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< title > 31. Troubleshooting — cdist 7.0.0 documentation< / title >
2024-02-19 09:30:08 +00:00
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cdist
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2024-02-19 09:46:11 +00:00
7.0.0
2024-02-19 09:30:08 +00:00
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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 = "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 >
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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-configuration.html" > 13. Configuration< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-manifest.html" > 14. Manifest< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-type.html" > 15. cdist type< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-stages.html" > 26. Execution stages< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-saving-output-streams.html" > 28. Saving output streams< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-remote-exec-copy.html" > 29. Remote exec and copy commands< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-hacker.html" > 30. Hacking< / a > < / li >
< li class = "toctree-l1 current" > < a class = "current reference internal" href = "#" > 31. Troubleshooting< / a > < ul >
< li class = "toctree-l2" > < a class = "reference internal" href = "#error-in-manifest-is-not-considered-an-error-by-cdist" > 31.1. 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" > 31.2. Using debug dump helper script< / a > < / li >
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< li class = "breadcrumb-item active" > < span class = "section-number" > 31. < / span > Troubleshooting< / li >
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< h1 > < span class = "section-number" > 31. < / span > Troubleshooting< a class = "headerlink" href = "#troubleshooting" title = "Permalink to this heading" > ¶< / a > < / h1 >
< section id = "error-in-manifest-is-not-considered-an-error-by-cdist" >
< h2 > < span class = "section-number" > 31.1. < / span > 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 heading" > ¶< / a > < / h2 >
< 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 >
< div class = "highlight-sh notranslate" > < div class = "highlight" > < pre > < span > < / span > %< span class = "w" > < / span > cat< span class = "w" > < / span > ~/.cdist/manifest/init
< span class = "s2" > " < / span > < span class = "nv" > $__manifest< / span > < span class = "s2" > /special" < / span >
%< span class = "w" > < / span > cat< span class = "w" > < / span > ~/.cdist/manifest/special
< span class = "c1" > #!/bin/sh< / span >
< span class = "nb" > echo< / span > < span class = "w" > < / span > < span class = "s2" > " Here is an unclean exiting script" < / span >
somecommandthatdoesnotexist
< span class = "nb" > echo< / span > < span class = "w" > < / 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 >
< div class = "highlight-sh notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "c1" > # Execute as before, but abort on failure< / span >
sh< span class = "w" > < / span > -e< span class = "w" > < / span > < 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 = "w" > < / span > < span class = "s2" > " < / span > < span class = "nv" > $__manifest< / span > < span class = "s2" > /special" < / 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 >
< div class = "highlight-sh notranslate" > < div class = "highlight" > < pre > < span > < / span > %< span class = "w" > < / span > cat< span class = "w" > < / span > ~/.cdist/manifest/special
< span class = "c1" > #!/bin/sh -e< / span >
...
< / pre > < / div >
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< section id = "using-debug-dump-helper-script" >
< h2 > < span class = "section-number" > 31.2. < / span > Using debug dump helper script< a class = "headerlink" href = "#using-debug-dump-helper-script" title = "Permalink to this heading" > ¶< / a > < / h2 >
< 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,
< a class = "reference external" href = "man1/cdist-dump.html" > cdist-dump< / a > .< / p >
< p > For more info see:< / p >
< div class = "highlight-sh notranslate" > < div class = "highlight" > < pre > < span > < / span > cdist-dump< span class = "w" > < / span > -h
< / pre > < / div >
< / div >
< p > Or from cdist git cloned directory:< / p >
< div class = "highlight-sh notranslate" > < div class = "highlight" > < pre > < span > < / span > ./scripts/cdist-dump< span class = "w" > < / span > -h
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