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616 lines
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<li class="toctree-l1"><a class="reference internal" href="cdist-parallelization.html">19. Parallelization</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-best-practice.html">25. Best practice</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-cache.html">27. Local cache overview</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>
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<li class="toctree-l1 current"><a class="current reference internal" href="#">29. Remote exec and copy commands</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="#examples">29.1. Examples</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="#ssh">29.1.1. ssh</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#local">29.1.2. local</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#chroot">29.1.3. chroot</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#rsync">29.1.4. rsync</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#schroot">29.1.5. schroot</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#schroot-uri">29.1.6. schroot-uri</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#sudo">29.1.7. sudo</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-hacker.html">30. Hacking</a></li>
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<li class="toctree-l1"><a class="reference internal" href="cdist-troubleshooting.html">31. Troubleshooting</a></li>
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<li><a href="index.html">Docs</a> »</li>
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<li><span class="section-number">29. </span>Remote exec and copy commands</li>
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<a href="_sources/cdist-remote-exec-copy.rst.txt" rel="nofollow"> View page source</a>
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<section id="remote-exec-and-copy-commands">
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<h1><span class="section-number">29. </span>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><p>it executes code (__remote_exec)</p></li>
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<li><p>and it copies files (__remote_copy)</p></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 notranslate"><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> <span class="o">-</span><span class="n">q</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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<section id="examples">
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<h2><span class="section-number">29.1. </span>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
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<p>Here are examples of using alternative __remote_copy and __remote_exec scripts.</p>
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<p>All scripts from below are present in cdist sources in <cite>other/examples/remote</cite>
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directory.</p>
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<section id="ssh">
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<h3><span class="section-number">29.1.1. </span>ssh<a class="headerlink" href="#ssh" title="Permalink to this headline">¶</a></h3>
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<p>Same as cdist default.</p>
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<p><strong>copy</strong></p>
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<p>Usage: cdist config --remote-copy "/path/to/this/script" target_host</p>
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<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="c1">#echo "$@" | logger -t "cdist-ssh-copy"</span>
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scp -o <span class="nv">User</span><span class="o">=</span>root -q <span class="nv">$@</span>
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</pre></div>
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</div>
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<p><strong>exec</strong></p>
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<p>Usage: cdist config --remote-exec "/path/to/this/script" target_host</p>
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<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="c1">#echo "$@" | logger -t "cdist-ssh-exec"</span>
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ssh -o <span class="nv">User</span><span class="o">=</span>root <span class="nv">$@</span>
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</pre></div>
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</div>
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</section>
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<section id="local">
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<h3><span class="section-number">29.1.2. </span>local<a class="headerlink" href="#local" title="Permalink to this headline">¶</a></h3>
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<p>This effectively turns remote calling into local calling. Probably most useful
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for the unit testing.</p>
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<p><strong>copy</strong></p>
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<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="nv">code</span><span class="o">=</span><span class="s2">"</span><span class="k">$(</span><span class="nb">echo</span> <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span> <span class="p">|</span> sed <span class="s2">"s|\([[:space:]]\)</span><span class="nv">$__target_host</span><span class="s2">:|\1|g"</span><span class="k">)</span><span class="s2">"</span>
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cp -L <span class="nv">$code</span>
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</pre></div>
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</div>
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<p><strong>exec</strong></p>
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<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="nv">target_host</span><span class="o">=</span><span class="nv">$1</span><span class="p">;</span> <span class="nb">shift</span>
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<span class="nb">echo</span> <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span> <span class="p">|</span> /bin/sh
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</pre></div>
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</div>
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</section>
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<section id="chroot">
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<h3><span class="section-number">29.1.3. </span>chroot<a class="headerlink" href="#chroot" title="Permalink to this headline">¶</a></h3>
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<p><strong>copy</strong></p>
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<p>Usage: cdist config --remote-copy "/path/to/this/script /path/to/your/chroot" target-id</p>
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<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>log<span class="o">()</span> <span class="o">{</span>
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<span class="c1">#echo "$@" | logger -t "cdist-chroot-copy"</span>
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:
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<span class="o">}</span>
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<span class="nv">chroot</span><span class="o">=</span><span class="s2">"</span><span class="nv">$1</span><span class="s2">"</span><span class="p">;</span> <span class="nb">shift</span>
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<span class="nv">target_host</span><span class="o">=</span><span class="s2">"</span><span class="nv">$__target_host</span><span class="s2">"</span>
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<span class="c1"># replace target_host with chroot location</span>
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<span class="nv">code</span><span class="o">=</span><span class="s2">"</span><span class="k">$(</span><span class="nb">echo</span> <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span> <span class="p">|</span> sed <span class="s2">"s|</span><span class="nv">$target_host</span><span class="s2">:|</span><span class="nv">$chroot</span><span class="s2">|g"</span><span class="k">)</span><span class="s2">"</span>
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log <span class="s2">"target_host: </span><span class="nv">$target_host</span><span class="s2">"</span>
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log <span class="s2">"chroot: </span><span class="nv">$chroot</span><span class="s2">"</span>
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log <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span>
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log <span class="s2">"</span><span class="nv">$code</span><span class="s2">"</span>
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<span class="c1"># copy files into chroot</span>
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cp <span class="nv">$code</span>
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log <span class="s2">"-----"</span>
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|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
<p><strong>exec</strong></p>
|
||
|
|
<p>Usage: cdist config --remote-exec "/path/to/this/script /path/to/your/chroot" target-id</p>
|
||
|
|
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>log<span class="o">()</span> <span class="o">{</span>
|
||
|
|
<span class="c1">#echo "$@" | logger -t "cdist-chroot-exec"</span>
|
||
|
|
:
|
||
|
|
<span class="o">}</span>
|
||
|
|
|
||
|
|
<span class="nv">chroot</span><span class="o">=</span><span class="s2">"</span><span class="nv">$1</span><span class="s2">"</span><span class="p">;</span> <span class="nb">shift</span>
|
||
|
|
<span class="nv">target_host</span><span class="o">=</span><span class="s2">"</span><span class="nv">$1</span><span class="s2">"</span><span class="p">;</span> <span class="nb">shift</span>
|
||
|
|
|
||
|
|
<span class="nv">script</span><span class="o">=</span><span class="k">$(</span>mktemp <span class="s2">"</span><span class="si">${</span><span class="nv">chroot</span><span class="si">}</span><span class="s2">/tmp/chroot-</span><span class="si">${</span><span class="nv">0</span><span class="p">##*/</span><span class="si">}</span><span class="s2">.XXXXXXXXXX"</span><span class="k">)</span>
|
||
|
|
<span class="nb">trap</span> cleanup INT TERM EXIT
|
||
|
|
cleanup<span class="o">()</span> <span class="o">{</span>
|
||
|
|
<span class="o">[</span> <span class="nv">$__cdist_debug</span> <span class="o">]</span> <span class="o">||</span> rm <span class="s2">"</span><span class="nv">$script</span><span class="s2">"</span>
|
||
|
|
<span class="o">}</span>
|
||
|
|
|
||
|
|
log <span class="s2">"target_host: </span><span class="nv">$target_host</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"script: </span><span class="nv">$script</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"@: </span><span class="nv">$@</span><span class="s2">"</span>
|
||
|
|
<span class="nb">echo</span> <span class="s2">"#!/bin/sh -l"</span> > <span class="s2">"</span><span class="nv">$script</span><span class="s2">"</span>
|
||
|
|
<span class="nb">echo</span> <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span> >> <span class="s2">"</span><span class="nv">$script</span><span class="s2">"</span>
|
||
|
|
chmod +x <span class="s2">"</span><span class="nv">$script</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="nv">relative_script</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">script</span><span class="p">#</span><span class="nv">$chroot</span><span class="si">}</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"relative_script: </span><span class="nv">$relative_script</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="c1"># run in chroot</span>
|
||
|
|
chroot <span class="s2">"</span><span class="nv">$chroot</span><span class="s2">"</span> <span class="s2">"</span><span class="nv">$relative_script</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
log <span class="s2">"-----"</span>
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
</section>
|
||
|
|
<section id="rsync">
|
||
|
|
<h3><span class="section-number">29.1.4. </span>rsync<a class="headerlink" href="#rsync" title="Permalink to this headline">¶</a></h3>
|
||
|
|
<p><strong>copy</strong></p>
|
||
|
|
<p>Usage: cdist config --remote-copy /path/to/this/script target_host</p>
|
||
|
|
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="c1"># For rsync to do the right thing, the source has to end with "/" if it is</span>
|
||
|
|
<span class="c1"># a directory. The below preprocessor loop takes care of that.</span>
|
||
|
|
|
||
|
|
<span class="c1"># second last argument is the source</span>
|
||
|
|
<span class="nv">source_index</span><span class="o">=</span><span class="k">$((</span><span class="nv">$#</span><span class="o">-</span><span class="m">1</span><span class="k">))</span>
|
||
|
|
<span class="nv">index</span><span class="o">=</span><span class="m">0</span>
|
||
|
|
<span class="k">for</span> arg in <span class="nv">$@</span><span class="p">;</span> <span class="k">do</span>
|
||
|
|
<span class="k">if</span> <span class="o">[</span> <span class="nv">$index</span> -eq <span class="m">0</span> <span class="o">]</span><span class="p">;</span> <span class="k">then</span>
|
||
|
|
<span class="c1"># reset $@</span>
|
||
|
|
<span class="nb">set</span> --
|
||
|
|
<span class="k">fi</span>
|
||
|
|
<span class="nv">index</span><span class="o">=</span><span class="k">$((</span><span class="nv">index</span><span class="o">+=</span><span class="m">1</span><span class="k">))</span>
|
||
|
|
<span class="k">if</span> <span class="o">[</span> <span class="nv">$index</span> -eq <span class="nv">$source_index</span> -a -d <span class="s2">"</span><span class="nv">$arg</span><span class="s2">"</span> <span class="o">]</span><span class="p">;</span> <span class="k">then</span>
|
||
|
|
<span class="nv">arg</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">arg</span><span class="p">%/</span><span class="si">}</span><span class="s2">/"</span>
|
||
|
|
<span class="k">fi</span>
|
||
|
|
<span class="nb">set</span> -- <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span> <span class="s2">"</span><span class="nv">$arg</span><span class="s2">"</span>
|
||
|
|
<span class="k">done</span>
|
||
|
|
|
||
|
|
rsync --backup --suffix<span class="o">=</span>~cdist -e <span class="s1">'ssh -o User=root'</span> <span class="nv">$@</span>
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
</section>
|
||
|
|
<section id="schroot">
|
||
|
|
<h3><span class="section-number">29.1.5. </span>schroot<a class="headerlink" href="#schroot" title="Permalink to this headline">¶</a></h3>
|
||
|
|
<p>__remote_copy and __remote_exec scripts to run cdist against a chroot on the
|
||
|
|
target host over ssh.</p>
|
||
|
|
<p><strong>copy</strong></p>
|
||
|
|
<p>Usage: cdist config --remote-copy "/path/to/this/script schroot-chroot-name" target_host</p>
|
||
|
|
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>log<span class="o">()</span> <span class="o">{</span>
|
||
|
|
<span class="c1">#echo "$@" | logger -t "cdist-schroot-copy"</span>
|
||
|
|
:
|
||
|
|
<span class="o">}</span>
|
||
|
|
|
||
|
|
<span class="nv">chroot_name</span><span class="o">=</span><span class="s2">"</span><span class="nv">$1</span><span class="s2">"</span><span class="p">;</span> <span class="nb">shift</span>
|
||
|
|
<span class="nv">target_host</span><span class="o">=</span><span class="s2">"</span><span class="nv">$__target_host</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="c1"># get directory for given chroot_name</span>
|
||
|
|
<span class="nv">chroot</span><span class="o">=</span><span class="s2">"</span><span class="k">$(</span>ssh -o <span class="nv">User</span><span class="o">=</span>root -q <span class="nv">$target_host</span> schroot -c <span class="nv">$chroot_name</span> --config <span class="p">|</span> awk -F <span class="o">=</span> <span class="s1">'/directory=/ {print $2}'</span><span class="k">)</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="c1"># prefix destination with chroot</span>
|
||
|
|
<span class="nv">code</span><span class="o">=</span><span class="s2">"</span><span class="k">$(</span><span class="nb">echo</span> <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span> <span class="p">|</span> sed <span class="s2">"s|</span><span class="nv">$target_host</span><span class="s2">:|</span><span class="nv">$target_host</span><span class="s2">:</span><span class="nv">$chroot</span><span class="s2">|g"</span><span class="k">)</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
log <span class="s2">"target_host: </span><span class="nv">$target_host</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"chroot_name: </span><span class="nv">$chroot_name</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"chroot: </span><span class="nv">$chroot</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"@: </span><span class="nv">$@</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"code: </span><span class="nv">$code</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="c1"># copy files into remote chroot</span>
|
||
|
|
scp -o <span class="nv">User</span><span class="o">=</span>root -q <span class="nv">$code</span>
|
||
|
|
|
||
|
|
log <span class="s2">"-----"</span>
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
<p><strong>exec</strong></p>
|
||
|
|
<p>Usage: cdist config --remote-exec "/path/to/this/script schroot-chroot-name" target_host</p>
|
||
|
|
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>log<span class="o">()</span> <span class="o">{</span>
|
||
|
|
<span class="c1">#echo "$@" | logger -t "cdist-schroot-exec"</span>
|
||
|
|
:
|
||
|
|
<span class="o">}</span>
|
||
|
|
|
||
|
|
<span class="nv">chroot_name</span><span class="o">=</span><span class="s2">"</span><span class="nv">$1</span><span class="s2">"</span><span class="p">;</span> <span class="nb">shift</span>
|
||
|
|
<span class="nv">target_host</span><span class="o">=</span><span class="s2">"</span><span class="nv">$1</span><span class="s2">"</span><span class="p">;</span> <span class="nb">shift</span>
|
||
|
|
|
||
|
|
<span class="nv">code</span><span class="o">=</span><span class="s2">"ssh -o User=root -q </span><span class="nv">$target_host</span><span class="s2"> schroot -c </span><span class="nv">$chroot_name</span><span class="s2"> -- </span><span class="nv">$@</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
log <span class="s2">"target_host: </span><span class="nv">$target_host</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"chroot_name: </span><span class="nv">$chroot_name</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"@: </span><span class="nv">$@</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"code: </span><span class="nv">$code</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="c1"># run in remote chroot</span>
|
||
|
|
<span class="nv">$code</span>
|
||
|
|
|
||
|
|
log <span class="s2">"-----"</span>
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
</section>
|
||
|
|
<section id="schroot-uri">
|
||
|
|
<h3><span class="section-number">29.1.6. </span>schroot-uri<a class="headerlink" href="#schroot-uri" title="Permalink to this headline">¶</a></h3>
|
||
|
|
<p>__remote_exec/__remote_copy script to run cdist against a schroot target URI.</p>
|
||
|
|
<p>Usage:</p>
|
||
|
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">cdist</span> <span class="n">config</span> \
|
||
|
|
<span class="o">--</span><span class="n">remote</span><span class="o">-</span><span class="n">exec</span> <span class="s2">"/path/to/this/script exec"</span> \
|
||
|
|
<span class="o">--</span><span class="n">remote</span><span class="o">-</span><span class="n">copy</span> <span class="s2">"/path/to/this/script copy"</span> \
|
||
|
|
<span class="n">target_uri</span>
|
||
|
|
|
||
|
|
<span class="c1"># target_uri examples:</span>
|
||
|
|
<span class="n">schroot</span><span class="p">:</span><span class="o">///</span><span class="n">chroot</span><span class="o">-</span><span class="n">name</span>
|
||
|
|
<span class="n">schroot</span><span class="p">:</span><span class="o">//</span><span class="n">foo</span><span class="o">.</span><span class="n">ethz</span><span class="o">.</span><span class="n">ch</span><span class="o">/</span><span class="n">chroot</span><span class="o">-</span><span class="n">name</span>
|
||
|
|
<span class="n">schroot</span><span class="p">:</span><span class="o">//</span><span class="n">user</span><span class="o">-</span><span class="n">name</span><span class="nd">@foo</span><span class="o">.</span><span class="n">ethz</span><span class="o">.</span><span class="n">ch</span><span class="o">/</span><span class="n">chroot</span><span class="o">-</span><span class="n">name</span>
|
||
|
|
|
||
|
|
<span class="c1"># and how to match them in .../manifest/init</span>
|
||
|
|
<span class="n">case</span> <span class="s2">"$target_host"</span> <span class="ow">in</span>
|
||
|
|
<span class="n">schroot</span><span class="p">:</span><span class="o">//*</span><span class="p">)</span>
|
||
|
|
<span class="c1"># any schroot</span>
|
||
|
|
<span class="p">;;</span>
|
||
|
|
<span class="n">schroot</span><span class="p">:</span><span class="o">//</span><span class="n">foo</span><span class="o">.</span><span class="n">ethz</span><span class="o">.</span><span class="n">ch</span><span class="o">/*</span><span class="p">)</span>
|
||
|
|
<span class="c1"># any schroot on specific host</span>
|
||
|
|
<span class="p">;;</span>
|
||
|
|
<span class="n">schroot</span><span class="p">:</span><span class="o">//</span><span class="n">foo</span><span class="o">.</span><span class="n">ethz</span><span class="o">.</span><span class="n">ch</span><span class="o">/</span><span class="n">chroot</span><span class="o">-</span><span class="n">name</span><span class="p">)</span>
|
||
|
|
<span class="c1"># specific schroot on specific host</span>
|
||
|
|
<span class="p">;;</span>
|
||
|
|
<span class="n">schroot</span><span class="p">:</span><span class="o">///</span><span class="n">chroot</span><span class="o">-</span><span class="n">name</span><span class="p">)</span>
|
||
|
|
<span class="c1"># specific schroot on localhost</span>
|
||
|
|
<span class="p">;;</span>
|
||
|
|
<span class="n">esac</span>
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
<p><strong>copy/exec</strong></p>
|
||
|
|
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="nv">my_name</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">0</span><span class="p">##*/</span><span class="si">}</span><span class="s2">"</span>
|
||
|
|
<span class="nv">mode</span><span class="o">=</span><span class="s2">"</span><span class="nv">$1</span><span class="s2">"</span><span class="p">;</span> <span class="nb">shift</span>
|
||
|
|
|
||
|
|
log<span class="o">()</span> <span class="o">{</span>
|
||
|
|
<span class="c1"># uncomment me for debugging</span>
|
||
|
|
<span class="c1">#echo "$@" | logger -t "cdist-$my_name-$mode"</span>
|
||
|
|
:
|
||
|
|
<span class="o">}</span>
|
||
|
|
|
||
|
|
die<span class="o">()</span> <span class="o">{</span>
|
||
|
|
<span class="nb">echo</span> <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span> ><span class="p">&</span><span class="m">2</span>
|
||
|
|
<span class="nb">exit</span> <span class="m">1</span>
|
||
|
|
<span class="o">}</span>
|
||
|
|
|
||
|
|
|
||
|
|
<span class="nv">uri</span><span class="o">=</span><span class="s2">"</span><span class="nv">$__target_host</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="nv">scheme</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">uri</span><span class="p">%%:*</span><span class="si">}</span><span class="s2">"</span><span class="p">;</span> <span class="nv">rest</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">uri</span><span class="p">#</span><span class="nv">$scheme</span><span class="p">:</span><span class="si">}</span><span class="s2">"</span><span class="p">;</span> <span class="nv">rest</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">rest</span><span class="p">#//</span><span class="si">}</span><span class="s2">"</span>
|
||
|
|
<span class="nv">authority</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">rest</span><span class="p">%%/*</span><span class="si">}</span><span class="s2">"</span><span class="p">;</span> <span class="nv">rest</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">rest</span><span class="p">#</span><span class="nv">$authority</span><span class="si">}</span><span class="s2">"</span>
|
||
|
|
<span class="nv">path</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">rest</span><span class="p">%</span><span class="se">\?</span><span class="p">*</span><span class="si">}</span><span class="s2">"</span><span class="p">;</span> <span class="nv">rest</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">rest</span><span class="p">#</span><span class="nv">$path</span><span class="si">}</span><span class="s2">"</span>
|
||
|
|
<span class="nv">schroot_name</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">path</span><span class="p">#/</span><span class="si">}</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="o">[</span> <span class="s2">"</span><span class="nv">$scheme</span><span class="s2">"</span> <span class="o">=</span> <span class="s2">"schroot"</span> <span class="o">]</span> <span class="o">||</span> die <span class="s2">"Failed to parse scheme from __target_host (</span><span class="nv">$__target_host</span><span class="s2">). Expected 'schroot', got '</span><span class="nv">$scheme</span><span class="s2">'"</span>
|
||
|
|
<span class="o">[</span> -n <span class="s2">"</span><span class="nv">$schroot_name</span><span class="s2">"</span> <span class="o">]</span> <span class="o">||</span> die <span class="s2">"Failed to parse schroot name from __target_host: </span><span class="nv">$__target_host</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="k">case</span> <span class="s2">"</span><span class="nv">$authority</span><span class="s2">"</span> in
|
||
|
|
<span class="s1">''</span><span class="o">)</span>
|
||
|
|
<span class="c1"># authority is empty, neither user nor host given</span>
|
||
|
|
<span class="nv">user</span><span class="o">=</span><span class="s2">""</span>
|
||
|
|
<span class="nv">host</span><span class="o">=</span><span class="s2">""</span>
|
||
|
|
<span class="p">;;</span>
|
||
|
|
*@*<span class="o">)</span>
|
||
|
|
<span class="c1"># authority contains @, take user from authority</span>
|
||
|
|
<span class="nv">user</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">authority</span><span class="p">%@*</span><span class="si">}</span><span class="s2">"</span>
|
||
|
|
<span class="nv">host</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">authority</span><span class="p">#*@</span><span class="si">}</span><span class="s2">"</span>
|
||
|
|
<span class="p">;;</span>
|
||
|
|
*<span class="o">)</span>
|
||
|
|
<span class="c1"># no user in authority, default to root</span>
|
||
|
|
<span class="nv">user</span><span class="o">=</span><span class="s2">"root"</span>
|
||
|
|
<span class="nv">host</span><span class="o">=</span><span class="s2">"</span><span class="nv">$authority</span><span class="s2">"</span>
|
||
|
|
<span class="p">;;</span>
|
||
|
|
<span class="k">esac</span>
|
||
|
|
|
||
|
|
log <span class="s2">"mode: </span><span class="nv">$mode</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"@: </span><span class="nv">$@</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"uri: </span><span class="nv">$uri</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"scheme: </span><span class="nv">$scheme</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"authority: </span><span class="nv">$authority</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"user: </span><span class="nv">$user</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"host: </span><span class="nv">$host</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"path: </span><span class="nv">$path</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"schroot_name: </span><span class="nv">$schroot_name</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="nv">exec_prefix</span><span class="o">=</span><span class="s2">""</span>
|
||
|
|
<span class="nv">copy_prefix</span><span class="o">=</span><span class="s2">""</span>
|
||
|
|
<span class="k">if</span> <span class="o">[</span> -n <span class="s2">"</span><span class="nv">$host</span><span class="s2">"</span> <span class="o">]</span><span class="p">;</span> <span class="k">then</span>
|
||
|
|
<span class="c1"># we are working on a remote host</span>
|
||
|
|
<span class="nv">exec_prefix</span><span class="o">=</span><span class="s2">"ssh -o User=</span><span class="nv">$user</span><span class="s2"> -q </span><span class="nv">$host</span><span class="s2">"</span>
|
||
|
|
<span class="nv">copy_prefix</span><span class="o">=</span><span class="s2">"scp -o User=</span><span class="nv">$user</span><span class="s2"> -q"</span>
|
||
|
|
<span class="nv">copy_destination_prefix</span><span class="o">=</span><span class="s2">"</span><span class="nv">$host</span><span class="s2">:"</span>
|
||
|
|
<span class="k">else</span>
|
||
|
|
<span class="c1"># working on local machine</span>
|
||
|
|
<span class="nv">copy_prefix</span><span class="o">=</span><span class="s2">"cp"</span>
|
||
|
|
<span class="nv">copy_destination_prefix</span><span class="o">=</span><span class="s2">""</span>
|
||
|
|
<span class="k">fi</span>
|
||
|
|
log <span class="s2">"exec_prefix: </span><span class="nv">$exec_prefix</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"copy_prefix: </span><span class="nv">$copy_prefix</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"copy_destination_prefix: </span><span class="nv">$copy_destination_prefix</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="k">case</span> <span class="s2">"</span><span class="nv">$mode</span><span class="s2">"</span> in
|
||
|
|
<span class="nb">exec</span><span class="o">)</span>
|
||
|
|
<span class="c1"># In exec mode the first argument is the __target_host which we already got from env. Get rid of it.</span>
|
||
|
|
<span class="nb">shift</span>
|
||
|
|
<span class="nv">code</span><span class="o">=</span><span class="s2">"</span><span class="nv">$exec_prefix</span><span class="s2"> schroot -c </span><span class="nv">$schroot_name</span><span class="s2"> -- sh -c '</span><span class="nv">$@</span><span class="s2">'"</span>
|
||
|
|
<span class="p">;;</span>
|
||
|
|
copy<span class="o">)</span>
|
||
|
|
<span class="c1"># get directory for given chroot_name</span>
|
||
|
|
<span class="nv">schroot_directory</span><span class="o">=</span><span class="s2">"</span><span class="k">$(</span><span class="nv">$exec_prefix</span> schroot -c <span class="nv">$schroot_name</span> --config <span class="p">|</span> awk -F <span class="o">=</span> <span class="s1">'/directory=/ {print $2}'</span><span class="k">)</span><span class="s2">"</span>
|
||
|
|
<span class="o">[</span> -n <span class="s2">"</span><span class="nv">$schroot_directory</span><span class="s2">"</span> <span class="o">]</span> <span class="o">||</span> die <span class="s2">"Failed to retreive schroot directory for schroot: </span><span class="nv">$schroot_name</span><span class="s2">"</span>
|
||
|
|
log <span class="s2">"schroot_directory: </span><span class="nv">$schroot_directory</span><span class="s2">"</span>
|
||
|
|
<span class="c1"># prefix destination with chroot</span>
|
||
|
|
<span class="nv">code</span><span class="o">=</span><span class="s2">"</span><span class="nv">$copy_prefix</span><span class="s2"> </span><span class="k">$(</span><span class="nb">echo</span> <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span> <span class="p">|</span> sed <span class="s2">"s|</span><span class="nv">$uri</span><span class="s2">:|</span><span class="si">${</span><span class="nv">copy_destination_prefix</span><span class="si">}${</span><span class="nv">schroot_directory</span><span class="si">}</span><span class="s2">|g"</span><span class="k">)</span><span class="s2">"</span>
|
||
|
|
<span class="p">;;</span>
|
||
|
|
*<span class="o">)</span> die <span class="s2">"Unknown mode: </span><span class="nv">$mode</span><span class="s2">"</span><span class="p">;;</span>
|
||
|
|
<span class="k">esac</span>
|
||
|
|
|
||
|
|
log <span class="s2">"code: </span><span class="nv">$code</span><span class="s2">"</span>
|
||
|
|
|
||
|
|
<span class="c1"># Run the code</span>
|
||
|
|
<span class="nv">$code</span>
|
||
|
|
|
||
|
|
log <span class="s2">"-----"</span>
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
</section>
|
||
|
|
<section id="sudo">
|
||
|
|
<h3><span class="section-number">29.1.7. </span>sudo<a class="headerlink" href="#sudo" title="Permalink to this headline">¶</a></h3>
|
||
|
|
<p><strong>copy</strong></p>
|
||
|
|
<p>Use rsync over ssh to copy files. Uses the "--rsync-path" option
|
||
|
|
to run the remote rsync instance with sudo.</p>
|
||
|
|
<p>This command assumes your ssh configuration is already set up in ~/.ssh/config.</p>
|
||
|
|
<p>Usage: cdist config --remote-copy /path/to/this/script target_host</p>
|
||
|
|
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="c1"># For rsync to do the right thing, the source has to end with "/" if it is</span>
|
||
|
|
<span class="c1"># a directory. The below preprocessor loop takes care of that.</span>
|
||
|
|
|
||
|
|
<span class="c1"># second last argument is the source</span>
|
||
|
|
<span class="nv">source_index</span><span class="o">=</span><span class="k">$((</span><span class="nv">$#</span><span class="o">-</span><span class="m">1</span><span class="k">))</span>
|
||
|
|
<span class="nv">index</span><span class="o">=</span><span class="m">0</span>
|
||
|
|
<span class="k">for</span> arg in <span class="nv">$@</span><span class="p">;</span> <span class="k">do</span>
|
||
|
|
<span class="k">if</span> <span class="o">[</span> <span class="nv">$index</span> -eq <span class="m">0</span> <span class="o">]</span><span class="p">;</span> <span class="k">then</span>
|
||
|
|
<span class="c1"># reset $@</span>
|
||
|
|
<span class="nb">set</span> --
|
||
|
|
<span class="k">fi</span>
|
||
|
|
<span class="nv">index</span><span class="o">=</span><span class="k">$((</span><span class="nv">index</span><span class="o">+=</span><span class="m">1</span><span class="k">))</span>
|
||
|
|
<span class="k">if</span> <span class="o">[</span> <span class="nv">$index</span> -eq <span class="nv">$source_index</span> -a -d <span class="s2">"</span><span class="nv">$arg</span><span class="s2">"</span> <span class="o">]</span><span class="p">;</span> <span class="k">then</span>
|
||
|
|
<span class="nv">arg</span><span class="o">=</span><span class="s2">"</span><span class="si">${</span><span class="nv">arg</span><span class="p">%/</span><span class="si">}</span><span class="s2">/"</span>
|
||
|
|
<span class="k">fi</span>
|
||
|
|
<span class="nb">set</span> -- <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span> <span class="s2">"</span><span class="nv">$arg</span><span class="s2">"</span>
|
||
|
|
<span class="k">done</span>
|
||
|
|
|
||
|
|
rsync --copy-links --rsync-path<span class="o">=</span><span class="s2">"sudo rsync"</span> -e <span class="s1">'ssh'</span> <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span>
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
<p><strong>exec</strong></p>
|
||
|
|
<p>Prefixes all remote commands with sudo.</p>
|
||
|
|
<p>This command assumes your ssh configuration is already set up in ~/.ssh/config.</p>
|
||
|
|
<p>Usage: cdist config --remote-exec "/path/to/this/script" target_host</p>
|
||
|
|
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="nv">host</span><span class="o">=</span><span class="s2">"</span><span class="nv">$1</span><span class="s2">"</span><span class="p">;</span> <span class="nb">shift</span>
|
||
|
|
ssh -q <span class="s2">"</span><span class="nv">$host</span><span class="s2">"</span> sudo sh -c <span class="se">\"</span><span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span><span class="se">\"</span>
|
||
|
|
</pre></div>
|
||
|
|
</div>
|
||
|
|
</section>
|
||
|
|
</section>
|
||
|
|
</section>
|
||
|
|
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
<footer>
|
||
|
|
|
||
|
|
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
|
||
|
|
|
||
|
|
<a href="cdist-hacker.html" class="btn btn-neutral float-right" title="30. Hacking" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a>
|
||
|
|
|
||
|
|
|
||
|
|
<a href="cdist-saving-output-streams.html" class="btn btn-neutral float-left" title="28. Saving output streams" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
<hr/>
|
||
|
|
|
||
|
|
<div role="contentinfo">
|
||
|
|
<p>
|
||
|
|
© Copyright ungleich GmbH 2020
|
||
|
|
|
||
|
|
</p>
|
||
|
|
</div>
|
||
|
|
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|
||
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|
||
|
|
</footer>
|
||
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|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
</div>
|
||
|
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|
||
|
|
|
||
|
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|
||
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<script type="text/javascript">
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|
||
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|
||
|
|
</body>
|
||
|
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</html>
|