title: Determine a running instance's VM class in app engine flexible
body: <p>I've got auto scaling on in my app engine flexible (PHP) app.yaml file. Is there a <code>gcloud</code> or console way to figure out the machine class of the instances that have been assigned to my service?</p>
  
  <p>I know that I can set the resources I need in terms of disk and RAM in my yaml file, but this is a <em>minimum</em>; actual allocated machines may be different. I'm looking to determine what was allocated after the machine is running.</p>