# -------------- openstack_user_config.yml the part with storage
# ...

# cinder api services
    storage-infra_hosts: *infrastructure_hosts

    # cinder volume hosts (Ceph RBD-backed)
    storage_hosts:
      controller1:
        ip: 172.29.236.10
        container_vars:
          cinder_backends:
            limit_container_types: cinder_volume
            rbd:
              volume_group: cinder-volumes
              volume_driver: cinder.volume.drivers.rbd.RBDDriver
              volume_backend_name: rbd
              rbd_pool: cinder-volumes
              rbd_ceph_conf: /etc/ceph/ceph.conf
              rbd_user: cinder
    # glance
    image_hosts: *infrastructure_hosts
# ...

# ------------------- user_variables.yml
# part for backend storage vars
# ...
nova_libvirt_images_rbd_pool: ephemeral-vms
    nova_virt_type: kvm


    ## Ceph cluster fsid (must be generated before first run)
    ## Generate a uuid using: python -c 'import uuid; print(str(uuid.uuid4()))'
    generate_fsid: false
    # fsid: 0d4e0fe8-fe15-42a9-808f-a93071c0819a # Replace with your generated UUID

    ## ceph-ansible settings
    ## See https://github.com/ceph/ceph-ansible/tree/master/group_vars for
    ## additional configuration options available.
    monitor_address_block: "192.168.50.0/24"
    public_network: "192.168.50.0/24"
    cluster_network: "{{ cidr_networks.storage }}"
    journal_size: 10240 # size in MB
    glance_default_store: rbd
    glance_notification_driver: noop
    glance_ceph_client: glance
    glance_rbd_store_pool: glance-images
    glance_rbd_store_chunk_size: 8
    nova_libvirt_images_rbd_pool: ephemeral-vms
    cinder_ceph_client: cinder
    cephx: true
    ceph_mons:
      - 192.168.50.10
# ...