title: Amazon ECS How to login to the EC2 service it is associated?
body: <p>After I initiated an Amazon ECS following <a href="http://docs.aws.amazon.com/AmazonECS/latest/developerguide/ECS_GetStarted.html" rel="nofollow noreferrer">their tutorial</a> (But I don't recall there is one step that asks me for the key-pair information.) </p>
  
  <p>After I set it up, I found that there is an extra EC2 in my EC2 instance list that starts to charge me money. I wonder what that EC2 is doing. </p>
  
  <p>Is it the EC2 that is associated with ECS that I can start to build my own server on? </p>
  
  <ul>
  <li>If so, how can I log into it? (There is no key-pair information for me to log in. It says I need to log in via valid username-password pair, but I don't even know my username.)</li>
  <li>If not, how can I kill it? (Directly terminating it in EC2 service is not helping since it seems ECS will just start another one)</li>
  </ul>