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<div class="section" id="knife-node">
<h1>knife node<a class="headerlink" href="#knife-node" title="Permalink to this headline">¶</a></h1>
<p>A node is any physical, virtual, or cloud machine that is configured to be maintained by a chef-client.</p>
<p>The <strong>knife node</strong> subcommand is used to manage the nodes that exist on a Chef server.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">Review the list of <a class="reference internal" href="knife_common_options.html"><em>common options</em></a> available to this (and all) knife subcommands and plugins.</p>
</div>
<div class="section" id="bulk-delete">
<h2>bulk delete<a class="headerlink" href="#bulk-delete" title="Permalink to this headline">¶</a></h2>
<p>The <tt class="docutils literal"><span class="pre">bulk</span> <span class="pre">delete</span></tt> argument is used to delete one or more nodes that match a pattern defined by a regular expression. The regular expression must be within quotes and not be surrounded by forward slashes (/).</p>
<div class="section" id="syntax">
<h3>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following syntax:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node bulk delete REGEX
</pre></div>
</div>
</div>
<div class="section" id="options">
<h3>Options<a class="headerlink" href="#options" title="Permalink to this headline">¶</a></h3>
<p>This command does not have any specific options.</p>
</div>
<div class="section" id="examples">
<h3>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h3>
<p>The following examples show how to use this knife subcommand:</p>
<p><strong>Bulk delete nodes</strong></p>
<p>Use a regular expression to define the pattern used to bulk delete nodes:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node bulk delete <span class="s2">"^[0-9]{3}$"</span>
</pre></div>
</div>
<p>Type <tt class="docutils literal"><span class="pre">Y</span></tt> to confirm a deletion.</p>
</div>
</div>
<div class="section" id="create">
<h2>create<a class="headerlink" href="#create" title="Permalink to this headline">¶</a></h2>
<p>The <tt class="docutils literal"><span class="pre">create</span></tt> argument is used to add a node to the Chef server. Node data is stored as JSON on the Chef server.</p>
<div class="section" id="id1">
<h3>Syntax<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following syntax:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node create NODE_NAME
</pre></div>
</div>
</div>
<div class="section" id="id2">
<h3>Options<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h3>
<p>This command does not have any specific options.</p>
</div>
<div class="section" id="id3">
<h3>Examples<a class="headerlink" href="#id3" title="Permalink to this headline">¶</a></h3>
<p>The following examples show how to use this knife subcommand:</p>
<p><strong>Create a node</strong></p>
<p>To add a node, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node create node1
</pre></div>
</div>
<p>In the $EDITOR enter the node data in JSON:</p>
<div class="highlight-javascript"><div class="highlight"><pre>## sample:
{
"normal": {
},
"name": "foobar",
"override": {
},
"default": {
},
"json_class": "Chef::Node",
"automatic": {
},
"run_list": [
"recipe[zsh]",
"role[webserver]"
],
"chef_type": "node"
}
</pre></div>
</div>
<p>When finished, save it.</p>
</div>
</div>
<div class="section" id="delete">
<h2>delete<a class="headerlink" href="#delete" title="Permalink to this headline">¶</a></h2>
<p>The <tt class="docutils literal"><span class="pre">delete</span></tt> argument is used to delete a node from the Chef server.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">Deleting a node will not delete any corresponding API clients.</p>
</div>
<div class="section" id="id4">
<h3>Syntax<a class="headerlink" href="#id4" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following syntax:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node delete NODE_NAME
</pre></div>
</div>
</div>
<div class="section" id="id5">
<h3>Options<a class="headerlink" href="#id5" title="Permalink to this headline">¶</a></h3>
<p>This command does not have any specific options.</p>
</div>
<div class="section" id="id6">
<h3>Examples<a class="headerlink" href="#id6" title="Permalink to this headline">¶</a></h3>
<p>The following examples show how to use this knife subcommand:</p>
<p><strong>Delete a node</strong></p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node delete node_name
</pre></div>
</div>
</div>
</div>
<div class="section" id="edit">
<h2>edit<a class="headerlink" href="#edit" title="Permalink to this headline">¶</a></h2>
<p>The <tt class="docutils literal"><span class="pre">edit</span></tt> argument is used to edit the details of a node on a Chef server. Node data is stored as JSON on the Chef server.</p>
<div class="section" id="id7">
<h3>Syntax<a class="headerlink" href="#id7" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following syntax:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node edit NODE_NAME <span class="o">(</span>options<span class="o">)</span>
</pre></div>
</div>
</div>
<div class="section" id="id8">
<h3>Options<a class="headerlink" href="#id8" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following options:</p>
<dl class="docutils">
<dt><tt class="docutils literal"><span class="pre">-a</span></tt>, <tt class="docutils literal"><span class="pre">--all</span></tt></dt>
<dd>Displays a node in the $EDITOR. By default, attributes that are default, override, or automatic are not shown.</dd>
</dl>
</div>
<div class="section" id="id9">
<h3>Examples<a class="headerlink" href="#id9" title="Permalink to this headline">¶</a></h3>
<p>The following examples show how to use this knife subcommand:</p>
<p><strong>Edit a node</strong></p>
<p>To edit the data for a node named <tt class="docutils literal"><span class="pre">node1</span></tt>, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node edit node1 -a
</pre></div>
</div>
<p>Update the role data in JSON:</p>
<div class="highlight-javascript"><div class="highlight"><pre>## sample:
{
"normal": {
},
"name": "node1",
"override": {
},
"default": {
},
"json_class": "Chef::Node",
"automatic": {
},
"run_list": [
"recipe[devops]",
"role[webserver]"
],
"chef_type": "node"
}
</pre></div>
</div>
<p>When finished, save it.</p>
</div>
</div>
<div class="section" id="from-file">
<h2>from file<a class="headerlink" href="#from-file" title="Permalink to this headline">¶</a></h2>
<p>The <tt class="docutils literal"><span class="pre">from</span> <span class="pre">file</span></tt> argument is used to create a node using existing node data as a template.</p>
<div class="section" id="id10">
<h3>Syntax<a class="headerlink" href="#id10" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following syntax:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node from file FILE
</pre></div>
</div>
</div>
<div class="section" id="id11">
<h3>Options<a class="headerlink" href="#id11" title="Permalink to this headline">¶</a></h3>
<p>This command does not have any specific options.</p>
</div>
<div class="section" id="id12">
<h3>Examples<a class="headerlink" href="#id12" title="Permalink to this headline">¶</a></h3>
<p>The following examples show how to use this knife subcommand:</p>
<p><strong>Create a node using a JSON file</strong></p>
<p>To add a node using data contained in a JSON file:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node from file <span class="s2">"path to JSON file"</span>
</pre></div>
</div>
</div>
</div>
<div class="section" id="list">
<h2>list<a class="headerlink" href="#list" title="Permalink to this headline">¶</a></h2>
<p>The <tt class="docutils literal"><span class="pre">list</span></tt> argument is used to view all of the nodes that exist on a Chef server.</p>
<div class="section" id="id13">
<h3>Syntax<a class="headerlink" href="#id13" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following syntax:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node list <span class="o">(</span>options<span class="o">)</span>
</pre></div>
</div>
</div>
<div class="section" id="id14">
<h3>Options<a class="headerlink" href="#id14" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following options:</p>
<dl class="docutils">
<dt><tt class="docutils literal"><span class="pre">-w</span></tt>, <tt class="docutils literal"><span class="pre">--with-uri</span></tt></dt>
<dd>Use to show the corresponding URIs.</dd>
</dl>
</div>
<div class="section" id="id15">
<h3>Examples<a class="headerlink" href="#id15" title="Permalink to this headline">¶</a></h3>
<p>The following examples show how to use this knife subcommand:</p>
<p><strong>View a list of nodes</strong></p>
<p>To verify the list of nodes that are registered with the Chef server, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node list
</pre></div>
</div>
<p>to return something similar to:</p>
<div class="highlight-bash"><div class="highlight"><pre>i-12345678
rs-123456
</pre></div>
</div>
</div>
</div>
<div class="section" id="run-list-add">
<h2>run_list add<a class="headerlink" href="#run-list-add" title="Permalink to this headline">¶</a></h2>
<p>A run-list defines all of the configuration settings that are necessary for a node that is under management by Chef to be put into the desired state. A run-list is:</p>
<ul class="simple">
<li>An ordered list of roles and/or recipes that are run in an exact order; if a recipe appears more than once in the run-list, the chef-client will never run that recipe twice</li>
<li>Always specific to the node on which it runs, though it is possible for many nodes to have run-lists that are similar or even identical</li>
<li>Stored as part of the node object on the Chef server</li>
<li>Maintained using knife and uploaded to the Chef server or via the Chef management console user interface</li>
</ul>
<p>The <tt class="docutils literal"><span class="pre">run_list</span> <span class="pre">add</span></tt> argument is used to add run-list items (roles or recipes) to a node.</p>
<p>A run-list must be in one of the following formats: fully qualified, cookbook, or default. Both roles and recipes must be in quotes, for example:</p>
<div class="highlight-ruby"><div class="highlight"><pre><span class="s1">'role[ROLE_NAME]'</span>
</pre></div>
</div>
<p>or</p>
<div class="highlight-ruby"><div class="highlight"><pre><span class="s1">'recipe[COOKBOOK::RECIPE_NAME]'</span>
</pre></div>
</div>
<p>Use a comma to separate roles and recipes when adding more than one item the run-list:</p>
<div class="highlight-ruby"><div class="highlight"><pre><span class="s1">'recipe[COOKBOOK::RECIPE_NAME],COOKBOOK::RECIPE_NAME,role[ROLE_NAME]'</span>
</pre></div>
</div>
<div class="section" id="id16">
<h3>Syntax<a class="headerlink" href="#id16" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following syntax:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node run_list add NODE_NAME RUN_LIST_ITEM <span class="o">(</span>options<span class="o">)</span>
</pre></div>
</div>
</div>
<div class="section" id="id17">
<h3>Options<a class="headerlink" href="#id17" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following options:</p>
<dl class="docutils">
<dt><tt class="docutils literal"><span class="pre">-a</span> <span class="pre">ITEM</span></tt>, <tt class="docutils literal"><span class="pre">--after</span> <span class="pre">ITEM</span></tt></dt>
<dd>Use this to add the run list item after the specified run list item.</dd>
<dt><tt class="docutils literal"><span class="pre">-b</span> <span class="pre">ITEM</span></tt>, <tt class="docutils literal"><span class="pre">--before</span> <span class="pre">ITEM</span></tt></dt>
<dd>Use this to add the run list item before the specified run list item.</dd>
</dl>
</div>
<div class="section" id="id18">
<h3>Examples<a class="headerlink" href="#id18" title="Permalink to this headline">¶</a></h3>
<p>The following examples show how to use this knife subcommand:</p>
<p><strong>Add a role</strong></p>
<p>To add a role to a run-list, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node run_list add node <span class="s1">'role[ROLE_NAME]'</span>
</pre></div>
</div>
<p><strong>Add roles and recipes</strong></p>
<p>To add roles and recipes to a run-list, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node run_list add node <span class="s1">'recipe[COOKBOOK::RECIPE_NAME],recipe[COOKBOOK::RECIPE_NAME],role[ROLE_NAME]'</span>
</pre></div>
</div>
<p><strong>Add a recipe with a FQDN</strong></p>
<p>To add a recipe to a run-list using the fully qualified format, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node run_list add node <span class="s1">'recipe[COOKBOOK::RECIPE_NAME]'</span>
</pre></div>
</div>
<p><strong>Add a recipe with a cookbook</strong></p>
<p>To add a recipe to a run-list using the cookbook format, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node run_list add node <span class="s1">'COOKBOOK::RECIPE_NAME'</span>
</pre></div>
</div>
<p><strong>Add the default recipe</strong></p>
<p>To add the default recipe of a cookbook to a run-list, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node run_list add node <span class="s1">'COOKBOOK'</span>
</pre></div>
</div>
</div>
</div>
<div class="section" id="run-list-remove">
<h2>run_list remove<a class="headerlink" href="#run-list-remove" title="Permalink to this headline">¶</a></h2>
<p>The <tt class="docutils literal"><span class="pre">run_list</span> <span class="pre">remove</span></tt> argument is used to remove run-list items (roles or recipes) from a node. A recipe must be in one of the following formats: fully qualified, cookbook, or default. Both roles and recipes must be in quotes, for example: <tt class="docutils literal"><span class="pre">'role[ROLE_NAME]'</span></tt> or <tt class="docutils literal"><span class="pre">'recipe[COOKBOOK::RECIPE_NAME]'</span></tt>. Use a comma to separate roles and recipes when removing more than one, like this: <tt class="docutils literal"><span class="pre">'recipe[COOKBOOK::RECIPE_NAME],COOKBOOK::RECIPE_NAME,role[ROLE_NAME]'</span></tt>.</p>
<div class="section" id="id19">
<h3>Syntax<a class="headerlink" href="#id19" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following syntax:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node run_list remove NODE_NAME RUN_LIST_ITEM
</pre></div>
</div>
</div>
<div class="section" id="id20">
<h3>Options<a class="headerlink" href="#id20" title="Permalink to this headline">¶</a></h3>
<p>This command does not have any specific options.</p>
</div>
<div class="section" id="id21">
<h3>Examples<a class="headerlink" href="#id21" title="Permalink to this headline">¶</a></h3>
<p>The following examples show how to use this knife subcommand:</p>
<p><strong>Remove a role</strong></p>
<p>To remove a role from a run-list, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node run_list remove node <span class="s1">'role[ROLE_NAME]'</span>
</pre></div>
</div>
<p><strong>Remove a run-list</strong></p>
<p>To remove a recipe from a run-list using the fully qualified format, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node run_list remove node <span class="s1">'recipe[COOKBOOK::RECIPE_NAME]'</span>
</pre></div>
</div>
</div>
</div>
<div class="section" id="show">
<h2>show<a class="headerlink" href="#show" title="Permalink to this headline">¶</a></h2>
<p>The <tt class="docutils literal"><span class="pre">show</span></tt> argument is used to display information about a node.</p>
<div class="section" id="id22">
<h3>Syntax<a class="headerlink" href="#id22" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following syntax:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node show NODE_NAME <span class="o">(</span>options<span class="o">)</span>
</pre></div>
</div>
</div>
<div class="section" id="id23">
<h3>Options<a class="headerlink" href="#id23" title="Permalink to this headline">¶</a></h3>
<p>This argument has the following options:</p>
<dl class="docutils">
<dt><tt class="docutils literal"><span class="pre">-a</span> <span class="pre">ATTR</span></tt>, <tt class="docutils literal"><span class="pre">--attribute</span> <span class="pre">ATTR</span></tt></dt>
<dd>The attribute (or attributes) to show.</dd>
<dt><tt class="docutils literal"><span class="pre">-l</span></tt>, <tt class="docutils literal"><span class="pre">--long</span></tt></dt>
<dd>Use to display all attributes in the output and to show the output as JSON.</dd>
<dt><tt class="docutils literal"><span class="pre">-m</span></tt>, <tt class="docutils literal"><span class="pre">--medium</span></tt></dt>
<dd>Use to display normal attributes in the output and to show the output as JSON.</dd>
<dt><tt class="docutils literal"><span class="pre">-r</span></tt>, <tt class="docutils literal"><span class="pre">--run-list</span></tt></dt>
<dd>Use to show only the run-list.</dd>
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<div class="section" id="id24">
<h3>Examples<a class="headerlink" href="#id24" title="Permalink to this headline">¶</a></h3>
<p>The following examples show how to use this knife subcommand:</p>
<p><strong>Show all data about nodes</strong></p>
<p>To view all data for a node named <tt class="docutils literal"><span class="pre">build</span></tt>, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node show build
</pre></div>
</div>
<p>to return:</p>
<div class="highlight-bash"><div class="highlight"><pre>Node Name: build
Environment: _default
FQDN:
IP:
Run List:
Roles:
Recipes:
Platform:
</pre></div>
</div>
<p><strong>Show basic information about nodes</strong></p>
<p>To show basic information about a node, truncated and nicely formatted:</p>
<div class="highlight-bash"><div class="highlight"><pre>knife node show <node_name>
</pre></div>
</div>
<p><strong>Show all data about nodes, truncated</strong></p>
<p>To show all information about a node, nicely formatted:</p>
<div class="highlight-bash"><div class="highlight"><pre>knife node show -l <node_name>
</pre></div>
</div>
<p><strong>Show attributes</strong></p>
<p>To list a single node attribute:</p>
<div class="highlight-bash"><div class="highlight"><pre>knife node show <node_name> -a <attribute_name>
</pre></div>
</div>
<p>where <tt class="docutils literal"><span class="pre"><attribute_name></span></tt> is something like kernel or platform. (This doesn’t work for nested attributes like <tt class="docutils literal"><span class="pre">node[kernel][machine]</span></tt> because <tt class="docutils literal"><span class="pre">knife</span> <span class="pre">node</span> <span class="pre">show</span></tt> doesn’t understand nested attributes.)</p>
<p><strong>Show the FQDN</strong></p>
<p>To view the FQDN for a node named <tt class="docutils literal"><span class="pre">i-12345678</span></tt>, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node show i-12345678 -a fqdn
</pre></div>
</div>
<p>to return:</p>
<div class="highlight-bash"><div class="highlight"><pre>fqdn: ip-10-251-75-20.ec2.internal
</pre></div>
</div>
<p><strong>Show a run-list</strong></p>
<p>To view the run list for a node named <tt class="docutils literal"><span class="pre">dev</span></tt>, enter:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife node show dev -r
</pre></div>
</div>
<p><strong>Show as JSON data</strong></p>
<p>To view information in JSON format, use the <tt class="docutils literal"><span class="pre">-F</span></tt> common option as part of the command like this:</p>
<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>knife role show devops -F json
</pre></div>
</div>
<p>Other formats available include <tt class="docutils literal"><span class="pre">text</span></tt>, <tt class="docutils literal"><span class="pre">yaml</span></tt>, and <tt class="docutils literal"><span class="pre">pp</span></tt>.</p>
<p><strong>Show as raw JSON data</strong></p>
<p>To view node information in raw JSON, use the <tt class="docutils literal"><span class="pre">-l</span></tt> or <tt class="docutils literal"><span class="pre">--long</span></tt> option:</p>
<div class="highlight-bash"><div class="highlight"><pre>knife node show -l -F json <node_name>
</pre></div>
</div>
<p>and/or:</p>
<div class="highlight-bash"><div class="highlight"><pre>knife node show -l --format<span class="o">=</span>json <node_name>
</pre></div>
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