User data - Elastic Compute Service
You can use user data of an ECS instance to customize its startup behavior and to pass data into the instance. You can specify user data when creating an instance (RunInstances) and customize startup behavior such as automatically update ...
User management - E-HPC
in the Actions column.
Note: Although the /home directory under the deleted user name is not cleared, data in the $HOME directory is not reused even if you create a user with the same name. However, other users can still access the data. ...