www.nico.schottelius.org/software/cdist/man/2.3.5/man7/cdist-troubleshooting.html
2013-10-10 10:00:27 +09:00

28 lines
No EOL
3.7 KiB
HTML
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<?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"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>cdist-troubleshooting(7)</title><link rel="stylesheet" type="text/css" href="docbook-xsl.css" /><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /></head><body><div xml:lang="en" class="article" lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="idm140036739037328"></a>cdist-troubleshooting(7)</h2></div><div><div class="author"><h3 class="author"><span class="firstname">Nico</span> <span class="surname">Schottelius</span></h3><code class="email">&lt;<a class="email" href="mailto:nico-cdist--@--schottelius.org">nico-cdist--@--schottelius.org</a>&gt;</code></div></div></div><hr /></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="section"><a href="#_name">1. NAME</a></span></dt><dt><span class="section"><a href="#_error_in_manifest_is_not_considered_an_error_by_cdist">2. ERROR IN MANIFEST IS NOT CONSIDERED AN ERROR BY CDIST</a></span></dt><dt><span class="section"><a href="#_see_also">3. SEE ALSO</a></span></dt><dt><span class="section"><a href="#_copying">4. COPYING</a></span></dt></dl></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="_name"></a>1. NAME</h2></div></div></div><p>cdist-troubleshooting - common problems and their solutions</p></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="_error_in_manifest_is_not_considered_an_error_by_cdist"></a>2. ERROR IN MANIFEST IS NOT CONSIDERED AN ERROR BY CDIST</h2></div></div></div><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><pre class="screen">% cat ~/.cdist/manifest/init
"$__manifest/special"
% cat ~/.cdist/manifest/special
#!/bin/sh
echo "Here is an unclean exiting script"
somecommandthatdoesnotexist
echo "I continue here although previous command failed"</pre><p>We can clearly see that <span class="strong"><strong>somecommandthatdoesnotexist</strong></span>
will fail in ~/.cdist/manifest/special. But as the custom
script is not called with the -e flag (exit on failure) of shell,
it does not lead to an error. And thus cdist sees the exit 0
code of the last echo line instead of the failing command.</p><p>All scripts executed by cdist carry the -e flag.
To prevent the above from happening, there are three solutions available,
two of which can be used in the calling script:</p><pre class="screen"># Execute as before, but abort on failure
sh -e "$__manifest/special"
# Source the script in our namespace, runs in a set -e environment:
. "$__manifest/special"</pre><p>The third solution is to include a shebang header in every script
you write to use the -e flag:</p><pre class="screen">% cat ~/.cdist/manifest/special
#!/bin/sh -e
...</pre></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="_see_also"></a>3. SEE ALSO</h2></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
cdist(1)
</li><li class="listitem">
cdist-tutorial(7)
</li></ul></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="_copying"></a>4. COPYING</h2></div></div></div><p>Copyright (C) 2013 Nico Schottelius. Free use of this software is
granted under the terms of the GNU General Public License version 3 (GPLv3).</p></div></div></body></html>