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283 lines
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<li class="toctree-l1"><a class="reference internal" href="cdist-intro.html">1. cdist - usable configuration management</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-why.html">2. Why should I use cdist?</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-types.html">14. cdist types</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-messaging.html">16. Messaging</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-parallelization.html">17. Parallelization</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-inventory.html">18. Inventory</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-integration.html">19. cdist integration / using cdist as library</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-reference.html">20. Reference</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-best-practice.html">21. Best practice</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-stages.html">22. Execution stages</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-cache.html">23. Local cache overview</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-saving-output-streams.html">24. Saving output streams</a></li>
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<li class="toctree-l1 current"><a class="current reference internal" href="#">25. Remote exec and copy commands</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-hacker.html">26. Hacking</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-troubleshooting.html">27. Troubleshooting</a></li>
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<li><a href="index.html">Docs</a> »</li>
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<li>25. Remote exec and copy commands</li>
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<div class="section" id="remote-exec-and-copy-commands">
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<h1>25. Remote exec and copy commands<a class="headerlink" href="#remote-exec-and-copy-commands" title="Permalink to this headline">¶</a></h1>
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<p>Cdist interacts with the target host in two ways:</p>
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<ul class="simple">
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<li>it executes code (__remote_exec)</li>
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<li>and it copies files (__remote_copy)</li>
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</ul>
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<p>By default this is accomplished with ssh and scp respectively.
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The default implementations used by cdist are:</p>
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<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">__remote_exec</span><span class="p">:</span> <span class="n">ssh</span> <span class="o">-</span><span class="n">o</span> <span class="n">User</span><span class="o">=</span><span class="n">root</span>
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<span class="n">__remote_copy</span><span class="p">:</span> <span class="n">scp</span> <span class="o">-</span><span class="n">o</span> <span class="n">User</span><span class="o">=</span><span class="n">root</span>
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</pre></div>
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</div>
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<p>The user can override these defaults by providing custom implementations and
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passing them to cdist with the --remote-exec and/or --remote-copy arguments.</p>
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<p>For __remote_exec, the custom implementation must behave as if it where ssh.
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For __remote_copy, it must behave like scp.
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Please notice, custom implementations should work like ssh/scp so __remote_copy
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must support IPv6 addresses enclosed in square brackets. For __remote_exec you
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must take into account that for some options (like -L) IPv6 addresses can be
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specified by enclosed in square brackets (see <strong>ssh</strong>(1) and
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<strong>scp</strong>(1)).</p>
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<p>With this simple interface the user can take total control of how cdist
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interacts with the target when required, while the default implementation
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remains as simple as possible.</p>
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