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HTML
547 lines
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<title>lorax-composer — Lorax 29.1 documentation</title>
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29.1
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<li class="toctree-l1"><a class="reference internal" href="intro.html">Introduction to Lorax</a></li>
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<li class="toctree-l1"><a class="reference internal" href="intro.html#before-lorax">Before Lorax</a></li>
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<li class="toctree-l1"><a class="reference internal" href="lorax.html">Lorax</a></li>
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<li class="toctree-l1 current"><a class="current reference internal" href="#">lorax-composer</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="#installation">Installation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#lorax-composer-cmdline-arguments">lorax-composer cmdline arguments</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="#Positional Arguments">Positional Arguments</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#Named Arguments">Named Arguments</a></li>
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</ul>
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<li class="toctree-l2"><a class="reference internal" href="#how-it-works">How it Works</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#composing-images">Composing Images</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#blueprints">Blueprints</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="#packages-and-modules">[[packages]] and [[modules]]</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#customizations">Customizations</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="#customizations-sshkey">[[customizations.sshkey]]</a></li>
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<li class="toctree-l4"><a class="reference internal" href="#customizations-user">[[customizations.user]]</a></li>
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<li class="toctree-l4"><a class="reference internal" href="#customizations-group">[[customizations.group]]</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#adding-output-types">Adding Output Types</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="#example-add-partitioned-disk-support">Example: Add partitioned disk support</a></li>
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<li class="toctree-l1"><a class="reference internal" href="product-images.html">Product and Updates Images</a></li>
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<li class="toctree-l1"><a class="reference internal" href="modules.html">src</a></li>
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<div class="section" id="lorax-composer">
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<h1>lorax-composer<a class="headerlink" href="#lorax-composer" title="Permalink to this headline">¶</a></h1>
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<table class="docutils field-list" frame="void" rules="none">
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<col class="field-body" />
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<tbody valign="top">
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<tr class="field-odd field"><th class="field-name">Authors:</th><td class="field-body">Brian C. Lane <<a class="reference external" href="mailto:bcl%40redhat.com">bcl<span>@</span>redhat<span>.</span>com</a>></td>
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</tr>
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</table>
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<p><code class="docutils literal notranslate"><span class="pre">lorax-composer</span></code> is an API server that allows you to build disk images using
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<a class="reference internal" href="#blueprints">Blueprints</a> to describe the package versions to be installed into the image.
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It is compatible with the Weldr project’s bdcs-api REST protocol. More
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information on Weldr can be found <a class="reference external" href="http://www.weldr.io">on the Weldr blog</a>.</p>
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<p>Behind the scenes it uses <a class="reference external" href="livemedia-creator.html">livemedia-creator</a> and
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<a class="reference external" href="https://anaconda-installer.readthedocs.io/en/latest/">Anaconda</a> to handle the
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installation and configuration of the images.</p>
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<div class="section" id="installation">
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<h2>Installation<a class="headerlink" href="#installation" title="Permalink to this headline">¶</a></h2>
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<p>The best way to install <code class="docutils literal notranslate"><span class="pre">lorax-composer</span></code> is to use <code class="docutils literal notranslate"><span class="pre">sudo</span> <span class="pre">dnf</span> <span class="pre">install</span>
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<span class="pre">lorax-composer</span> <span class="pre">composer-cli</span></code>, this will setup the weldr user and install the
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systemd socket activation service. You will then need to enable it with <code class="docutils literal notranslate"><span class="pre">sudo</span>
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<span class="pre">systemctl</span> <span class="pre">enable</span> <span class="pre">lorax-composer.socket</span>
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<span class="pre">&&</span> <span class="pre">sudo</span>
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<span class="pre">systemctl</span> <span class="pre">start</span> <span class="pre">lorax-composer.socket</span></code>. This will leave the server off until
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the first request is made. Systemd will then launch the server and it will
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remain running until the system is rebooted.</p>
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</div>
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<div class="section" id="quickstart">
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<h2>Quickstart<a class="headerlink" href="#quickstart" title="Permalink to this headline">¶</a></h2>
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<ol class="arabic simple">
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<li>Create a <code class="docutils literal notranslate"><span class="pre">weldr</span></code> user and group by running <code class="docutils literal notranslate"><span class="pre">useradd</span> <span class="pre">weldr</span></code></li>
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<li>Remove any pre-existing socket directory with <code class="docutils literal notranslate"><span class="pre">rm</span> <span class="pre">-rf</span> <span class="pre">/run/weldr/</span></code>
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A new directory with correct permissions will be created the first time the server runs.</li>
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<li>Enable the socket activation with <code class="docutils literal notranslate"><span class="pre">systemctl</span> <span class="pre">enable</span> <span class="pre">lorax-composer.socket</span>
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<span class="pre">&&</span> <span class="pre">sudo</span>
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<span class="pre">systemctl</span> <span class="pre">start</span> <span class="pre">lorax-composer.socket</span></code> or
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run it directly with <code class="docutils literal notranslate"><span class="pre">lorax-composer</span> <span class="pre">/path/to/blueprints/</span></code></li>
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</ol>
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<p>The <code class="docutils literal notranslate"><span class="pre">/path/to/blueprints/</span></code> directory is where the blueprints’ git repo will
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be created, and all the blueprints created with the <code class="docutils literal notranslate"><span class="pre">/api/v0/blueprints/new</span></code>
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route will be stored. If there are blueprint <code class="docutils literal notranslate"><span class="pre">.toml</span></code> files in the top level
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of the directory they will be imported into the blueprint git storage when
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<code class="docutils literal notranslate"><span class="pre">lorax-composer</span></code> starts.</p>
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</div>
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<div class="section" id="logs">
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<h2>Logs<a class="headerlink" href="#logs" title="Permalink to this headline">¶</a></h2>
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<p>Logs are stored under <code class="docutils literal notranslate"><span class="pre">/var/log/lorax-composer/</span></code> and include all console
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messages as well as extra debugging info and API requests.</p>
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</div>
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<div class="section" id="security">
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<h2>Security<a class="headerlink" href="#security" title="Permalink to this headline">¶</a></h2>
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<p>Some security related issues that you should be aware of before running <code class="docutils literal notranslate"><span class="pre">lorax-composer</span></code>:</p>
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<ul class="simple">
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<li>One of the API server threads needs to retain root privileges in order to run Anaconda.</li>
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<li>SELinux must be set to Permissive or disabled to allow <code class="docutils literal notranslate"><span class="pre">livemedia-creator</span></code> to run Anaconda.</li>
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<li>Only allow authorized users access to the <code class="docutils literal notranslate"><span class="pre">weldr</span></code> group and socket.</li>
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</ul>
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<p>Since Anaconda kickstarts are used there is the possibility that a user could
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inject commands into a blueprint that would result in the kickstart executing
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arbitrary code on the host. Only authorized users should be allowed to build
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images using <code class="docutils literal notranslate"><span class="pre">lorax-composer</span></code>.</p>
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</div>
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<div class="section" id="lorax-composer-cmdline-arguments">
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<h2>lorax-composer cmdline arguments<a class="headerlink" href="#lorax-composer-cmdline-arguments" title="Permalink to this headline">¶</a></h2>
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<p>Lorax Composer API Server</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">usage</span><span class="p">:</span> <span class="n">lorax</span><span class="o">-</span><span class="n">composer</span> <span class="p">[</span><span class="o">-</span><span class="n">h</span><span class="p">]</span> <span class="p">[</span><span class="o">--</span><span class="n">socket</span> <span class="n">SOCKET</span><span class="p">]</span> <span class="p">[</span><span class="o">--</span><span class="n">user</span> <span class="n">USER</span><span class="p">]</span> <span class="p">[</span><span class="o">--</span><span class="n">group</span> <span class="n">GROUP</span><span class="p">]</span>
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<span class="p">[</span><span class="o">--</span><span class="n">log</span> <span class="n">LOG</span><span class="p">]</span> <span class="p">[</span><span class="o">--</span><span class="n">mockfiles</span> <span class="n">MOCKFILES</span><span class="p">]</span>
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<span class="p">[</span><span class="o">--</span><span class="n">sharedir</span> <span class="n">SHAREDIR</span><span class="p">]</span> <span class="p">[</span><span class="o">-</span><span class="n">V</span><span class="p">]</span> <span class="p">[</span><span class="o">-</span><span class="n">c</span> <span class="n">CONFIG</span><span class="p">]</span>
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<span class="p">[</span><span class="o">--</span><span class="n">releasever</span> <span class="n">STRING</span><span class="p">]</span> <span class="p">[</span><span class="o">--</span><span class="n">tmp</span> <span class="n">TMP</span><span class="p">]</span> <span class="p">[</span><span class="o">--</span><span class="n">proxy</span> <span class="n">PROXY</span><span class="p">]</span>
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<span class="n">BLUEPRINTS</span>
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</pre></div>
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</div>
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<div class="section" id="Positional Arguments">
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<h3>Positional Arguments<a class="headerlink" href="#Positional Arguments" title="Permalink to this headline">¶</a></h3>
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<table class="docutils option-list" frame="void" rules="none">
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<col class="option" />
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<col class="description" />
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<tbody valign="top">
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<tr><td class="option-group">
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<kbd>BLUEPRINTS</kbd></td>
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<td>Path to the blueprints</td></tr>
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</tbody>
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</table>
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</div>
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<div class="section" id="Named Arguments">
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<h3>Named Arguments<a class="headerlink" href="#Named Arguments" title="Permalink to this headline">¶</a></h3>
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<table class="docutils option-list" frame="void" rules="none">
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<col class="option" />
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<col class="description" />
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<tbody valign="top">
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|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>--socket</kbd></td>
|
|||
|
|
<td><p class="first">Path to the socket file to listen on</p>
|
|||
|
|
<p class="last">Default: “/run/weldr/api.socket”</p>
|
|||
|
|
</td></tr>
|
|||
|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>--user</kbd></td>
|
|||
|
|
<td><p class="first">User to use for reduced permissions</p>
|
|||
|
|
<p class="last">Default: “weldr”</p>
|
|||
|
|
</td></tr>
|
|||
|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>--group</kbd></td>
|
|||
|
|
<td><p class="first">Group to set ownership of the socket to</p>
|
|||
|
|
<p class="last">Default: “weldr”</p>
|
|||
|
|
</td></tr>
|
|||
|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>--log</kbd></td>
|
|||
|
|
<td><p class="first">Path to logfile (/var/log/lorax-composer/composer.log)</p>
|
|||
|
|
<p class="last">Default: “/var/log/lorax-composer/composer.log”</p>
|
|||
|
|
</td></tr>
|
|||
|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>--mockfiles</kbd></td>
|
|||
|
|
<td><p class="first">Path to JSON files used for /api/mock/ paths (/var/tmp/bdcs-mockfiles/)</p>
|
|||
|
|
<p class="last">Default: “/var/tmp/bdcs-mockfiles/”</p>
|
|||
|
|
</td></tr>
|
|||
|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>--sharedir</kbd></td>
|
|||
|
|
<td>Directory containing all the templates. Overrides config file sharedir</td></tr>
|
|||
|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>-V</kbd></td>
|
|||
|
|
<td><p class="first">show program’s version number and exit</p>
|
|||
|
|
<p class="last">Default: False</p>
|
|||
|
|
</td></tr>
|
|||
|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>-c, --config</kbd></td>
|
|||
|
|
<td><p class="first">Path to lorax-composer configuration file.</p>
|
|||
|
|
<p class="last">Default: “/etc/lorax/composer.conf”</p>
|
|||
|
|
</td></tr>
|
|||
|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>--releasever</kbd></td>
|
|||
|
|
<td>Release version to use for $releasever in dnf repository urls</td></tr>
|
|||
|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>--tmp</kbd></td>
|
|||
|
|
<td><p class="first">Top level temporary directory</p>
|
|||
|
|
<p class="last">Default: “/var/tmp”</p>
|
|||
|
|
</td></tr>
|
|||
|
|
<tr><td class="option-group">
|
|||
|
|
<kbd>--proxy</kbd></td>
|
|||
|
|
<td>Set proxy for DNF, overrides configuration file setting.</td></tr>
|
|||
|
|
</tbody>
|
|||
|
|
</table>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="how-it-works">
|
|||
|
|
<h2>How it Works<a class="headerlink" href="#how-it-works" title="Permalink to this headline">¶</a></h2>
|
|||
|
|
<p>The server runs as root, and as <code class="docutils literal notranslate"><span class="pre">weldr</span></code>. Communication with it is via a unix
|
|||
|
|
domain socket (<code class="docutils literal notranslate"><span class="pre">/run/weldr/api.socket</span></code> by default). The directory and socket
|
|||
|
|
are owned by <code class="docutils literal notranslate"><span class="pre">root:weldr</span></code> so that any user in the <code class="docutils literal notranslate"><span class="pre">weldr</span></code> group can use the API
|
|||
|
|
to control <code class="docutils literal notranslate"><span class="pre">lorax-composer</span></code>.</p>
|
|||
|
|
<p>At startup the server will check for the correct permissions and
|
|||
|
|
ownership of a pre-existing directory, or it will create a new one if it
|
|||
|
|
doesn’t exist. The socket path and group owner’s name can be changed from the
|
|||
|
|
cmdline by passing it the <code class="docutils literal notranslate"><span class="pre">--socket</span></code> and <code class="docutils literal notranslate"><span class="pre">--group</span></code> arguments.</p>
|
|||
|
|
<p>It will then drop root privileges for the API thread and run as the <code class="docutils literal notranslate"><span class="pre">weldr</span></code>
|
|||
|
|
user. The queue and compose thread still runs as root because it needs to be
|
|||
|
|
able to mount/umount files and run Anaconda.</p>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="composing-images">
|
|||
|
|
<h2>Composing Images<a class="headerlink" href="#composing-images" title="Permalink to this headline">¶</a></h2>
|
|||
|
|
<p>The <a class="reference external" href="https://github.com/weldr/welder-web/">welder-web</a> GUI project can be used to construct
|
|||
|
|
blueprints and create composes using a web browser.</p>
|
|||
|
|
<p>Or use the command line with <a class="reference external" href="composer-cli.html">composer-cli</a>.</p>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="blueprints">
|
|||
|
|
<h2>Blueprints<a class="headerlink" href="#blueprints" title="Permalink to this headline">¶</a></h2>
|
|||
|
|
<p>Blueprints are simple text files in <a class="reference external" href="https://github.com/toml-lang/toml">TOML</a> format that describe
|
|||
|
|
which packages, and what versions, to install into the image. They can also define a limited set
|
|||
|
|
of customizations to make to the final image.</p>
|
|||
|
|
<p>Example blueprints can be found in the <code class="docutils literal notranslate"><span class="pre">lorax-composer</span></code> <a class="reference external" href="https://github.com/weldr/lorax/tree/master/tests/pylorax/blueprints/">test suite</a>, with a simple one
|
|||
|
|
looking like this:</p>
|
|||
|
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">name</span> <span class="o">=</span> <span class="s2">"base"</span>
|
|||
|
|
<span class="n">description</span> <span class="o">=</span> <span class="s2">"A base system with bash"</span>
|
|||
|
|
<span class="n">version</span> <span class="o">=</span> <span class="s2">"0.0.1"</span>
|
|||
|
|
|
|||
|
|
<span class="p">[[</span><span class="n">packages</span><span class="p">]]</span>
|
|||
|
|
<span class="n">name</span> <span class="o">=</span> <span class="s2">"bash"</span>
|
|||
|
|
<span class="n">version</span> <span class="o">=</span> <span class="s2">"4.4.*"</span>
|
|||
|
|
</pre></div>
|
|||
|
|
</div>
|
|||
|
|
<p>The <code class="docutils literal notranslate"><span class="pre">name</span></code> field is the name of the blueprint. It can contain spaces, but they will be converted to <code class="docutils literal notranslate"><span class="pre">-</span></code>
|
|||
|
|
when it is written to disk. It should be short and descriptive.</p>
|
|||
|
|
<p><code class="docutils literal notranslate"><span class="pre">description</span></code> can be a longer description of the blueprint, it is only used for display purposes.</p>
|
|||
|
|
<p><code class="docutils literal notranslate"><span class="pre">version</span></code> is a <a class="reference external" href="https://semver.org/">semver compatible</a> version number. If
|
|||
|
|
a new blueprint is uploaded with the same <code class="docutils literal notranslate"><span class="pre">version</span></code> the server will
|
|||
|
|
automatically bump the PATCH level of the <code class="docutils literal notranslate"><span class="pre">version</span></code>. If the <code class="docutils literal notranslate"><span class="pre">version</span></code>
|
|||
|
|
doesn’t match it will be used as is. eg. Uploading a blueprint with <code class="docutils literal notranslate"><span class="pre">version</span></code> set to <code class="docutils literal notranslate"><span class="pre">0.0.1</span></code> when the existing blueprint <code class="docutils literal notranslate"><span class="pre">version</span></code> is <code class="docutils literal notranslate"><span class="pre">0.0.1</span></code> will result in the new blueprint being stored as <code class="docutils literal notranslate"><span class="pre">version</span> <span class="pre">0.0.1</span></code>.</p>
|
|||
|
|
<div class="section" id="packages-and-modules">
|
|||
|
|
<h3>[[packages]] and [[modules]]<a class="headerlink" href="#packages-and-modules" title="Permalink to this headline">¶</a></h3>
|
|||
|
|
<p>These entries describe the package names and matching version glob to be installed into the image.</p>
|
|||
|
|
<p>The names must match the names exactly, and the versions can be an exact match
|
|||
|
|
or a filesystem-like glob of the version using <code class="docutils literal notranslate"><span class="pre">*</span></code> wildcards and <code class="docutils literal notranslate"><span class="pre">?</span></code>
|
|||
|
|
character matching.</p>
|
|||
|
|
<p>NOTE: As of lorax-composer-29.2-1 the versions are not used for depsolving,
|
|||
|
|
that is planned for a future release. And currently there are no differences
|
|||
|
|
between <code class="docutils literal notranslate"><span class="pre">packages</span></code> and <code class="docutils literal notranslate"><span class="pre">modules</span></code> in <code class="docutils literal notranslate"><span class="pre">lorax-composer</span></code>.</p>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="customizations">
|
|||
|
|
<h3>Customizations<a class="headerlink" href="#customizations" title="Permalink to this headline">¶</a></h3>
|
|||
|
|
<p>The <code class="docutils literal notranslate"><span class="pre">[[customizations]]</span></code> section can be used to configure the hostname of the final image. eg.:</p>
|
|||
|
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[[</span><span class="n">customizations</span><span class="p">]]</span>
|
|||
|
|
<span class="n">hostname</span> <span class="o">=</span> <span class="s2">"baseimage"</span>
|
|||
|
|
</pre></div>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="customizations-sshkey">
|
|||
|
|
<h4>[[customizations.sshkey]]<a class="headerlink" href="#customizations-sshkey" title="Permalink to this headline">¶</a></h4>
|
|||
|
|
<p>Set an existing user’s ssh key in the final image:</p>
|
|||
|
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[[</span><span class="n">customizations</span><span class="o">.</span><span class="n">sshkey</span><span class="p">]]</span>
|
|||
|
|
<span class="n">user</span> <span class="o">=</span> <span class="s2">"root"</span>
|
|||
|
|
<span class="n">key</span> <span class="o">=</span> <span class="s2">"PUBLIC SSH KEY"</span>
|
|||
|
|
</pre></div>
|
|||
|
|
</div>
|
|||
|
|
<p>The key will be added to the user’s authorized_keys file.</p>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="customizations-user">
|
|||
|
|
<h4>[[customizations.user]]<a class="headerlink" href="#customizations-user" title="Permalink to this headline">¶</a></h4>
|
|||
|
|
<p>Add a user to the image, and/or set their ssh key.
|
|||
|
|
All fields for this section are optional except for the <code class="docutils literal notranslate"><span class="pre">name</span></code>, here is a complete example:</p>
|
|||
|
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[[</span><span class="n">customizations</span><span class="o">.</span><span class="n">user</span><span class="p">]]</span>
|
|||
|
|
<span class="n">name</span> <span class="o">=</span> <span class="s2">"admin"</span>
|
|||
|
|
<span class="n">description</span> <span class="o">=</span> <span class="s2">"Administrator account"</span>
|
|||
|
|
<span class="n">password</span> <span class="o">=</span> <span class="s2">"$6$CHO2$3rN8eviE2t50lmVyBYihTgVRHcaecmeCk31L..."</span>
|
|||
|
|
<span class="n">key</span> <span class="o">=</span> <span class="s2">"PUBLIC SSH KEY"</span>
|
|||
|
|
<span class="n">home</span> <span class="o">=</span> <span class="s2">"/srv/widget/"</span>
|
|||
|
|
<span class="n">shell</span> <span class="o">=</span> <span class="s2">"/usr/bin/bash"</span>
|
|||
|
|
<span class="n">groups</span> <span class="o">=</span> <span class="p">[</span><span class="s2">"widget"</span><span class="p">,</span> <span class="s2">"users"</span><span class="p">,</span> <span class="s2">"wheel"</span><span class="p">]</span>
|
|||
|
|
<span class="n">uid</span> <span class="o">=</span> <span class="mi">1200</span>
|
|||
|
|
<span class="n">gid</span> <span class="o">=</span> <span class="mi">1200</span>
|
|||
|
|
</pre></div>
|
|||
|
|
</div>
|
|||
|
|
<p>If the password starts with <code class="docutils literal notranslate"><span class="pre">$6$</span></code>, <code class="docutils literal notranslate"><span class="pre">$5$</span></code>, or <code class="docutils literal notranslate"><span class="pre">$2b$</span></code> it will be stored as
|
|||
|
|
an encrypted password. Otherwise it will be treated as a plain text password.</p>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="customizations-group">
|
|||
|
|
<h4>[[customizations.group]]<a class="headerlink" href="#customizations-group" title="Permalink to this headline">¶</a></h4>
|
|||
|
|
<p>Add a group to the image. <code class="docutils literal notranslate"><span class="pre">name</span></code> is required and <code class="docutils literal notranslate"><span class="pre">gid</span></code> is optional:</p>
|
|||
|
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[[</span><span class="n">customizations</span><span class="o">.</span><span class="n">group</span><span class="p">]]</span>
|
|||
|
|
<span class="n">name</span> <span class="o">=</span> <span class="s2">"widget"</span>
|
|||
|
|
<span class="n">gid</span> <span class="o">=</span> <span class="mi">1130</span>
|
|||
|
|
</pre></div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="section" id="adding-output-types">
|
|||
|
|
<h2>Adding Output Types<a class="headerlink" href="#adding-output-types" title="Permalink to this headline">¶</a></h2>
|
|||
|
|
<p><code class="docutils literal notranslate"><span class="pre">livemedia-creator</span></code> supports a large number of output types, and only some of
|
|||
|
|
these are currently available via <code class="docutils literal notranslate"><span class="pre">lorax-composer</span></code>. To add a new output type to
|
|||
|
|
lorax-composer a kickstart file needs to be added to <code class="docutils literal notranslate"><span class="pre">./share/composer/</span></code>. The
|
|||
|
|
name of the kickstart is what will be used by the <code class="docutils literal notranslate"><span class="pre">/compose/types</span></code> route, and the
|
|||
|
|
<code class="docutils literal notranslate"><span class="pre">compose_type</span></code> field of the POST to start a compose. It also needs to have
|
|||
|
|
code added to the <a class="reference internal" href="pylorax.api.html#pylorax.api.compose.compose_args" title="pylorax.api.compose.compose_args"><code class="xref py py-func docutils literal notranslate"><span class="pre">pylorax.api.compose.compose_args()</span></code></a> function. The
|
|||
|
|
<code class="docutils literal notranslate"><span class="pre">_MAP</span></code> entry in this function defines what lorax-composer will pass to
|
|||
|
|
<a class="reference internal" href="pylorax.html#pylorax.installer.novirt_install" title="pylorax.installer.novirt_install"><code class="xref py py-func docutils literal notranslate"><span class="pre">pylorax.installer.novirt_install()</span></code></a> when it runs the compose. When the
|
|||
|
|
compose is finished the output files need to be copied out of the build
|
|||
|
|
directory (<code class="docutils literal notranslate"><span class="pre">/var/lib/lorax/composer/results/<UUID>/compose/</span></code>),
|
|||
|
|
<a class="reference internal" href="pylorax.api.html#pylorax.api.compose.move_compose_results" title="pylorax.api.compose.move_compose_results"><code class="xref py py-func docutils literal notranslate"><span class="pre">pylorax.api.compose.move_compose_results()</span></code></a> handles this for each type.
|
|||
|
|
You should move them instead of copying to save space.</p>
|
|||
|
|
<p>If the new output type does not have support in livemedia-creator it should be
|
|||
|
|
added there first. This will make the output available to the widest number of
|
|||
|
|
users.</p>
|
|||
|
|
<div class="section" id="example-add-partitioned-disk-support">
|
|||
|
|
<h3>Example: Add partitioned disk support<a class="headerlink" href="#example-add-partitioned-disk-support" title="Permalink to this headline">¶</a></h3>
|
|||
|
|
<p>Partitioned disk support is something that livemedia-creator already supports
|
|||
|
|
via the <code class="docutils literal notranslate"><span class="pre">--make-disk</span></code> cmdline argument. To add this to lorax-composer it
|
|||
|
|
needs 3 things:</p>
|
|||
|
|
<ul class="simple">
|
|||
|
|
<li>A <code class="docutils literal notranslate"><span class="pre">partitioned-disk.ks</span></code> file in <code class="docutils literal notranslate"><span class="pre">./share/composer/</span></code></li>
|
|||
|
|
<li>A new entry in the _MAP in <a class="reference internal" href="pylorax.api.html#pylorax.api.compose.compose_args" title="pylorax.api.compose.compose_args"><code class="xref py py-func docutils literal notranslate"><span class="pre">pylorax.api.compose.compose_args()</span></code></a></li>
|
|||
|
|
<li>Add a bit of code to <a class="reference internal" href="pylorax.api.html#pylorax.api.compose.move_compose_results" title="pylorax.api.compose.move_compose_results"><code class="xref py py-func docutils literal notranslate"><span class="pre">pylorax.api.compose.move_compose_results()</span></code></a> to move the disk image from
|
|||
|
|
the compose directory to the results directory.</li>
|
|||
|
|
</ul>
|
|||
|
|
<p>The <code class="docutils literal notranslate"><span class="pre">partitioned-disk.ks</span></code> is pretty similar to the example minimal kickstart
|
|||
|
|
in <code class="docutils literal notranslate"><span class="pre">./docs/fedora-minimal.ks</span></code>. You should remove the <code class="docutils literal notranslate"><span class="pre">url</span></code> and <code class="docutils literal notranslate"><span class="pre">repo</span></code>
|
|||
|
|
commands, they will be added by the compose process. Make sure the bootloader
|
|||
|
|
packages are included in the <code class="docutils literal notranslate"><span class="pre">%packages</span></code> section at the end of the kickstart,
|
|||
|
|
and you will want to leave off the <code class="docutils literal notranslate"><span class="pre">%end</span></code> so that the compose can append the
|
|||
|
|
list of packages from the blueprint.</p>
|
|||
|
|
<p>The new <code class="docutils literal notranslate"><span class="pre">_MAP</span></code> entry should be a copy of one of the existing entries, but with <code class="docutils literal notranslate"><span class="pre">make_disk</span></code> set
|
|||
|
|
to <code class="docutils literal notranslate"><span class="pre">True</span></code>. Make sure that none of the other <code class="docutils literal notranslate"><span class="pre">make_*</span></code> options are <code class="docutils literal notranslate"><span class="pre">True</span></code>. The <code class="docutils literal notranslate"><span class="pre">image_name</span></code> is
|
|||
|
|
what the name of the final image will be.</p>
|
|||
|
|
<p><code class="docutils literal notranslate"><span class="pre">move_compose_results()</span></code> can be as simple as moving the output file into
|
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the results directory, or it could do some post-processing on it. The end of
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the function should always clean up the <code class="docutils literal notranslate"><span class="pre">./compose/</span></code> directory, removing any
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unneeded extra files. This is especially true for the <code class="docutils literal notranslate"><span class="pre">live-iso</span></code> since it produces
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