You will require the user name to login to the RHEL instance. This is applicable for software-only deployments.
Before you begin
Create RHEL instance on Amazon Web Services.
Procedure
Log on to the Amazon Web Services management console.
Click Servers > EC2.
In the right-pane, select the RHEL instance you created.
On the top of the page, click Actions > Connect.
In the page that opens, under the Example, user name of the RHEL instance appears. For example: ssh -i "<Key_Pair.pem>" abc-user@<IP address>. In this example, abc-user is the user name to login to the RHEL instance using SSH.