273 lines
9.9 KiB
HTML
273 lines
9.9 KiB
HTML
|
|
||
|
|
|
||
|
|
<!DOCTYPE html>
|
||
|
|
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
|
||
|
|
<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
|
||
|
|
<head>
|
||
|
|
<meta charset="utf-8">
|
||
|
|
|
||
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||
|
|
|
||
|
|
<title>14. Explorer — cdist 4.3.2 documentation</title>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<link rel="index" title="Index"
|
||
|
|
href="genindex.html"/>
|
||
|
|
<link rel="search" title="Search" href="search.html"/>
|
||
|
|
<link rel="top" title="cdist 4.3.2 documentation" href="index.html"/>
|
||
|
|
<link rel="next" title="15. Messaging" href="cdist-messaging.html"/>
|
||
|
|
<link rel="prev" title="13.100. cdist-type__zypper_service(7)" href="man7/cdist-type__zypper_service.html"/>
|
||
|
|
|
||
|
|
|
||
|
|
<script src="_static/js/modernizr.min.js"></script>
|
||
|
|
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body class="wy-body-for-nav" role="document">
|
||
|
|
|
||
|
|
<div class="wy-grid-for-nav">
|
||
|
|
|
||
|
|
|
||
|
|
<nav data-toggle="wy-nav-shift" class="wy-nav-side">
|
||
|
|
<div class="wy-side-scroll">
|
||
|
|
<div class="wy-side-nav-search">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<a href="index.html" class="icon icon-home"> cdist
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="version">
|
||
|
|
4.3.2
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div role="search">
|
||
|
|
<form id="rtd-search-form" class="wy-form" action="search.html" method="get">
|
||
|
|
<input type="text" name="q" placeholder="Search docs" />
|
||
|
|
<input type="hidden" name="check_keywords" value="yes" />
|
||
|
|
<input type="hidden" name="area" value="default" />
|
||
|
|
</form>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="current">
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-intro.html">1. cdist - usable configuration management</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-why.html">2. Why should I use cdist?</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-os.html">3. Supported Operating Systems</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-install.html">4. How to install cdist</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-update.html">5. How to update cdist</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-support.html">6. Support</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-features.html">7. Features</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-quickstart.html">8. Quickstart</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="man1/cdist.html">9. cdist(1)</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-bootstrap.html">10. Bootstrap</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-manifest.html">11. Manifest</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-type.html">12. cdist type</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-types.html">13. cdist types</a></li>
|
||
|
|
<li class="toctree-l1 current"><a class="current reference internal" href="#">14. Explorer</a><ul>
|
||
|
|
<li class="toctree-l2"><a class="reference internal" href="#description">14.1. Description</a></li>
|
||
|
|
<li class="toctree-l2"><a class="reference internal" href="#examples">14.2. Examples</a></li>
|
||
|
|
</ul>
|
||
|
|
</li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-messaging.html">15. Messaging</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-parallelization.html">16. Parallelization</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-reference.html">17. Reference</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-best-practice.html">18. Best practice</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-stages.html">19. Execution stages</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-remote-exec-copy.html">20. Remote exec and copy commands</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-hacker.html">21. Hacking</a></li>
|
||
|
|
<li class="toctree-l1"><a class="reference internal" href="cdist-troubleshooting.html">22. Troubleshooting</a></li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</nav>
|
||
|
|
|
||
|
|
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
|
||
|
|
|
||
|
|
|
||
|
|
<nav class="wy-nav-top" role="navigation" aria-label="top navigation">
|
||
|
|
<i data-toggle="wy-nav-top" class="fa fa-bars"></i>
|
||
|
|
<a href="index.html">cdist</a>
|
||
|
|
</nav>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="wy-nav-content">
|
||
|
|
<div class="rst-content">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div role="navigation" aria-label="breadcrumbs navigation">
|
||
|
|
<ul class="wy-breadcrumbs">
|
||
|
|
<li><a href="index.html">Docs</a> »</li>
|
||
|
|
|
||
|
|
<li>14. Explorer</li>
|
||
|
|
<li class="wy-breadcrumbs-aside">
|
||
|
|
|
||
|
|
|
||
|
|
<a href="_sources/cdist-explorer.txt" rel="nofollow"> View page source</a>
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
</ul>
|
||
|
|
<hr/>
|
||
|
|
</div>
|
||
|
|
<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
|
||
|
|
<div itemprop="articleBody">
|
||
|
|
|
||
|
|
<div class="section" id="explorer">
|
||
|
|
<h1>14. Explorer<a class="headerlink" href="#explorer" title="Permalink to this headline">¶</a></h1>
|
||
|
|
<div class="section" id="description">
|
||
|
|
<h2>14.1. Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
|
||
|
|
<p>Explorer are small shell scripts, which will be executed on the target
|
||
|
|
host. The aim of the explorer is to give hints to types on how to act on the
|
||
|
|
target system. An explorer outputs the result to stdout, which is usually
|
||
|
|
a one liner, but may be empty or multi line especially in the case of
|
||
|
|
type explorers.</p>
|
||
|
|
<p>There are general explorers, which are run in an early stage, and
|
||
|
|
type explorers. Both work almost exactly the same way, with the difference
|
||
|
|
that the values of the general explorers are stored in a general location and
|
||
|
|
the type specific below the object.</p>
|
||
|
|
<p>Explorers can reuse other explorers on the target system by calling</p>
|
||
|
|
<div class="highlight-default"><div class="highlight"><pre><span></span>$__explorer/<explorer_name> (general and type explorer)
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
<p>or</p>
|
||
|
|
<div class="highlight-default"><div class="highlight"><pre><span></span>$__type_explorer/<explorer name> (type explorer).
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
<p>In case of significant errors, the explorer may exit non-zero and return an
|
||
|
|
error message on stderr, which will cause cdist to abort.</p>
|
||
|
|
<p>You can also use stderr for debugging purposes while developing a new
|
||
|
|
explorer.</p>
|
||
|
|
</div>
|
||
|
|
<div class="section" id="examples">
|
||
|
|
<h2>14.2. Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
|
||
|
|
<p>A very simple explorer may look like this:</p>
|
||
|
|
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">hostname</span>
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
<p>Which is in practise the <strong>hostname</strong> explorer.</p>
|
||
|
|
<p>A type explorer, which could check for the status of a package may look like this:</p>
|
||
|
|
<div class="highlight-sh"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="o">[</span> -f <span class="s2">"</span><span class="nv">$__object</span><span class="s2">/parameter/name"</span> <span class="o">]</span><span class="p">;</span> <span class="k">then</span>
|
||
|
|
<span class="nv">name</span><span class="o">=</span><span class="s2">"</span><span class="k">$(</span>cat <span class="s2">"</span><span class="nv">$__object</span><span class="s2">/parameter/name"</span><span class="k">)</span><span class="s2">"</span>
|
||
|
|
<span class="k">else</span>
|
||
|
|
<span class="nv">name</span><span class="o">=</span><span class="s2">"</span><span class="nv">$__object_id</span><span class="s2">"</span>
|
||
|
|
<span class="k">fi</span>
|
||
|
|
|
||
|
|
<span class="c1"># Expect dpkg failing, if package is not known / installed</span>
|
||
|
|
dpkg -s <span class="s2">"</span><span class="nv">$name</span><span class="s2">"</span> 2>/dev/null <span class="o">||</span> <span class="nb">exit</span> 0
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
<footer>
|
||
|
|
|
||
|
|
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
|
||
|
|
|
||
|
|
<a href="cdist-messaging.html" class="btn btn-neutral float-right" title="15. Messaging" accesskey="n">Next <span class="fa fa-arrow-circle-right"></span></a>
|
||
|
|
|
||
|
|
|
||
|
|
<a href="man7/cdist-type__zypper_service.html" class="btn btn-neutral" title="13.100. cdist-type__zypper_service(7)" accesskey="p"><span class="fa fa-arrow-circle-left"></span> Previous</a>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
<hr/>
|
||
|
|
|
||
|
|
<div role="contentinfo">
|
||
|
|
<p>
|
||
|
|
© Copyright .
|
||
|
|
|
||
|
|
</p>
|
||
|
|
</div>
|
||
|
|
Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
|
||
|
|
|
||
|
|
</footer>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<script type="text/javascript">
|
||
|
|
var DOCUMENTATION_OPTIONS = {
|
||
|
|
URL_ROOT:'./',
|
||
|
|
VERSION:'4.3.2',
|
||
|
|
COLLAPSE_INDEX:false,
|
||
|
|
FILE_SUFFIX:'.html',
|
||
|
|
HAS_SOURCE: true
|
||
|
|
};
|
||
|
|
</script>
|
||
|
|
<script type="text/javascript" src="_static/jquery.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/js/theme.js"></script>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<script type="text/javascript">
|
||
|
|
jQuery(function () {
|
||
|
|
SphinxRtdTheme.StickyNav.enable();
|
||
|
|
});
|
||
|
|
</script>
|
||
|
|
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|