cdist-web/src/extra/manual/beta/cdist-troubleshooting.html

298 lines
11 KiB
HTML
Raw Normal View History

2019-04-23 18:55:23 +00:00
<!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">
2019-05-17 11:33:31 +00:00
<title>30. Troubleshooting &mdash; cdist 5.0.2 documentation</title>
2019-04-23 18:55:23 +00:00
<script type="text/javascript" src="_static/js/modernizr.min.js"></script>
2019-05-17 11:33:31 +00:00
<script type="text/javascript">
var DOCUMENTATION_OPTIONS = {
URL_ROOT:'./',
VERSION:'5.0.2',
LANGUAGE:'None',
COLLAPSE_INDEX:false,
FILE_SUFFIX:'.html',
HAS_SOURCE: true,
SOURCELINK_SUFFIX: '.txt'
};
</script>
2019-04-23 18:55:23 +00:00
<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>
<link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
<link rel="stylesheet" href="_static/pygments.css" type="text/css" />
<link rel="index" title="Index" href="genindex.html" />
<link rel="search" title="Search" href="search.html" />
2019-05-04 22:18:20 +00:00
<link rel="prev" title="29. Hacking" href="cdist-hacker.html" />
2019-04-23 18:55:23 +00:00
</head>
<body class="wy-body-for-nav">
<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
2019-05-04 22:18:20 +00:00
<img src="_static/cdist-logo.jpeg" class="logo" alt="Logo"/>
2019-04-23 18:55:23 +00:00
</a>
<div class="version">
2019-05-17 11:33:31 +00:00
5.0.2
2019-04-23 18:55:23 +00:00
</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">
2019-05-04 22:18:20 +00:00
<li class="toctree-l1"><a class="reference internal" href="cdist-why.html">1. Why should I use cdist?</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-features.html">2. Features</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-os.html">3. Supported operating systems</a></li>
2019-04-23 18:55:23 +00:00
<li class="toctree-l1"><a class="reference internal" href="cdist-install.html">4. How to install cdist</a></li>
2019-05-04 22:18:20 +00:00
<li class="toctree-l1"><a class="reference internal" href="cdist-upgrade.html">5. How to upgrade cdist</a></li>
2019-04-23 18:55:23 +00:00
<li class="toctree-l1"><a class="reference internal" href="cdist-support.html">6. Support</a></li>
2019-05-04 22:18:20 +00:00
<li class="toctree-l1"><a class="reference internal" href="cdist-quickstart.html">7. Quickstart</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-real-world.html">8. Dive into real world cdist</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="man1/cdist-dump.html">10. cdist-dump(1)</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-bootstrap.html">11. Bootstrap</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-configuration.html">12. Configuration</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-manifest.html">13. Manifest</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-type.html">14. cdist type</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-types.html">15. cdist types</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-explorer.html">16. Explorer</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-messaging.html">17. Messaging</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-parallelization.html">18. Parallelization</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-inventory.html">19. Inventory</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-trigger.html">20. Trigger</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-preos.html">21. PreOS</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-integration.html">22. cdist integration / using cdist as library</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-reference.html">23. Reference</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-best-practice.html">24. Best practice</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-stages.html">25. Execution stages</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-cache.html">26. Local cache overview</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-saving-output-streams.html">27. Saving output streams</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-remote-exec-copy.html">28. Remote exec and copy commands</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdist-hacker.html">29. Hacking</a></li>
<li class="toctree-l1 current"><a class="current reference internal" href="#">30. Troubleshooting</a><ul>
<li class="toctree-l2"><a class="reference internal" href="#error-in-manifest-is-not-considered-an-error-by-cdist">30.1. Error in manifest is not considered an error by cdist</a></li>
<li class="toctree-l2"><a class="reference internal" href="#using-debug-dump-helper-script">30.2. Using debug dump helper script</a></li>
2019-04-23 18:55:23 +00:00
</ul>
</li>
</ul>
</div>
</div>
</nav>
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
<nav class="wy-nav-top" 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> &raquo;</li>
2019-05-04 22:18:20 +00:00
<li>30. Troubleshooting</li>
2019-04-23 18:55:23 +00:00
<li class="wy-breadcrumbs-aside">
<a href="_sources/cdist-troubleshooting.rst.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="troubleshooting">
2019-05-04 22:18:20 +00:00
<h1>30. Troubleshooting<a class="headerlink" href="#troubleshooting" title="Permalink to this headline"></a></h1>
2019-04-23 18:55:23 +00:00
<div class="section" id="error-in-manifest-is-not-considered-an-error-by-cdist">
2019-05-04 22:18:20 +00:00
<h2>30.1. Error in manifest is not considered an error by cdist<a class="headerlink" href="#error-in-manifest-is-not-considered-an-error-by-cdist" title="Permalink to this headline"></a></h2>
2019-04-23 18:55:23 +00:00
<p>Situation: You are executing other scripts from a manifest.
This script fails, but cdist does not recognise the error.
An example script would be something like this:</p>
2019-05-17 11:33:31 +00:00
<div class="highlight-sh"><div class="highlight"><pre><span></span>% cat ~/.cdist/manifest/init
2019-04-23 18:55:23 +00:00
<span class="s2">&quot;</span><span class="nv">$__manifest</span><span class="s2">/special&quot;</span>
% cat ~/.cdist/manifest/special
<span class="c1">#!/bin/sh</span>
<span class="nb">echo</span> <span class="s2">&quot;Here is an unclean exiting script&quot;</span>
somecommandthatdoesnotexist
<span class="nb">echo</span> <span class="s2">&quot;I continue here although previous command failed&quot;</span>
</pre></div>
</div>
<p>We can clearly see that <strong>somecommandthatdoesnotexist</strong>
will fail in ~/.cdist/manifest/special. But as the custom
script is not called with the -e flag (exit on failure) of shell,
it does not lead to an error. And thus cdist sees the exit 0
code of the last echo line instead of the failing command.</p>
<p>All scripts executed by cdist carry the -e flag.
To prevent the above from happening, there are three solutions available,
two of which can be used in the calling script:</p>
2019-05-17 11:33:31 +00:00
<div class="highlight-sh"><div class="highlight"><pre><span></span><span class="c1"># Execute as before, but abort on failure</span>
2019-04-23 18:55:23 +00:00
sh -e <span class="s2">&quot;</span><span class="nv">$__manifest</span><span class="s2">/special&quot;</span>
<span class="c1"># Source the script in our namespace, runs in a set -e environment:</span>
. <span class="s2">&quot;</span><span class="nv">$__manifest</span><span class="s2">/special&quot;</span>
</pre></div>
</div>
<p>The third solution is to include a shebang header in every script
you write to use the -e flag:</p>
2019-05-17 11:33:31 +00:00
<div class="highlight-sh"><div class="highlight"><pre><span></span>% cat ~/.cdist/manifest/special
2019-04-23 18:55:23 +00:00
<span class="c1">#!/bin/sh -e</span>
...
</pre></div>
</div>
</div>
<div class="section" id="using-debug-dump-helper-script">
2019-05-04 22:18:20 +00:00
<h2>30.2. Using debug dump helper script<a class="headerlink" href="#using-debug-dump-helper-script" title="Permalink to this headline"></a></h2>
2019-04-23 18:55:23 +00:00
<p>Since cdist stores data to local cache that can be used for debugging there
is a helper script that dumps data from local cache.</p>
<p>For more info see:</p>
2019-05-17 11:33:31 +00:00
<div class="highlight-sh"><div class="highlight"><pre><span></span>cdist-dump -h
2019-04-23 18:55:23 +00:00
</pre></div>
</div>
<p>Or from cdist git cloned directory:</p>
2019-05-17 11:33:31 +00:00
<div class="highlight-sh"><div class="highlight"><pre><span></span>./scripts/cdist-dump -h
2019-04-23 18:55:23 +00:00
</pre></div>
</div>
</div>
</div>
</div>
</div>
<footer>
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
2019-05-04 22:18:20 +00:00
<a href="cdist-hacker.html" class="btn btn-neutral float-left" title="29. Hacking" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
2019-04-23 18:55:23 +00:00
</div>
<hr/>
<div role="contentinfo">
<p>
2019-05-04 22:18:20 +00:00
&copy; Copyright ungleich GmbH 2019
2019-04-23 18:55:23 +00:00
</p>
</div>
Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/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">
jQuery(function () {
SphinxRtdTheme.Navigation.enable(true);
});
</script>
</body>
</html>