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copied!<p><code>notifies</code> sends a notification for another Chef resource to do something.</p> <p>In your example, it's telling the resource <code>service[nginx]</code> to <code>:reload</code>. <code>service[nginx]</code> is a <a href="https://docs.chef.io/resource_service.html" rel="nofollow noreferrer"><code>service</code> resource</a> whose <code>name</code> is <code>nginx</code>.</p> <p>For this to work, <code>service[nginx]</code> must have been declared in your node's <code>run_list</code> at some point. Otherwise, Chef will throw an error. Usually this is either done manually in a recipe by the user, or via a dependency (say, the <a href="https://supermarket.chef.io/cookbooks/application" rel="nofollow noreferrer"><code>application</code></a>, or the <a href="https://supermarket.chef.io/cookbooks/nginx" rel="nofollow noreferrer"><code>nginx</code></a> cookbooks).</p> <p>Exactly how Chef runs the <code>reload</code> command depends on how the <code>service[nginx]</code> resource was declared, but it usually depends on the underlying operating system (that's one of the beauties of using a tool such as this -- it abstracts many lower level details away from you and allows you to use the same code across multiple platforms).</p> <p>In the <strong>Syntax</strong> section of the <code>service</code> documentation you find this:</p> <ul> <li>service tells the chef-client to use one of the following providers during the chef-client run: <code>Chef::Provider::Service::Init</code>, <code>Chef::Provider::Service::Init::Debian</code>, <code>Chef::Provider::Service::Upstart</code>, <code>Chef::Provider::Service::Init::Freebsd</code>, <code>Chef::Provider::Service::Init::Gentoo</code>, <code>Chef::Provider::Service::Init::Redhat</code>, <code>Chef::Provider::Service::Solaris</code>, <code>Chef::Provider::Service::Windows</code>, or <code>Chef::Provider::Service::Macosx</code>. The chef-client will detect the platform at the start of the run based on data collected by Ohai. After the platform is identified, the chef-client will determine the correct provider</li> </ul>

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