"1.3. Deploying Key Manager" section of "Managing secrets with the Key Manager service" guide tells to run deployment command with /home/stack/container-parameters-with-barbican.yaml environment file, but this file is not mentioned anywhere else. So it may cause some confusion.

https://docs.redhat.com/en/documentation/red_hat_openstack_platform/17.1/html/managing_secrets_with_the_key_manager_service/assembly-deploying-configuring-key-manager_rhosp#proc-deploying-key-manager_key-manager-deploy