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<li class="toctree-l1"><a class="reference internal" href="docker_api_connection.html">community.docker.docker_api connection – Run tasks in docker containers</a></li>
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<li class="toctree-l1 current"><a class="current reference internal" href="#">community.docker.nsenter connection – execute on host running controller container</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="#parameters">Parameters</a></li>
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<a href="https://github.com/ansible-collections/community.docker/edit/main/plugins/connection/nsenter.py?description=%23%23%23%23%23%20SUMMARY%0A%3C!—%20Your%20description%20here%20–%3E%0A%0A%0A%23%23%23%23%23%20ISSUE%20TYPE%0A-%20Docs%20Pull%20Request%0A%0A%2Blabel:%20docsite_pr" class="fa fa-github"> Edit on GitHub</a>
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<span class="target" id="ansible-collections-community-docker-nsenter-connection"></span><section id="community-docker-nsenter-connection-execute-on-host-running-controller-container">
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<h1>community.docker.nsenter connection – execute on host running controller container<a class="headerlink" href="#community-docker-nsenter-connection-execute-on-host-running-controller-container" title="Link to this heading"></a></h1>
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<div class="admonition note">
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<p class="admonition-title">Note</p>
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<p>This connection plugin is part of the <a class="reference external" href="https://galaxy.ansible.com/ui/repo/published/community/docker/">community.docker collection</a> (version 4.8.4).</p>
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<p>It is not included in <code class="docutils literal notranslate"><span class="pre">ansible-core</span></code>.
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To check whether it is installed, run <code class="code docutils literal notranslate"><span class="pre">ansible-galaxy</span> <span class="pre">collection</span> <span class="pre">list</span></code>.</p>
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<p>To install it, use: <code class="code docutils literal notranslate"><span class="pre">ansible-galaxy</span> <span class="pre">collection</span> <span class="pre">install</span> <span class="pre">community.docker</span></code>.</p>
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<p>To use it in a playbook, specify: <code class="code docutils literal notranslate"><span class="pre">community.docker.nsenter</span></code>.</p>
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</div>
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<p class="ansible-version-added">New in community.docker 1.9.0</p>
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<nav class="contents local" id="contents">
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<ul class="simple">
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<li><p><a class="reference internal" href="#synopsis" id="id1">Synopsis</a></p></li>
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<li><p><a class="reference internal" href="#parameters" id="id2">Parameters</a></p></li>
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<li><p><a class="reference internal" href="#notes" id="id3">Notes</a></p></li>
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</ul>
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</nav>
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<section id="synopsis">
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<h2><a class="toc-backref" href="#id1" role="doc-backlink">Synopsis</a><a class="headerlink" href="#synopsis" title="Link to this heading"></a></h2>
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<ul class="simple">
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<li><p>This connection plugin allows Ansible, running in a privileged container, to execute tasks on the container host instead of in the container itself.</p></li>
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<li><p>This is useful for running Ansible in a pull model, while still keeping the Ansible control node containerized.</p></li>
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<li><p>It relies on having privileged access to run <code class="docutils literal notranslate"><span class="pre">nsenter</span></code> in the host’s PID namespace, allowing it to enter the namespaces of the provided PID (default PID 1, or init/systemd).</p></li>
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</ul>
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</section>
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<section id="parameters">
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<h2><a class="toc-backref" href="#id2" role="doc-backlink">Parameters</a><a class="headerlink" href="#parameters" title="Link to this heading"></a></h2>
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<table class="longtable ansible-option-table docutils align-default" style="width: 100%">
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<thead>
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<tr class="row-odd"><th class="head"><p>Parameter</p></th>
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<th class="head"><p>Comments</p></th>
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</tr>
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</thead>
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<tbody>
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<tr class="row-even"><td><div class="ansible-option-cell">
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<div class="ansibleOptionAnchor" id="parameter-nsenter_pid"></div><p class="ansible-option-title" id="ansible-collections-community-docker-nsenter-connection-parameter-nsenter-pid"><strong>nsenter_pid</strong></p>
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<a class="ansibleOptionLink" href="#parameter-nsenter_pid" title="Permalink to this option"></a><p class="ansible-option-type-line"><span class="ansible-option-type">integer</span></p>
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</div></td>
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<td><div class="ansible-option-cell"><p>PID to attach with using nsenter.</p>
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<p>The default should be fine unless you are attaching as a non-root user.</p>
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<p class="ansible-option-line"><strong class="ansible-option-default-bold">Default:</strong> <code class="ansible-option-default docutils literal notranslate"><span class="pre">1</span></code></p>
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<p class="ansible-option-line"><strong class="ansible-option-configuration">Configuration:</strong></p>
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<ul>
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<li><p>INI entry:</p>
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<div class="highlight-ini notranslate"><div class="highlight"><pre><span></span><span class="k">[nsenter_connection]</span>
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<span class="na">nsenter_pid</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">1</span>
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</pre></div>
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</div>
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</li>
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<li><p>Environment variable: <span class="target" id="index-0"></span><a class="reference internal" href="environment_variables.html#envvar-ANSIBLE_NSENTER_PID"><code class="xref std std-envvar docutils literal notranslate"><span class="pre">ANSIBLE_NSENTER_PID</span></code></a></p></li>
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<li><p>Variable: ansible_nsenter_pid</p></li>
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</ul>
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</div></td>
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</tr>
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</tbody>
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</table>
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<div class="admonition note">
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<p class="admonition-title">Note</p>
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<p>Configuration entries listed above for each entry type (Ansible variable, environment variable, and so on) have a low to high priority order.
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For example, a variable that is lower in the list will override a variable that is higher up.
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The entry types are also ordered by precedence from low to high priority order.
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For example, an ansible.cfg entry (further up in the list) is overwritten by an Ansible variable (further down in the list).</p>
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</div>
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||
</section>
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||
<section id="notes">
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||
<h2><a class="toc-backref" href="#id3" role="doc-backlink">Notes</a><a class="headerlink" href="#notes" title="Link to this heading"></a></h2>
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<div class="admonition note">
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<p class="admonition-title">Note</p>
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<ul class="simple">
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<li><p>The remote user is ignored; this plugin always runs as root.</p></li>
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<li><p>This plugin requires the Ansible controller container to be launched in the following way: (1) The container image contains the <code class="docutils literal notranslate"><span class="pre">nsenter</span></code> program; (2) The container is launched in privileged mode; (3) The container is launched in the host’s PID namespace (<code class="docutils literal notranslate"><span class="pre">--pid</span> <span class="pre">host</span></code>).</p></li>
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</ul>
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</div>
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<section id="authors">
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<h3>Authors<a class="headerlink" href="#authors" title="Link to this heading"></a></h3>
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<ul class="simple">
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<li><p>Jeff Goldschrafe (@jgoldschrafe)</p></li>
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</ul>
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</section>
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<section id="collection-links">
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<h3>Collection links<a class="headerlink" href="#collection-links" title="Link to this heading"></a></h3>
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<ul class="ansible-links">
|
||
<li><span><a aria-role="button" class="ansible-link reference external" href="https://github.com/ansible-collections/community.docker/issues" rel="noopener external" target="_blank">Issue Tracker</a></span></li>
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||
<li><span><a aria-role="button" class="ansible-link reference external" href="https://github.com/ansible-collections/community.docker" rel="noopener external" target="_blank">Repository (Sources)</a></span></li>
|
||
<li><span><a aria-role="button" class="ansible-link reference external" href="https://forum.ansible.com/tags/c/help/6/none/docker" rel="noopener external" target="_blank">Ask for help (Docker)</a></span></li>
|
||
<li><span><a aria-role="button" class="ansible-link reference external" href="https://forum.ansible.com/tags/c/help/6/none/docker-compose" rel="noopener external" target="_blank">Ask for help (Docker Compose)</a></span></li>
|
||
<li><span><a aria-role="button" class="ansible-link reference external" href="https://forum.ansible.com/tags/c/help/6/none/docker-swarm" rel="noopener external" target="_blank">Ask for help (Docker Swarm)</a></span></li>
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