group, then more commands
back on the webservers group, etc:</p> back on the webservers group, etc:</p>
<div class="highlight-python"><pre>--- <div class="highlight-python"><pre>---
- hosts: all</pre> - hosts: webservers
vars:
http_port: 80
max_clients: 200
user: root
tasks:
- include: base.yml somevar=3 othervar=4
- name: write the apache config file
action: template src=/srv/httpd.j2 dest=/etc/httpd.conf
notify:
- restart apache
- name: ensure apache is running
action: service name=httpd state=started
handlers:
- include: handlers.yml</pre>
</div> </div>
<blockquote>
<div><dl class="docutils">
<dt>vars:</dt>
<dd>http_port: 80
max_clients: 200</dd>
</dl>
<p>user: root
tasks:
- include: base.yml somevar=3 othervar=4
- name: write the apache config file</p>
<blockquote>
<div>action: template src=/srv/httpd.j2 dest=/etc/httpd.conf
notify:
- restart apache</div></blockquote>
<ul class="simple">
<li>name: ensure apache is running
action: service name=httpd state=started</li>
</ul>
<dl class="docutils">
<dt>handlers:</dt>
<dd><ul class="first last simple">
<li>include: handlers.yml</li>
</ul>
</dd>
</dl>
</div></blockquote>
</div> </div>
<div class="section" id="hosts-line"> <div class="section" id="hosts-line">
<h2>Hosts line<a class="headerlink" href="#hosts-line" title="Permalink to this headline"></a></h2> <h2>Hosts line<a class="headerlink" href="#hosts-line" title="Permalink to this headline"></a></h2>
<p>The hosts line is alist of one or more groups or host patterns, seperated by colons.</p> <p>The hosts line is alist of one or more groups or host patterns, seperated by colons, as
<blockquote> described in the &#8216;patterns&#8217; documentation.</p>
<div>webservers:dbservers:<a href="#id1"><span class="problematic" id="id2">*</span></a>.foo.example.com</div></blockquote>
</div> </div>
<div class="section" id="vars-section"> <div class="section" id="vars-section">
<h2>Vars section<a class="headerlink" href="#vars-section" title="Permalink to this headline"></a></h2> <h2>Vars section<a class="headerlink" href="#vars-section" title="Permalink to this headline"></a></h2>
<p>A list of variables that can be used in the &#8216;action&#8217; lines of the template, or in <p>A list of variables that can be used in the templates, action lines, or included files.
included templates. Variables are deferenced like this:</p> Variables are deferenced using <tt class="docutils literal"><span class="pre">jinja2</span></tt> syntax like this:</p>
<div class="highlight-python"><pre>{{ varname }}</pre> <div class="highlight-python"><pre>{{ varname }}</pre>
</div> </div>
<p>These variables will be pushed down to the managed systems for use in templating operations.</p> <p>These variables will be pushed down to the managed systems for use in templating operations, where
the way to dereference them in templates is exactly the same.</p>
<p>Further, if there are discovered variables about the system (say, if facter or ohai were <p>Further, if there are discovered variables about the system (say, if facter or ohai were
installed) these variables bubble up back into the playbook, and can be used on each installed) these variables bubble up back into the playbook, and can be used on each
system just like explicitly set variables. Facter variables are prefixed with &#8216;facter&#8217; system just like explicitly set variables. Facter variables are prefixed with &#8216;<a href="#id1"><span class="problematic" id="id2">facter_</span></a>&#8216;
and Ohai variables are prefixed with &#8216;ohai&#8217;.</p> and Ohai variables are prefixed with &#8216;<a href="#id3"><span class="problematic" id="id4">ohai_</span></a>&#8216;.</p>
</div> </div>
<div class="section" id="tasks-list"> <div class="section" id="tasks-list">
<h2>Tasks list<a class="headerlink" href="#tasks-list" title="Permalink to this headline"></a></h2> <h2>Tasks list<a class="headerlink" href="#tasks-list" title="Permalink to this headline"></a></h2>
<p>Tasks are executed in order, one at a time, against all machines matched by the host <p>Each play contains a list of tasks. Tasks are executed in order, one at a time, against
pattern, before moving on to the next task. Failed tasks are taken out of the rotation.</p> all machines matched by the play&#8217;s host pattern, before moving on to the next task.
Hosts with failed tasks are taken out of the rotation for the entire playbook. If things fail,
correct the problem and rerun. Modules other than command are idempotent, meaning if you
run them again, they will make the changes they are told to make to bring the system to
the desired state.</p>
</div> </div>
<div class="section" id="task-name-and-comment"> <div class="section" id="task-name-and-action">
<h2>Task name and comment<a class="headerlink" href="#task-name-and-comment" title="Permalink to this headline"></a></h2> <h2>Task name and action<a class="headerlink" href="#task-name-and-action" title="Permalink to this headline"></a></h2>
<p>Each task has a name (required) and optional comment. This is for informational purposes only</p> <p>Every task must have a name, which is included in the output from running the playbook.</p>
</div>
<div class="section" id="task-action">
<h2>Task action<a class="headerlink" href="#task-action" title="Permalink to this headline"></a></h2>
<p>The action line is the name of an ansible module followed by parameters. Usually these <p>The action line is the name of an ansible module followed by parameters. Usually these
are expressed in key=value form, except for the command module, which looks just like a Linux/Unix are expressed in key=value form, except for the command module, which looks just like a Linux/Unix
command line. See the module documentation for more info.</p> command line. See the module documentation for more info.</p>
@ -172,13 +160,12 @@ Variables passed in can be deferenced like this:</p>
<div class="sphinxsidebarwrapper"> <div class="sphinxsidebarwrapper">
<h3><a href="index.html">Table Of Contents</a></h3> <h3><a href="index.html">Table Of Contents</a></h3>
<ul> <ul>
<li><a class="reference internal" href="#">Playbooks</a><ul> <li><a class="reference internal" href="#">Playbooks: Ansible for Deployment, Configuration Management, and Orchestration</a><ul>
<li><a class="reference internal" href="#playbook-example">Playbook Example</a></li> <li><a class="reference internal" href="#playbook-example">Playbook Example</a></li>
<li><a class="reference internal" href="#hosts-line">Hosts line</a></li> <li><a class="reference internal" href="#hosts-line">Hosts line</a></li>
<li><a class="reference internal" href="#vars-section">Vars section</a></li> <li><a class="reference internal" href="#vars-section">Vars section</a></li>
<li><a class="reference internal" href="#tasks-list">Tasks list</a></li> <li><a class="reference internal" href="#tasks-list">Tasks list</a></li>
<li><a class="reference internal" href="#task-name-and-comment">Task name and comment</a></li> <li><a class="reference internal" href="#task-name-and-action">Task name and action</a></li>
<li><a class="reference internal" href="#task-action">Task action</a></li>
<li><a class="reference internal" href="#notify-statements">Notify statements</a></li> <li><a class="reference internal" href="#notify-statements">Notify statements</a></li>
<li><a class="reference internal" href="#handlers">Handlers</a></li> <li><a class="reference internal" href="#handlers">Handlers</a></li>
<li><a class="reference internal" href="#includes">Includes</a></li> <li><a class="reference internal" href="#includes">Includes</a></li>

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@ -1,9 +0,0 @@
Communicate and Get Involved
===========================
* Join the `ansible-project mailing list <http://groups.google.com/group/ansible-project>`_ on Google Groups
* Join `#ansible <irc://irc.freenode.net/#ansible>`_ on the `freenode IRC network <http://freenode.net/>`_
* Visit the `project page <https://github.com/ansible/ansible>`_ on Github
- View the `issue tracker <https://github.com/ansible/ansible/issues>`_

32
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@ -35,18 +35,15 @@ Design Goals
* Be usable as non-root * Be usable as non-root
* Create the easiest config management system to use, ever. * Create the easiest config management system to use, ever.
About the Author Communicate and Get Involved
```````````````` ````````````````````````````
Michael DeHaan is a Raleigh, NC based software developer and architect. He created other * Join the `ansible-project mailing list <http://groups.google.com/group/ansible-project>`_ on Google Groups
DevOps programs such as Cobbler, the popular Linux install server. * Join `#ansible <irc://irc.freenode.net/#ansible>`_ on the `freenode IRC network <http://freenode.net/>`_
Cobbler is used to deploy mission critical systems all over the planet, in industries * Visit the `project page <https://github.com/ansible/ansible>`_ on Github
ranging from massively multiplayer gaming, core internet infrastructure, finance,
chip design, and more. Michael also helped co-author of Func, which is used - View the `issue tracker <https://github.com/ansible/ansible/issues>`_
to orchestrate systems in lots of diverse places.
Ansible is an GPLv3 licensed open source project, so see the contributions section for how to
get involved.
Contents Contents
======== ========
@ -61,5 +58,18 @@ Contents
playbooks playbooks
examples examples
api api
communicate
man man
About the Author
````````````````
Michael DeHaan is a Raleigh, NC based software developer and architect. He created other
DevOps programs such as Cobbler, the popular Linux install server.
Cobbler is used to deploy mission critical systems all over the planet, in industries
ranging from massively multiplayer gaming, core internet infrastructure, finance,
chip design, and more. Michael also helped co-author of Func, which is used
to orchestrate systems in lots of diverse places.
Ansible is an GPLv3 licensed open source project, so see the contributions section for how to
get involved.

17
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@ -1,6 +1,9 @@
Ansible Modules Ansible Modules
=============== ===============
Ansible ships with a number of modules that can be executed directly on remote hosts or through
ansible playbooks.
.. seealso:: .. seealso::
:doc:`examples` :doc:`examples`
@ -10,16 +13,8 @@ Ansible Modules
:doc:`api` :doc:`api`
Examples of using modules with the Python API Examples of using modules with the Python API
Module Idempotence
About Modules ```````````````````
`````````````
Ansible ships with a number of modules that can be executed directly on remote hosts or through
ansible playbooks.
Idempotence
```````````
Most modules other than command are idempotent, meaning they will seek to avoid changes Most modules other than command are idempotent, meaning they will seek to avoid changes
unless a change needs to be made. When using ansible playbooks, these modules can unless a change needs to be made. When using ansible playbooks, these modules can
@ -189,7 +184,7 @@ yum
This module is in plan. This module is in plan.
WRITING YOUR OWN MODULES writing your own modules
```````````````````````` ````````````````````````
To write your own modules, simply follow the convention of those already available in To write your own modules, simply follow the convention of those already available in

40
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@ -1,5 +1,5 @@
Patterns The Inventory File, Patterns, and Groups
======== ========================================
How to select hosts you wish to manage How to select hosts you wish to manage
@ -10,6 +10,9 @@ How to select hosts you wish to manage
:doc:`playbooks` :doc:`playbooks`
Learning ansible's configuration management language Learning ansible's configuration management language
Inventory File Format
+++++++++++++++++++++
Ansible works against multiple systems in your infrastructure at the 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, 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:: 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 two.example.com
three.example.com three.example.com
Targetting All Systems
``````````````````````
The pattern 'all' or '*' targets all systems in the inventory file. Selecting Targets
+++++++++++++++++
Specific Hosts
``````````````
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
one.example.com:two.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
webservers:dbservers 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: Individual hosts, but not groups, can also be referenced using wildcards:
*.example.com *.example.com
*.com *.com
Mixing Things Up It's also ok to mix wildcard patterns and groups at the same time::
````````````````
Specific hosts, wildcards, and groups can all be mixed in the same pattern
one*.com:dbservers 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.

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@ -1,5 +1,5 @@
Playbooks Playbooks: Ansible for Deployment, Configuration Management, and Orchestration
========= ==============================================================================
.. seealso:: .. seealso::
@ -11,22 +11,20 @@ Playbooks
Learn about how to select hosts Learn about how to select hosts
Playbooks are a completely different way to use ansible and are particularly awesome. Playbooks are a completely different way to use ansible and are particularly awesome. They are the basis for a really simple configuration management and deployment system, unlike any that already exist, and one that is very well suited to deploying complex multi-machine applications. While you might run the main ansible program for ad-hoc tasks, playbooks are more likely to be kept in source control and used to push out your configuration or assure the configurations of your remote systems are in spec.
They are the basis for a really simple configuration management and deployment system, unlike any that already exist, and one that is very well suited to deploying complex multi-machine applications. While you might run the main ansible program for ad-hoc tasks, playbooks are more likely to be kept in source control and used to push out your configuration or assure the configurations of your remote systems are in spec.
Playbook Example Playbook Example
```````````````` ````````````````
Playbooks are expressed in YAML format and have a minimum of syntax. Each playbook is composed Playbooks are expressed in YAML format and have a minimum of syntax. Each playbook is composed
of one or more patterns in a list. By composing a playbook of multiple patterns, it is possible of one or more 'plays' in a list. By composing a playbook of multiple 'plays', it is possible
to orchestrate multi-machine deployments, running certain steps on all machines in to orchestrate multi-machine deployments, running certain steps on all machines in
the webservers group, then certain steps on the database server group, then more commands the webservers group, then certain steps on the database server group, then more commands
back on the webservers group, etc:: back on the webservers group, etc::
--- ---
- hosts: all - hosts: webservers
vars: vars:
http_port: 80 http_port: 80
max_clients: 200 max_clients: 200
@ -45,38 +43,39 @@ back on the webservers group, etc::
Hosts line Hosts line
`````````` ``````````
The hosts line is alist of one or more groups or host patterns, seperated by colons.:: The hosts line is alist of one or more groups or host patterns, seperated by colons, as
described in the 'patterns' documentation.
webservers:dbservers:*.foo.example.com
Vars section Vars section
```````````` ````````````
A list of variables that can be used in the 'action' lines of the template, or in A list of variables that can be used in the templates, action lines, or included files.
included templates. Variables are deferenced like this:: Variables are deferenced using ``jinja2`` syntax like this::
{{ varname }} {{ varname }}
These variables will be pushed down to the managed systems for use in templating operations. These variables will be pushed down to the managed systems for use in templating operations, where
the way to dereference them in templates is exactly the same.
Further, if there are discovered variables about the system (say, if facter or ohai were Further, if there are discovered variables about the system (say, if facter or ohai were
installed) these variables bubble up back into the playbook, and can be used on each installed) these variables bubble up back into the playbook, and can be used on each
system just like explicitly set variables. Facter variables are prefixed with 'facter' system just like explicitly set variables. Facter variables are prefixed with 'facter_'
and Ohai variables are prefixed with 'ohai'. and Ohai variables are prefixed with 'ohai_'.
Tasks list Tasks list
`````````` ``````````
Tasks are executed in order, one at a time, against all machines matched by the host Each play contains a list of tasks. Tasks are executed in order, one at a time, against
pattern, before moving on to the next task. Failed tasks are taken out of the rotation. all machines matched by the play's host pattern, before moving on to the next task.
Hosts with failed tasks are taken out of the rotation for the entire playbook. If things fail,
correct the problem and rerun. Modules other than command are idempotent, meaning if you
run them again, they will make the changes they are told to make to bring the system to
the desired state.
Task name and comment Task name and action
````````` `````````````````````
Each task has a name (required) and optional comment. This is for informational purposes only Every task must have a name, which is included in the output from running the playbook.
Task action
```````````
The action line is the name of an ansible module followed by parameters. Usually these The action line is the name of an ansible module followed by parameters. Usually these
are expressed in key=value form, except for the command module, which looks just like a Linux/Unix are expressed in key=value form, except for the command module, which looks just like a Linux/Unix