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< 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 >
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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-manifest.html" > 13. Manifest< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-remote-exec-copy.html" > 28. Remote exec and copy commands< / a > < / li >
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< 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 >
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< li > 30. Troubleshooting< / li >
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< h1 > 30. Troubleshooting< a class = "headerlink" href = "#troubleshooting" title = "Permalink to this headline" > ¶< / a > < / h1 >
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< 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 >
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< 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 >
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< div class = "highlight-sh" > < div class = "highlight" > < pre > < span > < / span > % cat ~/.cdist/manifest/init
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< span class = "s2" > " < / span > < span class = "nv" > $__manifest< / span > < span class = "s2" > /special" < / span >
% cat ~/.cdist/manifest/special
< span class = "c1" > #!/bin/sh< / span >
< span class = "nb" > echo< / span > < span class = "s2" > " Here is an unclean exiting script" < / span >
somecommandthatdoesnotexist
< span class = "nb" > echo< / span > < span class = "s2" > " I continue here although previous command failed" < / span >
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< 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 >
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< div class = "highlight-sh" > < div class = "highlight" > < pre > < span > < / span > < span class = "c1" > # Execute as before, but abort on failure< / span >
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sh -e < span class = "s2" > " < / span > < span class = "nv" > $__manifest< / span > < span class = "s2" > /special" < / span >
< span class = "c1" > # Source the script in our namespace, runs in a set -e environment:< / span >
. < span class = "s2" > " < / span > < span class = "nv" > $__manifest< / span > < span class = "s2" > /special" < / span >
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< p > The third solution is to include a shebang header in every script
you write to use the -e flag:< / p >
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< div class = "highlight-sh" > < div class = "highlight" > < pre > < span > < / span > % cat ~/.cdist/manifest/special
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< span class = "c1" > #!/bin/sh -e< / span >
...
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< div class = "section" id = "using-debug-dump-helper-script" >
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< h2 > 30.2. Using debug dump helper script< a class = "headerlink" href = "#using-debug-dump-helper-script" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< 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 >
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< div class = "highlight-sh" > < div class = "highlight" > < pre > < span > < / span > cdist-dump -h
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< p > Or from cdist git cloned directory:< / p >
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< div class = "highlight-sh" > < div class = "highlight" > < pre > < span > < / span > ./scripts/cdist-dump -h
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