The most common way to assign an Elastic IP is when an instance is launched for the first time. When you launch a new server, you can choose to associate the Elastic IP when an instance is launched for the first time.
Assigning an EIP can only be done within a deployment, on an instance of a server within a deployment. In order to get a server within a deployment, need to add a server.
WARNING! You can steal an Elastic IP from a running instance! Be sure to check and make sure that a running instance is not using the EIP that you want to assign to a new server.
If you add a server from your deployment (by clicking the Add Server button) or from a ServerTemplate (by clicking the Add to Deployment or Launch buttons), you can select the appropriate Elastic IP. Make sure that the "Associate IP at launch" checkbox is checked.
If you are replacing an instance in a particular availability zone, be sure to specify the appropriate zone.
Click the Add button and launch the server.
