[keycloak-user] Activate only features needed using cluster

Hello, I need to design a secure infrastructure with many zones (vlan, fw filtering...). Is it possible to separate this roles :  - URI for token Delivery, authentification (openid connect, oauth)  - internal user database (or is it possible only if external ldap server is used ?)  - Admin UI  - Admin Rest API This différents servers would be in cluster (sync allowed by filtering between zones). I have understand it is possible to configure "localhost" for this services but is it possible to disable it ? and having all this roles working fine in cluster ? Thank you. Fabien.