Can a WAS Profile support a federated realm that basically looks at a local and an LDAP based user management?
2 answers
You simply need to add both the local file-based registry and ldap registry to the server configuration.
If you are using Liberty see the instructions in Federation of User Registries
If you are using Full Liberty see the instructions in Configuring a single built-in, file-based repository and one or more Lightweight Directory Access Protocol repositories in a federated repository configuration
Yes it does support such configuration. You add a built-in file-based registry and an LDAP registry to the federated realm. I know some users use such configuration to hold the administrator info in the file-based registry to avoid being locked out from the LDAP. Note that with a federated realm, you need to map users/groups from each registry to the security role.