Hi, I need to secure an access to HDFS (it comes with a REST API full access in a standalone webserver). The documentation on Hadoop is mainly providing security hint through Kerberos (kinit utility) using a Kerb Ticket-Granting-Ticket. Once the init is done, it is mapping a Kerberos Princip to an HDFS username. Can Keycloak take charge of this authentication part? Is there an example I can try? Still I did not make my way on understanding the current flow for this. Let say that I have App1 being J2EE app, secured with KeyCloak and as well as authenticating the user for this client, I would like at the same time, authenticate him to the HDFS (as a keycloak client in same realm or something else). What would be a good start through the example for this? Does anyone has a possible proposal and already make such things, probably trivial. -- Regards, Johan Bos