title: Allocating an Elastic IP address to an existing / running Amazon EC2 instance
body: <p>Are we able to allocate an Elastic IP address to an existing / running Amazon EC2 instance? </p>
  
  <p>In most cases, we assign the Elastic IP address before configuring the server. However, we are trying to assign the Elastic IP address onto a fully configured server and create an AMI for different instances. </p>
  
  <p>If we associate the new EIP onto an existing instance (created by AMI) will run the same config as the existing one?</p>