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<span class="man-whatis">Interactive Chef Console</span> +</p> + +<h2 id="SYNOPSIS">SYNOPSIS</h2> + +<p><strong>chef-shell</strong> [<em>named configuration</em>] <em>(options)</em></p> + +<dl> +<dt><code>-S</code>, <code>--server CHEF_SERVER_URL</code></dt><dd>The chef server URL</dd> +<dt><code>-z</code>, <code>--client</code></dt><dd>chef-client mode</dd> +<dt><code>-c</code>, <code>--config CONFIG</code></dt><dd>The configuration file to use</dd> +<dt><code>-j</code>, <code>--json-attributes JSON_ATTRIBS</code></dt><dd>Load attributes from a JSON file or URL</dd> +<dt><code>-l</code>, <code>--log-level LOG_LEVEL</code></dt><dd>Set the logging level</dd> +<dt><code>-s</code>, <code>--solo</code></dt><dd>chef-solo session</dd> +<dt><code>-a</code>, <code>--standalone</code></dt><dd>standalone session</dd> +<dt><code>-v</code>, <code>--version</code></dt><dd>Show chef version</dd> +<dt><code>-h</code>, <code>--help</code></dt><dd>Show command options</dd> +</dl> + + +<p>When no --config option is specified, chef-shell attempts to load a +default configuration file:</p> + +<ul> +<li>If a <em>named configuration</em> is given, chef-shell will load ~/.chef/<em>named +configuration</em>/chef_shell.rb</li> +<li>If no <em>named configuration</em> is given chef-shell will load +~/.chef/chef_shell.rb if it exists</li> +<li>chef-shell falls back to loading /etc/chef/client.rb or +/etc/chef/solo.rb if -z or -s options are given and no chef_shell.rb +can be found.</li> +<li>The --config option takes precedence over implicit configuration +paths.</li> +</ul> + + +<h2 id="DESCRIPTION">DESCRIPTION</h2> + +<p><code>chef-shell</code> is an <span class="man-ref">irb<span class="s">(1)</span></span> (interactive ruby) session customized for Chef. +<code>chef-shell</code> serves two primary functions: it provides a means to +interact with a Chef Server interactively using a convenient DSL; it +allows you to define and run Chef recipes interactively.</p> + +<h2 id="SYNTAX">SYNTAX</h2> + +<p>chef-shell uses irb's subsession feature to provide multiple modes of +interaction. In addition to the primary mode which is entered on start, +<code>recipe</code> and <code>attributes</code> modes are available.</p> + +<h2 id="PRIMARY-MODE">PRIMARY MODE</h2> + +<p>The following commands are available in the primary +session:</p> + +<dl> +<dt class="flush"><code>help</code></dt><dd>Prints a list of available commands</dd> +<dt class="flush"><code>version</code></dt><dd>Prints the Chef version</dd> +<dt class="flush"><code>recipe</code></dt><dd>Switches to <code>recipe</code> mode</dd> +<dt><code>attributes</code></dt><dd>Switches to <code>attributes</code> mode</dd> +<dt><code>run_chef</code></dt><dd>Initiates a chef run</dd> +<dt class="flush"><code>reset</code></dt><dd>reinitializes chef-shell session</dd> +<dt><code>echo :on|:off</code></dt><dd>Turns irb's echo function on or off. Echo is <em>on</em> by default.</dd> +<dt><code>tracing :on|:off</code></dt><dd>Turns irb's function tracing feature on or off. Tracing is extremely +verbose and expected to be of interest primarily to developers.</dd> +<dt class="flush"><code>node</code></dt><dd>Returns the <em>node</em> object for the current host. See <span class="man-ref">knife-node<span class="s">(1)</span></span> +for more information about nodes.</dd> +<dt class="flush"><code>ohai</code></dt><dd>Prints the attributes of <em>node</em></dd> +</dl> + + +<p>In addition to these commands, chef-shell provides a DSL for accessing +data on the Chef Server. When working with remote data in chef-shell, you +chain method calls in the form <em>object type</em>.<em>operation</em>, where +<em>object type</em> is in plural form. The following object types are +available:</p> + +<ul> +<li><code>nodes</code></li> +<li><code>roles</code></li> +<li><code>data_bags</code></li> +<li><code>clients</code></li> +<li><code>cookbooks</code></li> +</ul> + + +<p>For each <em>object type</em> the following operations are available:</p> + +<dl> +<dt><em>object type</em>.all(<em>&block</em>)</dt><dd>Loads all items from the server. If the optional code <em>block</em> is +given, each item will be passed to the block and the results +returned, similar to ruby's <code>Enumerable#map</code> method.</dd> +<dt><em>object type</em>.show(<em>object name</em>)</dt><dd><p>Aliased as <em>object type</em>.load</p> + +<p>Loads the singular item identified by <em>object name</em>.</p></dd> +<dt><em>object type</em>.search(<em>query</em>, <em>&block</em>)</dt><dd><p>Aliased as <em>object type</em>.find</p> + +<p>Runs a search against the server and returns the matching items. If +the optional code <em>block</em> is given each item will be passed to the +block and the results returned.</p> + +<p>The <em>query</em> may be a Solr/Lucene format query given as a String, or +a Hash of conditions. If a Hash is given, the options will be ANDed +together. To join conditions with OR, use negative queries, or any +advanced search syntax, you must provide give the query in String +form.</p></dd> +<dt><em>object type</em>.transform(:all|<em>query</em>, <em>&block</em>)</dt><dd><p>Aliased as <em>object type</em>.bulk_edit</p> + +<p>Bulk edit objects by processing them with the (required) code <em>block</em>. +You can edit all objects of the given type by passing the Symbol +<code>:all</code> as the argument, or only a subset by passing a <em>query</em> as the +argument. The <em>query</em> is evaluated in the same way as with +<strong>search</strong>.</p> + +<p>The return value of the code <em>block</em> is used to alter the behavior +of <code>transform</code>. If the value returned from the block is <code>nil</code> or +<code>false</code>, the object will not be saved. Otherwise, the object is +saved after being passed to the block. This behavior can be +exploited to create a dry run to test a data transformation.</p></dd> +</dl> + + +<h2 id="RECIPE-MODE">RECIPE MODE</h2> + +<p>Recipe mode implements Chef's recipe DSL. Exhaustively documenting this +DSL is outside the scope of this document. See the following pages in +the Chef documentation for more information:</p> + +<ul> +<li><a href="http://wiki.opscode.com/display/chef/Resources" data-bare-link="true">http://wiki.opscode.com/display/chef/Resources</a></li> +<li><a href="http://wiki.opscode.com/display/chef/Recipes" data-bare-link="true">http://wiki.opscode.com/display/chef/Recipes</a></li> +</ul> + + +<p>Once you have defined resources in the recipe, you can trigger a +convergence run via <code>run_chef</code></p> + +<h2 id="EXAMPLES">EXAMPLES</h2> + +<ul> +<li><p>A "Hello World" interactive recipe</p> + +<p>chef > recipe +chef:recipe > echo :off +chef:recipe > file "/tmp/hello_world" +chef:recipe > run_chef +[Sat, 09 Apr 2011 08:56:56 -0700] INFO: Processing file[/tmp/hello_world] action create ((irb#1) line 2) +[Sat, 09 Apr 2011 08:56:56 -0700] INFO: file[/tmp/hello_world] created file /tmp/hello_world +chef:recipe > pp ls '/tmp' +[".", +"..", +"hello_world"]</p></li> +<li><p>Search for <em>nodes</em> by role, and print their IP addresses</p> + +<p>chef > nodes.find(:roles => 'monitoring-server') {|n| n[:ipaddress] } +=> ["10.254.199.5"]</p></li> +<li><p>Remove the role <em>obsolete</em> from every node in the system</p> + +<p>chef > nodes.transform(:all) {|n| n.run_list.delete('role[obsolete]') } + => [node[chef098b2.opschef.com], node[ree-woot], node[graphite-dev], node[fluke.localdomain], node[ghost.local], node[kallistec]]</p></li> +</ul> + + +<h2 id="BUGS">BUGS</h2> + +<p><code>chef-shell</code> often does not perfectly replicate the context in which +<span class="man-ref">chef-client<span class="s">(8)</span></span> configures a host, which may lead to discrepancies in +observed behavior.</p> + +<p><code>chef-shell</code> has to duplicate much code from chef-client's internal +libraries and may become out of sync with the behavior of those +libraries.</p> + +<h2 id="SEE-ALSO">SEE ALSO</h2> + +<p> <span class="man-ref">chef-client<span class="s">(8)</span></span> <span class="man-ref">knife<span class="s">(1)</span></span> + <a href="http://wiki.opscode.com/display/chef/Chef+Shell" data-bare-link="true">http://wiki.opscode.com/display/chef/Chef+Shell</a></p> + +<h2 id="AUTHOR">AUTHOR</h2> + +<p> Chef was written by Adam Jacob <a href="mailto:adam@opscode.com" data-bare-link="true">adam@opscode.com</a> with many + contributions from the community. chef-shell was written by Daniel + DeLeo.</p> + +<h2 id="DOCUMENTATION">DOCUMENTATION</h2> + +<p> This manual page was written by Daniel DeLeo <a href="mailto:dan@opscode.com" data-bare-link="true">dan@opscode.com</a>. + Permission is granted to copy, distribute and / or modify this + document under the terms of the Apache 2.0 License.</p> + +<h2 id="CHEF">CHEF</h2> + +<p> chef-shell is distributed with Chef. <a href="http://wiki.opscode.com/display/chef/Home" data-bare-link="true">http://wiki.opscode.com/display/chef/Home</a></p> + + + <ol class='man-decor man-foot man foot'> + <li class='tl'>Chef 11.0.0.alpha</li> + <li class='tc'>September 2012</li> + <li class='tr'>chef-shell(1)</li> + </ol> + + </div> +</body> +</html> |