https://www.mongodb.com/docs/upcoming/tutorial/enforce-keyfile-access-control-in-existing-sharded-cluster/
Learn how to enforce keyfile authentication in a self-managed sharded cluster for internal security and access control.
self managedupdateclusterkeyfileauthentication
https://www.mongodb.com/docs/upcoming/tutorial/deploy-replica-set-with-keyfile-access-control/
Deploy a self-managed replica set with keyfile authentication, ensuring secure internal and client access control.
deploy selfmanagedreplicasetkeyfile