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Update the inventory docs + rebuild

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Michael DeHaan 2012-07-20 11:51:03 -04:00
parent 52bcdf5e38
commit db014182e6
16 changed files with 94 additions and 95 deletions

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@ -275,7 +275,7 @@ languages:
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&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
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@ -359,7 +359,7 @@ a conf.d file appropriately or something similar. Who knows?</p>
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@ -297,7 +297,7 @@ This way you have an audit trail describing when and why you changed the rules a
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&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
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@ -382,7 +382,7 @@ a simplified syntax for this.</p>
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&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
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@ -388,7 +388,7 @@ tasks &#8211; whether for a QA sytem, build system, or anything you can think of
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&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
Last updated on Jul 04, 2012.<br/> Last updated on Jul 20, 2012.<br/>
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@ -190,7 +190,7 @@ s.parentNode.insertBefore(ga, s);
</p> </p>
<p> <p>
&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
Last updated on Jul 04, 2012.<br/> Last updated on Jul 20, 2012.<br/>
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@ -377,7 +377,7 @@ explore, but you already have a fully working infrastructure!</p>
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<p> <p>
&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
Last updated on Jul 04, 2012.<br/> Last updated on Jul 20, 2012.<br/>
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@ -301,7 +301,8 @@ Email: <input type=text name=email>&nbsp;&nbsp;<input type=submit name="sub" val
<li class="toctree-l2"><a class="reference internal" href="patterns.html#host-variables">Host Variables</a></li> <li class="toctree-l2"><a class="reference internal" href="patterns.html#host-variables">Host Variables</a></li>
<li class="toctree-l2"><a class="reference internal" href="patterns.html#group-variables">Group Variables</a></li> <li class="toctree-l2"><a class="reference internal" href="patterns.html#group-variables">Group Variables</a></li>
<li class="toctree-l2"><a class="reference internal" href="patterns.html#groups-of-groups-and-group-variables">Groups of Groups, and Group Variables</a></li> <li class="toctree-l2"><a class="reference internal" href="patterns.html#groups-of-groups-and-group-variables">Groups of Groups, and Group Variables</a></li>
<li class="toctree-l2"><a class="reference internal" href="patterns.html#yaml-inventory-format">YAML Inventory Format</a></li> <li class="toctree-l2"><a class="reference internal" href="patterns.html#splitting-out-host-and-group-specific-data">Splitting Out Host and Group Specific Data</a></li>
<li class="toctree-l2"><a class="reference internal" href="patterns.html#yaml-inventory">YAML Inventory</a></li>
</ul> </ul>
</li> </li>
<li class="toctree-l1"><a class="reference internal" href="examples.html">Command Line</a><ul> <li class="toctree-l1"><a class="reference internal" href="examples.html">Command Line</a><ul>
@ -453,7 +454,7 @@ Puppet Labs, and is now with <a class="reference external" href="http://rpath.co
</p> </p>
<p> <p>
&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
Last updated on Jul 04, 2012.<br/> Last updated on Jul 20, 2012.<br/>
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@ -455,7 +455,7 @@ Stop by the mailing list to inquire about requirements.</p>
</p> </p>
<p> <p>
&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
Last updated on Jul 04, 2012.<br/> Last updated on Jul 20, 2012.<br/>
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@ -833,7 +833,7 @@ yum pkg=httpd state=installed</pre>
</p> </p>
<p> <p>
&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
Last updated on Jul 04, 2012.<br/> Last updated on Jul 20, 2012.<br/>
</p> </p>
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@ -153,7 +153,8 @@ s.parentNode.insertBefore(ga, s);
<li><a class="reference internal" href="#host-variables">Host Variables</a></li> <li><a class="reference internal" href="#host-variables">Host Variables</a></li>
<li><a class="reference internal" href="#group-variables">Group Variables</a></li> <li><a class="reference internal" href="#group-variables">Group Variables</a></li>
<li><a class="reference internal" href="#groups-of-groups-and-group-variables">Groups of Groups, and Group Variables</a></li> <li><a class="reference internal" href="#groups-of-groups-and-group-variables">Groups of Groups, and Group Variables</a></li>
<li><a class="reference internal" href="#yaml-inventory-format">YAML Inventory Format</a></li> <li><a class="reference internal" href="#splitting-out-host-and-group-specific-data">Splitting Out Host and Group Specific Data</a></li>
<li><a class="reference internal" href="#yaml-inventory">YAML Inventory</a></li>
</ul> </ul>
</li> </li>
</ul> </ul>
@ -234,7 +235,7 @@ with the aforementioned bracket headers in the inventory file:</p>
<div class="highlight-python"><pre>webservers <div class="highlight-python"><pre>webservers
webservers:dbservers</pre> webservers:dbservers</pre>
</div> </div>
<p>In 0.5 and later, you can exclude groups as well, for instance, all webservers not in Phoenix:</p> <p>You can exclude groups as well, for instance, all webservers not in Phoenix:</p>
<div class="highlight-python"><pre>webservers:!phoenix</pre> <div class="highlight-python"><pre>webservers:!phoenix</pre>
</div> </div>
<p>Individual host names (or IPs), but not groups, can also be referenced using <p>Individual host names (or IPs), but not groups, can also be referenced using
@ -296,49 +297,45 @@ northeast
southwest southwest
southeast</pre> southeast</pre>
</div> </div>
<p>If you need to store lists or hash data, or prefer to keep host and group specific variables
seperate from the inventory file, see the next section.</p>
</div> </div>
<div class="section" id="yaml-inventory-format"> <div class="section" id="splitting-out-host-and-group-specific-data">
<h2>YAML Inventory Format<a class="headerlink" href="#yaml-inventory-format" title="Permalink to this headline"></a></h2> <h2>Splitting Out Host and Group Specific Data<a class="headerlink" href="#splitting-out-host-and-group-specific-data" title="Permalink to this headline"></a></h2>
<p>For that prefer to use it, the inventory file can also be expressed in <p>In Ansible 0.6 and later, in addition to the storing variables directly in the INI file, host and
YAML:</p> group variables can be stored in individual files relative to the inventory file. These
variable files are in YAML format.</p>
<p>Assuming the inventory file path is:</p>
<div class="highlight-python"><pre>/etc/ansible/hosts</pre>
</div>
<p>If the host is named &#8216;foosball&#8217;, and in groups &#8216;raleigh&#8217; and &#8216;webservers&#8217;, variables
in YAML files at the following locations will be made available to the host:</p>
<div class="highlight-python"><pre>/etc/ansible/group_vars/raleigh
/etc/ansible/group_vars/webservers
/etc/ansible/host_vars/foosball</pre>
</div>
<p>For instance, suppose you have hosts grouped by datacenter, and each datacenter
uses some different servers. The data in the groupfile &#8216;/etc/ansible/group_vars/raleigh&#8217; for
the &#8216;raleigh&#8217; group might look like:</p>
<div class="highlight-python"><pre>--- <div class="highlight-python"><pre>---
ntp_server: acme.example.org
# some ungrouped hosts, either use the short string form or the "host: " prefix database_server: storage.example.org</pre>
- host: jupiter
- mars
# variables can be assigned like this...
- host: saturn
vars:
- moon: titan
# groups can also set variables to all hosts in the group
# here are a bunch of hosts using a non-standard SSH port
# and also defining a variable 'ntpserver'
- group: greek
hosts:
- zeus
- hera
- poseidon
vars:
- ansible_ssh_port: 3000
- ntp_server: olympus.example.com
# individual hosts can still set variables inside of groups too
# so you aren't limited to just group variables and host variables.
- group: norse
hosts:
- host: thor
vars:
- hammer: True
- odin
- loki
vars:
- asdf: 1234</pre>
</div> </div>
<p>It is ok if these files do not exist, this is an optional feature.</p>
<p>Tip: Keeping your inventory file and variables in a git repo (or other version control)
is an excellent way to track changes to your inventory and host variables.</p>
<p>Tip: If you ever have two python interpreters on a system, set a variable called &#8216;ansible_python_interpreter&#8217; to <p>Tip: If you ever have two python interpreters on a system, set a variable called &#8216;ansible_python_interpreter&#8217; to
the Python interpreter path you would like to use. (This is available in version 0.5 and later)</p> the Python interpreter path you would like to use.</p>
<p>Tip: Be sure to start your YAML file with the YAML record designator <tt class="docutils literal"><span class="pre">---</span></tt>.</p> <p>Tip: Be sure to start any YAML file with the YAML record designator <tt class="docutils literal"><span class="pre">---</span></tt> on the first line.</p>
</div>
<div class="section" id="yaml-inventory">
<h2>YAML Inventory<a class="headerlink" href="#yaml-inventory" title="Permalink to this headline"></a></h2>
<p>Ansible&#8217;s YAML inventory format is deprecated and will be removed in Ansible 0.7. Ansible 0.6 includes
a <a class="reference external" href="https://github.com/ansible/ansible/blob/devel/examples/scripts/yaml_to_ini.py">conversion script</a>.</p>
<p>Usage:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="n">yaml_to_ini</span><span class="o">.</span><span class="n">py</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">ansible</span><span class="o">/</span><span class="n">hosts</span>
</pre></div>
</div>
<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">
@ -370,7 +367,7 @@ the Python interpreter path you would like to use. (This is available in versio
</p> </p>
<p> <p>
&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
Last updated on Jul 04, 2012.<br/> Last updated on Jul 20, 2012.<br/>
</p> </p>
</div> </div>
</footer> </footer>

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@ -483,7 +483,7 @@ package is installed. Try it!</p>
</p> </p>
<p> <p>
&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
Last updated on Jul 04, 2012.<br/> Last updated on Jul 20, 2012.<br/>
</p> </p>
</div> </div>
</footer> </footer>

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@ -508,7 +508,7 @@ logs from ansible-pull runs would be an excellent way to gather and analyze remo
</p> </p>
<p> <p>
&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
Last updated on Jul 04, 2012.<br/> Last updated on Jul 20, 2012.<br/>
</p> </p>
</div> </div>
</footer> </footer>

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@ -67,7 +67,7 @@ with the aforementioned bracket headers in the inventory file::
webservers webservers
webservers:dbservers webservers:dbservers
In 0.5 and later, you can exclude groups as well, for instance, all webservers not in Phoenix:: You can exclude groups as well, for instance, all webservers not in Phoenix::
webservers:!phoenix webservers:!phoenix
@ -138,51 +138,52 @@ variables to groups. These variables can be used by /usr/bin/ansible-playbook,
southwest southwest
southeast southeast
YAML Inventory Format If you need to store lists or hash data, or prefer to keep host and group specific variables
+++++++++++++++++++++ seperate from the inventory file, see the next section.
For that prefer to use it, the inventory file can also be expressed in Splitting Out Host and Group Specific Data
YAML:: ++++++++++++++++++++++++++++++++++++++++++
In Ansible 0.6 and later, in addition to the storing variables directly in the INI file, host and
group variables can be stored in individual files relative to the inventory file. These
variable files are in YAML format.
Assuming the inventory file path is::
/etc/ansible/hosts
If the host is named 'foosball', and in groups 'raleigh' and 'webservers', variables
in YAML files at the following locations will be made available to the host::
/etc/ansible/group_vars/raleigh
/etc/ansible/group_vars/webservers
/etc/ansible/host_vars/foosball
For instance, suppose you have hosts grouped by datacenter, and each datacenter
uses some different servers. The data in the groupfile '/etc/ansible/group_vars/raleigh' for
the 'raleigh' group might look like::
--- ---
ntp_server: acme.example.org
database_server: storage.example.org
# some ungrouped hosts, either use the short string form or the "host: " prefix It is ok if these files do not exist, this is an optional feature.
- host: jupiter
- mars
# variables can be assigned like this... Tip: Keeping your inventory file and variables in a git repo (or other version control)
- host: saturn is an excellent way to track changes to your inventory and host variables.
vars:
- moon: titan
# groups can also set variables to all hosts in the group
# here are a bunch of hosts using a non-standard SSH port
# and also defining a variable 'ntpserver'
- group: greek
hosts:
- zeus
- hera
- poseidon
vars:
- ansible_ssh_port: 3000
- ntp_server: olympus.example.com
# individual hosts can still set variables inside of groups too
# so you aren't limited to just group variables and host variables.
- group: norse
hosts:
- host: thor
vars:
- hammer: True
- odin
- loki
vars:
- asdf: 1234
Tip: If you ever have two python interpreters on a system, set a variable called 'ansible_python_interpreter' to Tip: If you ever have two python interpreters on a system, set a variable called 'ansible_python_interpreter' to
the Python interpreter path you would like to use. (This is available in version 0.5 and later) the Python interpreter path you would like to use.
Tip: Be sure to start your YAML file with the YAML record designator ``---``. YAML Inventory
++++++++++++++
Ansible's YAML inventory format is deprecated and will be removed in Ansible 0.7. Ansible 0.6 includes
a `conversion script <https://github.com/ansible/ansible/blob/devel/examples/scripts/yaml_to_ini.py>`_.
Usage::
yaml_to_ini.py /etc/ansible/hosts
.. seealso:: .. seealso::

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@ -207,7 +207,7 @@ s.parentNode.insertBefore(ga, s);
</p> </p>
<p> <p>
&copy; Copyright 2012 Michael DeHaan.<br/> &copy; Copyright 2012 Michael DeHaan.<br/>
Last updated on Jul 04, 2012.<br/> Last updated on Jul 20, 2012.<br/>
</p> </p>
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