title: AWS Cloudwatch Alarm not stopping EC2 instance
body: <p>I have created an alarm in Cloudwatch to stop my EC2 instance, if the CPU &lt; 5% for more than five minutes.</p>
  
  <p><a href="https://i.stack.imgur.com/9mFzo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9mFzo.png" alt="enter image description here"></a></p>
  
  <p>And after five minutes I get the email but the instance continues running.  The instance is using an EBS volume and nothing in the history indicates a problem.</p>
  
  <p>Can someone please tell me why the alarm I setup is not stopping the instance?</p>
  
  <p>Thanks</p>